U.S. patent application number 16/177841 was filed with the patent office on 2019-03-07 for substituted 3-haloallylamine inhibitors of ssao and uses thereof.
The applicant listed for this patent is Boehringer Ingelheim International GmbH. Invention is credited to Mandar Deodhar, Alison Dorothy Findlay, Jonathan Stuart Foot, Wolfgang Jarolimek, Ian Alexander Mcdonald, Alan Duncan Robertson, Craig Ivan Turner.
Application Number | 20190071396 16/177841 |
Document ID | / |
Family ID | 49514094 |
Filed Date | 2019-03-07 |
![](/patent/app/20190071396/US20190071396A1-20190307-C00001.png)
![](/patent/app/20190071396/US20190071396A1-20190307-C00002.png)
![](/patent/app/20190071396/US20190071396A1-20190307-C00003.png)
![](/patent/app/20190071396/US20190071396A1-20190307-C00004.png)
![](/patent/app/20190071396/US20190071396A1-20190307-C00005.png)
![](/patent/app/20190071396/US20190071396A1-20190307-C00006.png)
![](/patent/app/20190071396/US20190071396A1-20190307-C00007.png)
![](/patent/app/20190071396/US20190071396A1-20190307-C00008.png)
![](/patent/app/20190071396/US20190071396A1-20190307-C00009.png)
![](/patent/app/20190071396/US20190071396A1-20190307-C00010.png)
![](/patent/app/20190071396/US20190071396A1-20190307-C00011.png)
View All Diagrams
United States Patent
Application |
20190071396 |
Kind Code |
A1 |
Deodhar; Mandar ; et
al. |
March 7, 2019 |
SUBSTITUTED 3-HALOALLYLAMINE INHIBITORS OF SSAO AND USES
THEREOF
Abstract
The present invention is related to the preparation and
pharmaceutical use of substituted 3-haloallylamine derivatives as
SSAO/VAP-1 inhibitors having the structure of Formula I, as defined
in the specification: ##STR00001## The invention also relates to
methods of using compounds of Formula I, or pharmaceutically
acceptable salt or derivatives thereof, for the treatment of a
variety of indications, e.g., inflammatory diseases, ocular
diseases, fibrotic diseases, diabetes-induced diseases and
cancer.
Inventors: |
Deodhar; Mandar; (New South
Wales, AU) ; Findlay; Alison Dorothy; (New South
Wales, AU) ; Foot; Jonathan Stuart; (New South Wales,
AU) ; Jarolimek; Wolfgang; (New South Wales, AU)
; Mcdonald; Ian Alexander; (New South Wales, AU) ;
Robertson; Alan Duncan; (New South Wales, AU) ;
Turner; Craig Ivan; (New South Wales, AU) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Boehringer Ingelheim International GmbH |
Ingelheim am Rhein |
|
DE |
|
|
Family ID: |
49514094 |
Appl. No.: |
16/177841 |
Filed: |
November 1, 2018 |
Related U.S. Patent Documents
|
|
|
|
|
|
Application
Number |
Filing Date |
Patent Number |
|
|
15725363 |
Oct 5, 2017 |
10160723 |
|
|
16177841 |
|
|
|
|
15054243 |
Feb 26, 2016 |
9815782 |
|
|
15725363 |
|
|
|
|
14397931 |
Oct 30, 2014 |
9302986 |
|
|
PCT/AU2013/000356 |
Apr 5, 2013 |
|
|
|
15054243 |
|
|
|
|
61641814 |
May 2, 2012 |
|
|
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A61P 25/00 20180101;
A61P 11/00 20180101; C07C 235/46 20130101; C07C 237/30 20130101;
A61P 19/02 20180101; C07C 323/63 20130101; C07C 311/37 20130101;
A61P 9/10 20180101; C07C 321/26 20130101; C07C 323/62 20130101;
A61P 1/00 20180101; A61P 31/04 20180101; A61P 1/16 20180101; A61P
11/06 20180101; A61P 17/06 20180101; C07C 311/16 20130101; A61P
11/08 20180101; A61P 43/00 20180101; A61P 9/00 20180101; A61P 27/02
20180101; A61P 29/00 20180101; A61P 35/00 20180101; A61P 3/10
20180101; C07C 311/29 20130101; A61P 13/12 20180101 |
International
Class: |
C07C 321/26 20060101
C07C321/26; C07C 311/29 20060101 C07C311/29; C07C 311/16 20060101
C07C311/16; C07C 311/37 20060101 C07C311/37; C07C 323/62 20060101
C07C323/62; C07C 235/46 20060101 C07C235/46; C07C 323/63 20060101
C07C323/63; C07C 237/30 20060101 C07C237/30 |
Claims
1. A compound of Formula I: ##STR00092## or a pharmaceutically
acceptable salt thereof; wherein: R.sup.1 and R.sup.4 are
independently hydrogen or optionally substituted C.sub.1-6alkyl; or
R.sup.1 is selected from --C(O)alkyl, --(O)aryl, --C(O)-arylalkyl,
C(O)heteroaryl, and --C(O)-heteroarylalkyl; R.sup.2 is hydrogen;
R.sup.3 is fluorine; R.sup.5 is an unsubstituted phenylene group or
a phenylene group substituted by one or more groups independently
selected from alkyl, halo, alkoxy and haloalkyl; ##STR00093##
R.sup.6 is selected from R.sup.7 and R.sup.8 are independently
selected from the group consisting of hydrogen, optionally
substituted C.sub.1-6alkyl and optionally substituted
C.sub.3-7cycloalkyl; and X is CH.sub.2, oxygen, sulfur or
SO.sub.2.
2. The compound of claim 1, or a pharmaceutically acceptable salt
thereof, wherein R.sup.1 is hydrogen and R.sup.4 is methyl; or
R.sup.1 is methyl and R.sup.4 is hydrogen.
3. The compound of claim 1, or a pharmaceutically acceptable salt
thereof, wherein R.sup.1 and R.sup.4 are both hydrogen.
4. The compound of claim 1, or a pharmaceutically acceptable salt
thereof, wherein R.sup.5 is an unsubstituted phenylene group or a
phenylene group substituted by one or more groups independently
selected from methyl, fluorine, chlorine, bromine, OCH.sub.3 and
CF.sub.3.
5. The compound of claim 1, or a pharmaceutically acceptable salt
thereof, wherein R.sup.7 and R.sup.8 are both hydrogen, R.sup.7 and
R.sup.8 are both C.sub.1-6alkyl, or R.sup.7 is hydrogen and R.sup.8
is C.sub.1-6alkyl.
6. The compound of claim 1, or a pharmaceutically acceptable salt
thereof, wherein X is oxygen.
7. The compound of claim 1 wherein said compound is selected from
the group consisting of: TABLE-US-00003 3 ##STR00094##
(E)-4-(2-(Aminomethyl)-3- fluoroallyloxy)benzamide; 5 ##STR00095##
(E)-4-(3-(Aminomethyl)-4- fluorobut-3-en-2-yloxy)-N-
tert-butylbenzamide 12 ##STR00096## (E)-N-tert-Butyl-4-(3-
fluoro-2-((methylamino)- methyl)allyloxy)benzamide 13 ##STR00097##
(E)-4-(2-(Aminomethyl)-3- fluoroallyloxy)-N,N- dimethylbenzamide;
19 ##STR00098## (E)-4-(2-(Aminomethyl)-3- fluoroallyloxy)-N-tert-
butyl-3-fluorobenzamide 21 ##STR00099## (E)-4-(2-(Aminomethyl)-
3-fluoroallyloxy)-N-tert- butyl-2-(trifluoromethyl)- benzamide 23
##STR00100## (E)-4-(2-(Aminomethyl)- 3-fluoroallyloxy)-N-tert-
butylbenzamide; 24 ##STR00101## (E)-4-(2-(Aminomethyl)-
3-fluoroallyloxy)-N,N- diethylbenzamide; 25 ##STR00102##
(E)-4-(2-(Aminomethyl)- 3-fluoroallyloxy)-N- methylbenzamide; 34
##STR00103## (Z)-4-(3-(Aminomethyl)- 4-fluorobut-3-enyl)-N-tert-
butylbenzamide 39 ##STR00104## (E)-4-(2-(Aminomethyl)-
3-fluoroallyloxy)-N- isopropylbenzamide;
or a pharmaceutically acceptable salt thereof.
8. The compound of claim 1 selected from the group consisting of:
TABLE-US-00004 13 ##STR00105## (E)-4-(2-(Aminomethyl)-
3-fluoroallyloxy)-N,N- dimethylbenzamide; 23 ##STR00106##
(E)-4-(2-(Aminomethyl)- 3-fluoroallyloxy)-N-tert- butylbenzamide;
24 ##STR00107## (E)-4-(2-(Aminomethyl)- 3-fluoroallyloxy)-N,N-
diethylbenzamide; 25 ##STR00108## (E)-4-(2-(Aminomethyl)-
3-fluoroallyloxy)-N- methylbenzamide; 39 ##STR00109##
(E)-4-(2-(Aminomethyl)- 3-fluoroallyloxy)-N-
isopropylbenzamide;
or a pharmaceutically acceptable salt thereof.
9. The compound of claim 1 wherein said compound is
(E)-4-(2-(aminomethyl)-3-fluoroallyloxy) -N-tert-butylbenzamide or
a pharmaceutically acceptable salt thereof.
10. A pharmaceutically acceptable salt of a compound according to
claim 1.
11. The pharmaceutically acceptable salt according to claim 10
characterized in that it is an acid addition salt.
12. The pharmaceutically acceptable salt according to claim 11
characterized in that the acid addition salt is selected from the
group consisting of hydrochlorides, hydrobromides, sulfates,
formates, acetates, lactates, malates, tartrates, citrates,
ascorbates, succinates, maleates, butyrates, valerates and
fumarates.
13. The pharmaceutically acceptable salt of claim 10 wherein said
pharmaceutically acceptable salt is
(E)-4-(2-(aminomethyl)-3-fluoroallyloxy)-N-tert-butylbenzamide
hydrochloride.
14. A pharmaceutical composition comprising a compound according to
claim 1, or a pharmaceutically acceptable salt thereof, and at
least one pharmaceutically acceptable excipient, carrier or
diluent.
15. A method of inhibiting the amine oxidase activity of
semicarbazide-sensitive amine oxidase/ vascular adhesion protein-1
(SSAO/VAP-1) in a subject in need thereof, said method comprising
administering to said subject an effective amount of a compound
according to claim 1, or a pharmaceutically acceptable salt
thereof, to effect a positive therapeutic response.
16. A method of therapeutically treating a disease associated with
or modulated by semicarbazide-sensitive amine oxidase/ vascular
adhesion protein-1 (SSAO/VAP-1), said method comprising
administering to a subject in need thereof a therapeutically
effective amount of a compound according to claim 1, or a
pharmaceutically acceptable salt thereof.
17. The method of claim 16 wherein the disease is inflammation.
18. The method of claim 17 wherein said inflammation is associated
with liver disease, respiratory disease, cystic fibrosis, asthma or
chronic obstructive pulmonary disease, or ocular disease.
19. The method of claim 16 wherein the disease is a
diabetes-induced disease selected from the group consisting of
diabetic nephropathy, glomerulosclerosis, diabetic retinopathy,
non-alcoholic fatty liver disease and choroidal
neovascularisation.
20. The method of claim 16 wherein the disease is a
neuroinflammatory disease.
21. The method of claim 16 wherein the disease is selected from the
group consisting of liver fibrosis, liver cirrhosis, non-alcoholic
steatohepatitis (NASH), kidney fibrosis, idiopathic pulmonary
fibrosis and radiation-induced fibrosis.
22. The method according to claim 16 characterized in that the
disease is non-alcoholic steatohepatitis (NASH).
23. The method according to claim 16 characterized in that the
disease is diabetic retinopathy.
24. The method according to claim 16 characterized in that the
disease is cancer.
Description
TECHNICAL FIELD
[0001] The present invention relates to novel compounds which are
capable of inhibiting certain amine oxidase enzymes. These
compounds are useful for treatment of a variety of indications,
e.g., the symptoms of inflammation and/or fibrosis in human
subjects as well as in pets and livestock, the treatment of
psychological diseases, neurodegenerative disorders, and the like.
In addition, the present invention relates to pharmaceutical
compositions containing these compounds, as well as various uses
therefore.
BACKGROUND
[0002] Semicarbazide-sensitive amine oxidase (SSAO), also known as
primary amine oxidase, plasma amine oxidase and benzylamine
oxidase, is identical in structure to vascular adhesion protein-1
(VAP-1). In the following discussion, SSAO/VAP-1 is used to
describe this protein. The role of this protein in inflammatory
diseases has been reviewed (see, for example, Smith D. J. and Vaino
P. J., Targeting Vascular Adhesion Protein-1 to Treat Autoimmune
and Inflammatory Diseases. Ann. N.Y. Acad. Sci. 2007, 1110,
382-388; and McDonald I. A. et al., Semicarbazide Sensitive Amine
Oxidase and Vascular Adhesion Protein-1: One Protein Being
Validated as a Therapeutic Target for Inflammatory Diseases. Annual
Reports in Medicinal Chemistry, 2008, 43, 229-241).
[0003] In most organisms, including humans, two families of
mammalian amine oxidases metabolize various mono-, di-, and
polyamines produced endogenously or absorbed from exogenous
sources. These include the monoamine oxidases (MAO-A and MAO-B)
which are present in the mitochondria of most cell types and use
covalently bound flavin adenine dinucleotide (FAD) as the cofactor.
Polyamine oxidase is another FAD-dependent amine oxidase which
oxidatively deaminates spermine and spermidine. SSAO/VAP-1 belongs
to the second family which is dependent on copper and uses other
co-factors apart from FAD, such as an oxidized tyrosine residue
(abbreviated as TPQ or LTQ). MAO and SSAO/VAP-1 oxidatively
deaminate some common substrates which includes the monoamines such
dopamine, tyramine and benzylamine SSAO/VAP-1 also oxidizes
endogenous methylamine and aminoacetone.
[0004] Some of these enzymes were originally defined by the ability
of certain compounds to inhibit the enzymatic activity thereof. For
example MAO-A is selectively inhibited by clorgyline, MAO-B by
L-deprenyl, while neither clorgyline nor L-deprenyl can inhibit the
amine oxidase activity of SSAO/VAP-1. SSAO/VAP-1 can be inhibited
by semicarbazide, hence the name semicarbazide sensitive amine
oxidase.
[0005] SSAO/VAP-1 is an ectoenzyme containing a very short
cytoplasmic tail, a single transmembrane domain, and a large,
highly glycosylated extracellular domain which contains the active
center for the amine oxidase activity. SSAO/VAP-1 is also present
in a soluble form circulating in the plasma of some animals. It has
been shown that this form is a cleaved product of membrane-bound
SSAO/VAP-1.
[0006] SSAO/VAP-1 appears to have two physiological functions: the
first is the amine oxidase activity mentioned above and the second
is cell adhesion activity. Both activities are associated with
inflammatory processes. SSAO/VAP-1 was shown to play an important
role in extravasation of inflammatory cells from the circulation to
sites of inflammation (Salmi M. and Jalkanen S., VAP-1: an adhesin
and an enzyme. Trends Immunol. 2001, 22, 211-216). VAP-1 antibodies
have been demonstrated to attenuate inflammatory processes by
blocking the adhesion site of the SSAO/VAP-1 protein and, together
with a substantial body of evidence of in vitro and in vivo
knockouts, it is now clear that SSAO/VAP-1 is an important cellular
mediator of inflammation. Transgenic mice lacking SSAO/VAP-1 show
reduced adhesion of leukocytes to endothelial cells, reduced
lymphocyte homing to the lymph nodes and a concomitant attenuated
inflammatory response in a peritonitis model. These animals were
otherwise healthy, grew normally, were fertile, and examination of
various organs and tissues showed the normal phenotype.
Furthermore, inhibitors of the amine oxidase activity of SSAO/VAP-1
have been found to interfere with leukocyte rolling, adhesion and
extravasation and, similar to SSAO/VAP-1 antibodies, exhibit
anti-inflammatory properties.
[0007] Inflammation is the first response of the immune system to
infection or irritation. The migration of leukocytes from the
circulation into tissues is essential for this process.
Inappropriate inflammatory responses can result in local
inflammation of otherwise healthy tissue which can lead to
disorders such as rheumatoid arthritis, inflammatory bowel disease,
multiple sclerosis and respiratory diseases. Leukocytes first
adhere to the endothelium via binding to adhesion molecules before
they can start the process of passing through the walls of the
blood vessels. Membrane bound SSAO/VAP-1 is abundantly expressed in
vascular endothelial cells such as high venule endothelial cells
(HVE) of lymphatic organs and is also expressed in hepatic
sinusoidal endothelial cells (HSEC), smooth muscle cells and
adipocytes. The expression of SSAO/VAP-1 on the cell surface of
endothelial cells is tightly regulated and is increased during
inflammation. In the presence of an SSAO/VAP-1 substrate
(benzylamine), NFKB was activated in HSECs together with
up-regulation of other adhesion molecules, E-selectin and chemokine
CXCL8 (IL-8) in vitro. A recent study confirms this result by
showing (by mutagenesis) that the transcription and translation of
E-selectin and P-selectin is induced by the enzyme activity of
SSAO/VAP-1. These results suggest an important role of the amine
oxidase activity of SSAO/VAP-1 in the inflammatory response. It has
been reported that the oxidase activity of SSAO/VAP-1 induces
endothelial E- and P-selectins and leukocyte binding (Jalkanen, S.
et al., The oxidase activity of vascular adhesion protein-1 (VAP-1)
induces endothelial E- and P-selectins and leukocyte binding. Blood
2007, 110, 1864-1870).
[0008] Excessive and chronic inflammatory responses have been
associated with the symptoms of many chronic diseases, such as
rheumatoid arthritis, multiple sclerosis, asthma and chronic
obstructive pulmonary disease (COPD). Patients suffering from
either atopic eczema or psoriasis (both chronic inflammatory skin
disorders) have higher levels of SSAO/VAP-1 positive cells in their
skin compared to skin from healthy controls.
[0009] Asthma can be considered a disease resulting from chronic
inflammation of the airways which results in bronchoconstriction
and excessive build-up of mucus. Many patients can be adequately
treated with bronchodilators (eg, (32 agonists, leukotriene
antagonists and with inhaled steroids). However, up to about 20% of
patients suffer from severe asthma and don't respond well to these
treatments. A subset of these patients are resistant to inhaled
steroids and present with high neutrophil counts in their lung
fluids. SSAO/VAP-1 is expressed in the lungs and plays a role in
the trafficking of neutrophils.
[0010] Another subset of asthma patients is acutely sensitive to
viral infections of the airways; such infections exacerbate the
underlying inflammation and can lead to severe asthma attacks.
[0011] It has been recently recognized that patients suffering from
cystic fibrosis frequently suffer from persistent lung inflammation
which can be independent from chronic lung infection. It has been
argued that tissue damage in cystic fibrosis patients is due to
mediators released by neutrophils. While standard antibiotic
treatment to clear bacterial infection would be expected to resolve
the underlying inflammation if the inflammation were solely due to
the infection, data from recent studies demonstrate that this is
not the case and that the airways are in a neutrophil-driven
pro-inflammatory state primed for excessive and prolonged
inflammatory response to bacterial infection. See Rao S. and Grigg
J., New insights into pulmonary inflammation in cystic fibrosis.
Arch Dis Child 2006, 91:786-788.
[0012] SSAO/VAP-1 is also highly expressed in adipocytes where it
plays a role in glucose transport independent of the presence of
insulin. It has been observed that levels of plasma SSAO/VAP-1 are
increased in patients suffering from diabetes. Elevated levels of
plasma SSAO/VAP-1 have been found in patients suffering from other
illnesses, such as congestive heart failure and liver cirrhosis. It
has been suggested that SSAO/VAP-1 is associated with most, if not
all, inflammatory diseases whether the inflammation is in response
to an immune response or subsequent to other events such as
occlusion and reperfusion of blood vessels.
[0013] It has been recognized in recent years that SSAO/VAP-1 is
expressed in sinusoidal endothelial cells in the liver and that
this protein is believed to be associated with hepatic disease, in
particular liver fibrosis (Weston C. J. and Adams D. H., Hepatic
consequences of vascular adhesion protein-1 expression, J Neural
Transm 2011; 118:1055-1064). Furthermore, a VAP-1 antibody and a
small molecule inhibitor were found to attenuate carbon
tetrachloride induced fibrosis in mice. Thus, SSAO/VAP-1 inhibitors
have the potential to treat fibrotic disease (WO 2011/029996). It
has been recently reported that oxidation of methylamine by
SSAO/VAP-1 in the presence of tumor necrosis factor a induces the
expression of MAdCAM-1 in hepatic vessels, and that this is
associated with the hepatic complications of inflammatory bowel
disease (IBD) (Liaskou W. et al., Regulation of Mucosal Addressin
Cell Adhesion Molecule 1 Expression in Human and Mice by Vascular
Adhesion Protein 1 Amine Oxidase Activity, Hepatology 2011; 53,
661-672).
[0014] It has been reported that SSAO/VAP-1 inhibitors can
attenuate angiogenesis and lymphangiogenesis, and that these
inhibitors offer potential to treat ocular diseases such as macular
degeneration, corneal angiogenesis, cataracts, and inflammatory
conditions such as uveitis (US 2009/0170770; WO 2009/051223; Noda
K., et al., Inhibition of vascular adhesion protein-1 suppresses
endotoxin-induced uveitis, FASEB J. 2008, 22, 1094-1103).
[0015] Increased levels of SSAO/VAP-1 were observed in the serum of
patients suffering from hepatocellular carcinoma. In a murine
melanoma model, small molecule SSAO/VAP-1 inhibitors were shown to
retard tumor growth, in contrast to VAP-1 antibodies which had no
activity (Weston C. J. and Adams D. H., Hepatic consequences of
vascular adhesion protein-1 expression, J Neural Transm 2011,
118,1055-1064).
[0016] It was reported that SSAO/VAP-1 plays an important role in
cancer biology (Marttila-Ichihara F. et al. Small-Molecule
Inhibitors of Vascular Adhesion Protein-1 Reduce the Accumulation
of Myeloid Cells into Tumors and Attenuate Tumor Growth in Mice.
The Journal of Immunology, 2010, 184, 3164-3173). SSAO/VAP-1 small
molecule inhibitors reduced the number of proangiogenic
Gr-1+CD11b+myeloid cells in melanomas and lymphomas.
[0017] During the SSAO/VAP-1 amine oxidase catalytic cycle the
covalently bound cofactor, TPQ, is first reduced, and then
re-oxidized by oxygen in the presence of copper with the generation
of hydrogen peroxide as a by-product. It has been speculated that
excessive hydrogen peroxide concentrations can be deleterious and
may contribute to the pathology of various inflammatory and
neurodegenerative processes (Gotz M. E., et al., Oxidative stress:
Free radical production in neural degeneration. Pharmacol Ther
1994, 63, 37-122).
[0018] Inflammation is believed to be an important feature of
neurodegenerative diseases such as Parkinson's disease, Alzheimer's
disease and multiple sclerosis, and similarly is a feature of the
pathophysiology that occurs after a cerebral occlusion/reperfusion
event (Aktas, O. et al., Neuronal damage in brain inflammation.
Arch Neurol 2007, 64,185-9). Excessive activity SSAO/VAP-1 has been
independently implicated in these processes (Xu, H-L., et al.,
Vascular Adhesion Protein-1 plays an important role in postischemic
inflammation and neuropathology in diabetic, estrogen-treated
ovariectomized female rats subjected to transient forebrain
ischemia. Journal Pharmacology and Experimental Therapeutics, 2006,
317, 19-26).
[0019] Some known MAO inhibitors also inhibit SSAO/VAP-1 (e.g., the
MAO-B inhibitor Mofegiline illustrated below). Mofegiline has been
reported to inhibit experimental autoimmune encephalomyelitis (US
2006/0025438 A1). This inhibitor is a member of the haloallylamine
family of MAO inhibitors; the halogen in Mofegiline is fluorine.
Fluoroallylamine inhibitors are described in U.S. Pat. No.
4,454,158. There have been reports of a chloroallylamine, MDL72274
(illustrated below), selectively inhibiting rat SSAO/VAP-1 compared
to MAO-A and MAO-B:
##STR00002##
[0020] Additional fluoroallylamine inhibitors are described in U.S.
Pat. No. 4,699,928; the two compounds illustrated below were
described as selective inhibitors of MAO-B:
##STR00003##
[0021] Other examples structurally related to Mofegiline can be
found in WO 2007/120528.
[0022] Haloallylamine compounds that differ from Mofegiline in core
structure have been synthesized and were shown to inhibit the amine
oxidase activity from copper-dependent amine oxidases from a number
of species (see Kim J., et al., Inactivation of bovine plasma amine
oxidase by haloallylamines. Bioorg Med Chem 2006, 14, 1444-1453).
These compounds have been included in a patent application (WO
2007/005737):
##STR00004##
[0023] WO 2009/066152 describes a family of 3-substituted
3-haloallylamines that are inhibitors of SSAO/VAP-1 and are claimed
as treatment for a variety of indications, including inflammatory
disease. The following compounds are specifically described:
##STR00005##
[0024] References to the effects of SSAO/VAP-1 inhibitors in
various animal models of disease can be found in the review
publication by McDonald I. A. et al., Semicarbazide Sensitive Amine
Oxidase and Vascular Adhesion Protein-1: One Protein Being
Validated as a Therapeutic Target for Inflammatory Diseases. Annual
Reports in Medicinal Chemistry, 2008, 43, 229-241 and in the
following publications, O'Rourke A. M. et al., Anti-inflammatory
effects of UP 1586 [Z-3-fluoro-2-(4-methoxybenzyl)allylamine
hydrochloride], an amine-based inhibitor of semicarbazide-sensitive
amine oxidase activity. J. Pharmacol. Exp. Ther., 2008, 324,
867-875; and O'Rourke A. M. et al.,
[0025] Benefit of inhibiting SSAO in relapsing experimental
encephalomyelitis. J. Neural. Transm., 2007, 114, 845-849.
SUMMARY
[0026] The present invention provides substituted haloallylamine
compounds that inhibit SSAO/VAP-1. Surprisingly, modification of
2-substituted-3-haloallylamine structures described previously has
led to the development of novel compounds that are potent
inhibitors of the human SSAO/VAP-1 enzyme and which have much
improved pharmacological and safety properties. These compounds are
very potent on SSAO/VAP-1 and were surprisingly found to be very
weak inhibitors of other family members, such as monoamine oxidase
A, monoamine oxidase B, diamine oxidase, lysyl oxidase, and
lysyl-like amine oxidases LOX1-4.
[0027] A first aspect of the invention provides for a compound of
Formula I:
##STR00006##
or a stereoisomer, pharmaceutically acceptable salt, polymorphic
form, solvate or prodrug thereof; wherein:
[0028] R.sup.1 and R.sup.4 are independently hydrogen or optionally
substituted C.sub.1-6alkyl;
[0029] R.sup.2 and R.sup.3 are independently selected from the
group consisting of hydrogen, chlorine and fluorine; provided,
however, that R.sup.2 and R.sup.3 are not hydrogen at the same
time;
[0030] R.sup.5 is an optionally substituted arylene group;
[0031] R.sup.6 is selected from
##STR00007##
[0032] R.sup.7 and R.sup.8 are independently selected from the
group consisting of hydrogen, optionally substituted C.sub.1-6alkyl
and optionally substituted C.sub.3-7cycloalkyl; and
[0033] X is CH.sub.2, oxygen, sulfur or SO.sub.2.
[0034] A second aspect of the invention provides for a
pharmaceutical composition comprising a compound according to the
first aspect of the invention, or a pharmaceutically acceptable
salt or solvate thereof, and at least one pharmaceutically
acceptable excipient, carrier or diluent.
[0035] A third aspect of the invention provides for a method of
inhibiting the amine oxidase activity of SSAO/VAP-1 in a subject in
need thereof, said method comprising administering to said subject
an effective amount of a compound according to the first aspect of
the invention, or a pharmaceutically acceptable salt or solvate
thereof, or a composition according to the second aspect of the
invention.
[0036] A fourth aspect of the invention provides for a method of
treating a disease associated with or modulated by SSAO/VAP-1
protein, said method comprising administering to a subject in need
thereof a therapeutically effective amount of a compound according
to the first aspect of the invention, or a pharmaceutically
acceptable salt or solvate thereof, or a composition according to
the second aspect of the invention.
[0037] A fifth aspect of the invention provides for a method of
treating a disease associated with or modulated by SSAO/VAP-1, said
method comprising administering to a subject in need thereof a
therapeutically effective amount of a compound according to the
first aspect of the invention, or a pharmaceutically acceptable
salt or solvate thereof, or a composition according to the second
aspect of the invention.
[0038] A sixth aspect of the invention provides for use of a
compound according to the first aspect of the invention, or a
pharmaceutically acceptable salt or solvate thereof, for the
manufacture of a medicament for treating a disease associated with
or modulated by SSAO/VAP-1 protein.
[0039] A seventh aspect of the invention provides for a compound
according to the first aspect of the invention, or a
pharmaceutically acceptable salt or solvate thereof, for use in
treating a disease associated with or modulated by SSAO/VAP-1
protein.
[0040] In another aspect, the present invention describes the
synthesis and use of compounds which inhibit the amine oxidase
activity of SSAO/VAP-1, and describes the use of such inhibitors to
treat patients suffering inflammatory diseases.
[0041] The compounds of the present invention are useful for the
treatment of the symptoms of inflammation and/or fibrosis in human
subjects as well as in pets and livestock. Human inflammatory
diseases contemplated for treatment herein include arthritis,
Crohn's disease, irritable bowel disease, psoriasis, eosinophilic
asthma, severe asthma, virally exacerbated asthma, chronic
pulmonary obstructive disease, cystic fibrosis, bronchiectasis,
atherosclerosis, inflammation due to diabetes, inflammatory
cell-mediated tissue destruction following stroke, and the like.
Human fibrotic diseases and disorders contemplated for treatment
herein include idiopathic pulmonary fibrosis or other interstitial
lung diseases, liver fibrosis, kidney fibrosis, fibrosis of other
organs and tissues, radiation induced fibrosis, and the like.
[0042] The compounds of the present invention are also useful for
the treatment of bacteria-induced lung inflammation associated with
cystic fibrosis. Treatment can be both prophylactic and
therapeutic. Furthermore, the compounds of the present invention
are useful for the treatment of other bacteria-induced lung
diseases such as sepsis, acute respiratory distress syndrome
(ARDS), acute lung injury (ALI), transfusion induced lung injury
(TRALI), and the like.
[0043] The compounds of the present invention are also useful for
the treatment of ocular diseases, such as uveitis and macular
degeneration.
[0044] The compounds of the present invention are also useful as an
adjunct therapy to treat cancer. In combination with standard and
novel chemotherapeutic agents, the compounds of the present
invention can lead to better control of the cancer, and to help
reduce metastatic secondary cancers.
[0045] Since SSAO/VAP-1 small molecule inhibitors actively
attenuate neutrophil levels in the lipopolysaccharide (LPS) mouse
model of lung neutrophilia, such molecules have the potential to
treat steroid resistant asthma in human subjects. Accordingly, in
accordance with one aspect of the present invention, there are
provided methods for treating patients with an inhibitor of
SSAO/VAP-1 either as a prophylactic or therapeutic agent to reduce
neutrophil levels and treat the symptoms of severe asthma.
[0046] In accordance with another aspect of the present invention,
there are provided methods for treating patients with an inhibitor
of SSAO/VAP-1 either as a prophylactic agent or as a therapeutic
agent to treat on-going disease.
[0047] In accordance with still another aspect of the present
invention, there are provided methods for the use of an SSAO/VAP-1
inhibitor to modulate the concentration of neutrophils in the
airways and to treat the underlying cause of inflammation in
patients suffering from inflammation of the airways.
[0048] In accordance with yet another aspect of the present
invention, there are provided methods for treating patients
suffering from liver fibrosis with an SSAO/VAP-1 inhibitor.
[0049] In accordance with a further aspect of the present
invention, there are provided methods for treating patients
suffering from ocular disease with an SSAO/VAP-1 inhibitor to treat
symptoms of the disease.
[0050] Since SSAO/VAP-1 is expressed in various cancer types, in
accordance with yet another aspect of the present invention, there
is contemplated the use of SSAO/VAP-1 inhibitors as adjunctive
therapy to treat patients suffering from cancers which express
SSAO/VAP-1.
[0051] In one embodiment of the methods and uses of the present
invention the disease is inflammation. In another embodiment the
inflammation is associated with liver disease. In a further
embodiment the inflammation is associated with respiratory disease.
In a still further embodiment the inflammation is associated with
cystic fibrosis. In another embodiment the inflammation is
associated with asthma or chronic obstructive pulmonary disease. In
a further embodiment the inflammation is associated with ocular
disease.
[0052] In one embodiment of the methods and uses of the present
invention the disease is a diabetes-induced disease selected from
the group consisting of diabetic nephropathy, glomerulosclerosis,
diabetic retinopathy, non-alcoholic fatty liver disease and
choroidal neovascularisation.
[0053] In another embodiment of the methods and uses of the present
invention the disease is a neuroinflammatory disease. In a further
embodiment of the methods and uses of the present invention the
disease is selected from the group consisting of liver fibrosis,
liver cirrhosis, kidney fibrosis, idiopathic pulmonary fibrosis and
radiation-induced fibrosis. In a still further embodiment of the
methods and uses of the present invention the disease is
cancer.
Definitions
[0054] The following are some definitions that may be helpful in
understanding the description of the present invention. These are
intended as general definitions and should in no way limit the
scope of the present invention to those terms alone, but are put
forth for a better understanding of the following description.
[0055] Unless the context requires otherwise or specifically stated
to the contrary, integers, steps, or elements of the invention
recited herein as singular integers, steps or elements clearly
encompass both singular and plural forms of the recited integers,
steps or elements.
[0056] Throughout this specification, unless the context requires
otherwise, the word "comprise", or variations such as "comprises"
or "comprising", will be understood to imply the inclusion of a
stated step or element or integer or group of steps or elements or
integers, but not the exclusion of any other step or element or
integer or group of elements or integers. Thus, in the context of
this specification, the term "comprising" means "including
principally, but not necessarily solely".
[0057] Those skilled in the art will appreciate that the invention
described herein is susceptible to variations and modifications
other than those specifically described. It is to be understood
that the invention includes all such variations and modifications.
The invention also includes all of the steps, features,
compositions and compounds referred to or indicated in this
specification, individually or collectively, and any and all
combinations or any two or more of said steps or features.
[0058] As used herein, the term "alkyl" includes within its meaning
monovalent ("alkyl") and divalent ("alkylene") straight chain or
branched chain saturated hydrocarbon radicals having from 1 to 6
carbon atoms, e.g., 1, 2, 3, 4, 5 or 6 carbon atoms (unless
specifically defined). The straight chain or branched alkyl group
is attached at any available point to produce a stable compound. In
many embodiments, a lower alkyl is a straight or branched alkyl
group containing from 1-6, 1-4, or 1-2, carbon atoms. For example,
the term alkyl includes, but is not limited to, methyl, ethyl,
1-propyl, isopropyl, 1-butyl, 2-butyl, isobutyl, tert-butyl, amyl,
1,2-dimethylpropyl, 1,1-dimethylpropyl, pentyl, isopentyl, hexyl,
4-methylpentyl, 1-methylpentyl, 2-methylpentyl, 3-methylpentyl,
2,2-dimethylbutyl, 3,3-dimethylbutyl, 1,2-dimethylbutyl,
1,3-dimethylbutyl, 1,2,2-trimethylpropyl, 1,1,2-trimethylpropyl,
and the like.
[0059] The term "alkoxy" as used herein refers to straight chain or
branched alkyloxy (i.e, 0-alkyl) groups, wherein alkyl is as
defined above. Examples of alkoxy groups include methoxy, ethoxy,
n-propoxy, and isopropoxy
[0060] The term "cycloalkyl" as used herein includes within its
meaning monovalent ("cycloalkyl") and divalent ("cycloalkylene")
saturated, monocyclic, bicyclic, polycyclic or fused analogs. In
the context of the present disclosure the cycloalkyl group may have
from 3 to 10 or from 3 to 7 carbon atoms A fused analog of a
cycloalkyl means a monocyclic ring fused to an aryl or heteroaryl
group in which the point of attachment is on the non-aromatic
portion. Examples of cycloalkyl and fused analogs thereof include
cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl,
tetrahydronaphthyl, decahydronaphthyl, indanyl, and the like.
[0061] The term "aryl" or variants such as "arylene" as used herein
refers to monovalent ("aryl") and divalent ("arylene") single,
polynuclear, conjugated and fused analogs of aromatic hydrocarbons
having from 6 to 10 carbon atoms. A fused analog of aryl means an
aryl group fused to a monocyclic cycloalkyl or monocyclic
heterocyclyl group in which the point of attachment is on the
aromatic portion. Examples of aryl and fused analogs thereof
include phenyl, naphthyl, indanyl, indenyl, tetrahydronaphthyl,
2,3-dihydrobenzofuranyl, dihydrobenzopyranyl, 1,4-benzodioxanyl,
and the like. Examples of an arylene include phenylene and
natpthylene. A "substituted aryl" is an aryl that is independently
substituted, with one or more, preferably 1, 2 or 3 substituents,
attached at any available atom to produce a stable compound. A
"substituted arylene" is an arylene that is independently
substituted, with one or more, preferably 1, 2 or 3 substituents,
attached at any available atom to produce a stable compound.
[0062] The term "alkylaryl" as used herein, includes within its
meaning monovalent ("aryl") and divalent ("arylene"), single,
polynuclear, conjugated and fused aromatic hydrocarbon radicals
attached to divalent, saturated, straight or branched chain
alkylene radicals. Examples of alkylaryl groups include, but are
not limited to, benzyl.
[0063] The term "heteroaryl" refers to a monocyclic aromatic ring
structure containing 5 or 6 ring atoms, wherein heteroaryl contains
one or more heteroatoms independently selected from the group
consisting of O, S, and N. Heteroaryl is also intended to include
oxidized S or N, such as sulfinyl, sulfonyl and N-oxide of a
tertiary ring nitrogen. A carbon or nitrogen atom is the point of
attachment of the heteroaryl ring structure such that a stable
compound is produced. Examples of heteroaryl groups include, but
are not limited to, pyridinyl, pyridazinyl, pyrazinyl, quinaoxalyl,
indolizinyl, benzo[b]thienyl, quinazolinyl, purinyl, indolyl,
quinolinyl, pyrimidinyl, pyrrolyl, oxazolyl, thiazolyl, thienyl,
isoxazolyl, oxathiadiazolyl, isothiazolyl, tetrazolyl, imidazolyl,
triazinyl, furanyl, benzofuryl, and indolyl. "Nitrogen containing
heteroaryl" refers to heteroaryl wherein any heteroatoms are N. A
"substituted heteroaryl" is a heteroaryl that is independently
substituted, with one or more, preferably 1, 2 or 3 substituents,
attached at any available atom to produce a stable compound.
[0064] "Heteroarylene" refers to a divalent, monocyclic aromatic
ring structure containing 5 or 6 ring atoms, wherein heteroarylene
contains one or more heteroatoms independently selected from the
group consisting of O, S, and N. Heteroarylene is also intended to
include oxidized S or N, such as sulfinyl, sulfonyl and N-oxide of
a tertiary ring nitrogen. A carbon or nitrogen atom is the point of
attachment of the heteroarylene ring structure to the substituents
thereon, such that a stable compound is produced. Examples of
heteroaryl groups include, but are not limited to, pyridinylene,
pyridazinylene, pyrazinylene, quinaoxalylene, indolizinylene,
benzo[b]thienylene, quinazolinylene, purinylene, indolylene,
quinolinylene, pyrimidinylene, pyrrolylene, oxazolylene,
thiazolylene, thienylene, isoxazolylene, oxathiadiazolylene,
isothiazolylene, tetrazolylene, imidazolylene, triazinylene,
furanylene, benzofurylene, and indolylene. "Nitrogen containing
heteroarylene" refers to heteroarylene wherein any heteroatoms are
N. A "substituted heteroarylene" is a heteroarylene that is
independently substituted, with one or more, preferably 1, 2 or 3
substituents, attached at any available atom to produce a stable
compound.
[0065] The term "heterocyclyl" and variants such as
"heterocycloalkyl" as used herein, includes within its meaning
monovalent ("heterocyclyl") and divalent ("heterocyclylene"),
saturated, monocyclic, bicyclic, polycyclic or fused hydrocarbon
radicals having from 3 to 10 ring atoms, wherein from 1 to 5, or
from 1 to 3, ring atoms are heteroatoms independently selected from
O, N, NH, or S, in which the point of attachment may be carbon or
nitrogen. A fused analog of heterocyclyl means a monocyclic
heterocycle fused to an aryl or heteroaryl group in which the point
of attachment is on the non-aromatic portion. The heterocyclyl
group may be C.sub.3-8 heterocyclyl. The heterocycloalkyl group may
be C.sub.3-6 heterocyclyl. The heterocyclyl group may be C.sub.3-5
heterocyclyl. Examples of heterocyclyl groups and fused analogs
thereof include aziridinyl, pyrrolidinyl, thiazolidinyl,
piperidinyl, piperazinyl, imidazolidinyl,
2,3-dihydrofuro(2,3-b)pyridyl, benzoxazinyl, tetrahydroquinolinyl,
tetrahydroisoquinolinyl, dihydroindolyl, quinuclidinyl, azetidinyl,
morpholinyl, tetrahydrothiophenyl, tetrahydrofuranyl,
tetrahydropyranyl, and the like. The term also includes partially
unsaturated monocyclic rings that are not aromatic, such as 2- or
4-pyridones attached through the nitrogen or N-substituted
uracils.
[0066] The term "halogen" or variants such as "halide" or "halo" as
used herein refers to fluorine, chlorine, bromine and iodine.
[0067] The term "heteroatom" or variants such as "hetero-" or
"heterogroup" as used herein refers to O, N, NH and S.
[0068] In general, "substituted" refers to an organic group as
defined herein (e.g., an alkyl group) in which one or more bonds to
a hydrogen atom contained therein are replaced by a bond to
non-hydrogen or non-carbon atoms. Substituted groups also include
groups in which one or more bonds to a carbon(s) or hydrogen(s)
atom are replaced by one or more bonds, including double or triple
bonds, to a heteroatom. Thus, a substituted group will be
substituted with one or more substituents, unless otherwise
specified. In some embodiments, a substituted group is substituted
with 1, 2, 3, 4, 5, or 6 substituents.
[0069] The term "optionally substituted" as used herein means the
group to which this term refers may be unsubstituted, or may be
substituted with one or more groups independently selected from
alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl,
heterocycloalkyl, halo, haloalkyl, haloalkynyl, hydroxyl,
hydroxyalkyl, alkoxy, thioalkoxy, alkenyloxy, haloalkoxy,
haloalkenyloxy, NO.sub.2, NH(alkyl), N(alkyl).sub.2, nitroalkyl,
nitroalkenyl, nitroalkynyl, nitroheterocyclyl, alkylamino,
dialkylamino, alkenylamine, alkynylamino, acyl, alkenoyl, alkynoyl,
acylamino, diacylamino, acyloxy, alkylsulfonyloxy, heterocycloxy,
heterocycloamino, haloheterocycloalkyl, alkylsulfenyl,
alkylcarbonyloxy, alkylthio, acylthio, phosphorus-containing groups
such as phosphono and phosphinyl, aryl, heteroaryl, alkylaryl,
aralkyl, alkylheteroaryl, cyano, cyanate, isocyanate, CO.sub.2H,
CO.sub.2alkyl, C(O)NH.sub.2, --C(O)NH(alkyl), and
--C(O)N(alkyl).sub.2. Preferred substituents include halogen,
C.sub.1-C.sub.6alkyl, C.sub.2-C.sub.6alkenyl,
C.sub.1-C.sub.6haloalkyl, C.sub.1-C.sub.6alkoxy,
hydroxy(C.sub.1-6)alkyl, C.sub.3-C.sub.6cycloalkyl, C(O)H, C(O)OH,
NHC(O)H, NHC(O)C.sub.1-C.sub.4alkyl, C(O)C.sub.1-C.sub.4alkyl,
NH.sub.2, NHC.sub.1-C.sub.4alkyl, N(C.sub.1-C.sub.4alkyl).sub.2,
NO.sub.2, OH and CN. Particularly preferred substituents include
C.sub.1-3alkyl, C.sub.1-3alkoxy, halogen, OH,
hydroxy(C.sub.1-3)alkyl (e.g., CH.sub.2OH),
C(O)C.sub.1-C.sub.4alkyl (eg C(O)CH.sub.3), and C.sub.1-3haloalkyl
(e.g, CF.sub.3, CH.sub.2CF.sub.3).
[0070] The present invention includes within its scope all
stereoisomeric and isomeric forms of the compounds disclosed
herein, including all diastereomeric isomers, racemates,
enantiomers and mixtures thereof. Compounds of the present
invention may have asymmetric centers and may occur, except when
specifically noted, as mixtures of stereoisomers or as individual
diastereomers, or enantiomers, with all isomeric forms being
included in the present invention. It is also understood that the
compounds described by Formula I may be present as E and Z isomers,
also known as cis and trans isomers. Thus, the present disclosure
should be understood to include, for example, E, Z, cis, trans,
(R), (S), (L), (D), (+), and/or (-) forms of the compounds, as
appropriate in each case. Where a structure has no specific
stereoisomerism indicated, it should be understood that any and all
possible isomers are encompassed. Compounds of the present
invention embrace all conformational isomers. Compounds of the
present invention may also exist in one or more tautomeric forms,
including both single tautomers and mixtures of tautomers. Also
included in the scope of the present invention are all polymorphs
and crystal forms of the compounds disclosed herein.
[0071] The present invention includes within its scope isotopes of
different atoms. Any atom not specifically designated as a
particular isotope is meant to represent any stable isotope of that
atom. Thus, the present disclosure should be understood to include
deuterium and tritium isotopes of hydrogen
[0072] All references cited in this application are specifically
incorporated by cross-reference in their entirety. Reference to any
such documents should not be construed as an admission that the
document forms part of the common general knowledge or is prior
art.
[0073] In the context of this specification the term
"administering" and variations of that term including "administer"
and "administration", includes contacting, applying, delivering or
providing a compound or composition of the invention to an
organism, or a surface by any appropriate means. In the context of
this specification, the term "treatment", refers to any and all
uses which remedy a disease state or symptoms, prevent the
establishment of disease, or otherwise prevent, hinder, retard, or
reverse the progression of disease or other undesirable symptoms in
any way whatsoever.
[0074] In the context of this specification the term "effective
amount" includes within its meaning a sufficient but non-toxic
amount of a compound or composition of the invention to provide a
desired effect. Thus, the term "therapeutically effective amount"
includes within its meaning a sufficient but non-toxic amount of a
compound or composition of the invention to provide the desired
therapeutic effect. The exact amount required will vary from
subject to subject depending on factors such as the species being
treated, the sex, age and general condition of the subject, the
severity of the condition being treated, the particular agent being
administered, the mode of administration, and so forth. Thus, it is
not possible to specify an exact "effective amount". However, for
any given case, an appropriate "effective amount" may be determined
by one of ordinary skill in the art using only routine
experimentation.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
[0075] FIGS. 1A-1E show the ability of Compound 23 to inhibit
SSAO/VAP-1 enzyme in various tissues in rats after a single oral
dose, with activity determined 24 hours after administration:
Abdominal Fat (FIG. 1A); Plasma (FIG. 1B); Lung (FIG. 1C); Aorta
(FIG. 1D); Liver (FIG. 1E).
[0076] FIGS. 2A-2E show the ability of 2 mg/kg of Compound 23 to
inhibit SSAO/VAP-1 enzyme in various tissues in rats after a single
oral dose, with activity determined at various time points after
administration: Abdominal Fat (FIG. 2A); Plasma (FIG. 2B); Lung
(FIG. 2C); Aorta (FIG. 2D); Liver (FIG. 2E).
[0077] FIGS. 3A-3E show the ability of Compound 23 to inhibit
SSAO/VAP-1 enzyme in various tissues in rats after 5 days of
repeated, daily oral dosing, with activity determined 24 hours
after administration of the final dose: Abdominal Fat (FIG. 3A);
Plasma (FIG. 3B); Lung (FIG. 3C); Aorta (FIG. 3D); Liver (FIG.
3E).
[0078] FIGS. 4A-4D show the ability of Compound 23 to reduce
inflammation in an inflamed air pouch in a mouse model: Neutrophils
in exudate (FIG. 4A); Exudate volume (FIG. 4B); IL-6 in exudate
(FIG. 4C); TNF-.alpha. in exudate (FIG. 4D).
[0079] FIGS. 5A & 5B show the ability of Compound 23 to reduce
leukocyte migration in the mouse cremaster microcirculation:
Inhibition of leukocyte rolling (FIG. 5A); Inhibition of leukocyte
adhesion (FIG. 5B).
[0080] FIGS. 6A & 6B show the ability of Compound 23 to reduce
inflammation in a cecal ligation and perforation (CLP) model in the
mouse: Total cell count (FIG. 6A); Reduction of mortality (FIG.
6B).
[0081] FIGS. 7A-7F show the ability of Compound 9 to reduce
neutrophil migration and microglial activation in a mouse model of
neurodegeneration: Neutrophils in substantia nigra (FIG. 7A);
Neutrophils in dorso-lateral striatum (DLS) (FIG. 7B); Neutrophils
in hippocampus (7C); Microglial cells in substantia nigra (FIG.
7D); Microglial cells in dorso-lateral striatum (DLS) (FIG. 7E);
Microglial cells in hippocampus (FIG. 7F).
[0082] FIGS. 8A-8C show the ability of Compound 9 to reduce
inflammation in a mouse model of acute lung inflammation:
[0083] FIGS. 9A & 9B show the ability of Compound 23 to reduce
neutrophil migration to the lung and airway hyper reactivity in a
mouse model of allergic asthma: Inhibition of neutrophils in
broncheoalveolar lavage fluid (BALF) (FIG. 9A); Inhibition of
methacholine-induced hyper reactivity (FIG. 9B).
[0084] FIGS. 10A & 10B show the ability of Compound 9 to reduce
leukocyte migration into the lung and protect against mortality in
a mouse model of bacterial lung infection: Reduction of mortality
(FIG. 10A); Inhibition of leukocytes in broncheoalveolar lavage
fluid (BALF) (FIG. 10B).
[0085] FIG. 11 shows the ability of Compound 23 to reduce the
amount of soluble collagen in a mouse model of COPD.
[0086] FIGS. 12A-12E show the ability of Compound 23 to improve
liver function, reduce fibrosis and reduce inflammation in a rat
model of liver fibrosis: Reduction in serum ALT (FIG. 12A);
Reduction in liver AST (FIG. 12B); Reduction in Sirius red area
(FIG. 12C); Reduction of inflammation score (FIG. 12D); Reduction
of steatotic regions in the liver (FIG. 12E).
[0087] FIGS. 13A-13D show the ability of Compound 23 to reduce
inflammation and fibrosis in a mouse model of fatty liver disease:
Reduction of inflammation score (FIG. 13A); Reduction in
non-alcoholic fatty liver disease (NAFLD) activity score (FIG.
13B); Reduction in Sirius red area (FIG. 13C); Reduction in liver
triglycerides (FIG. 13D).
[0088] FIGS. 14A & 14B show the ability of Compound 23 to
reduce inflammation in a mouse model of uveitis: Reduction of
clinical score (FIG. 14A); Reduction of eosinophil infiltration
(FIG. 14B).
DETAILED DESCRIPTION
[0089] The present invention relates to substituted haloallylamine
compounds that may inhibit SSAO/VAP-1.
[0090] In accordance with the present invention, there are provided
compounds having the structure (Formula I):
##STR00008##
[0091] or a stereoisomer, pharmaceutically acceptable salt,
polymorphic form, solvate or prodrug thereof; wherein:
[0092] R.sup.1 and R.sup.4 are independently hydrogen or optionally
substituted C.sub.1-6alkyl;
[0093] R.sup.2 and R.sup.3 are independently selected from the
group consisting of hydrogen, chlorine and fluorine; provided,
however, that R.sup.2 and R.sup.3 are not hydrogen at the same
time;
[0094] R.sup.5 is an optionally substituted arylene group;
[0095] R.sup.6 is selected from
##STR00009##
[0096] R.sup.7 and R.sup.8 are independently selected from the
group consisting of hydrogen, optionally substituted C.sub.1-6alkyl
and optionally substituted C.sub.3-7cycloalkyl; and
[0097] X is CH.sub.2, oxygen, sulfur or SO.sub.2.
[0098] In one embodiment of compounds of the present invention
R.sup.1 and R.sup.4 are both hydrogen. In another embodiment of
compounds of the present invention R.sup.1 is hydrogen and R.sup.4
is optionally substituted C.sub.1-6alkyl. In a further embodiment
of compounds of the present invention R.sup.1 is optionally
substituted C.sub.1-6alkyl and R.sup.4 is hydrogen. In another
embodiment of compounds of the present invention R.sup.1 is
hydrogen and R.sup.4 is methyl. In a further embodiment of
compounds of the present invention R.sup.1 is methyl and R.sup.4 is
hydrogen.
[0099] In one embodiment of compounds of the present invention
R.sup.2 and R.sup.3 are independently selected from the group
consisting of hydrogen, chlorine and fluorine, provided that
R.sup.2 and R.sup.3 are not hydrogen at the same time. In another
embodiment of compounds of the present invention R.sup.2 and
R.sup.3 are independently hydrogen or fluorine, provided that
R.sup.2 and R.sup.3 are not hydrogen at the same time. In a further
embodiment of compounds of the present invention R.sup.2 and
R.sup.3 are both fluorine. In another embodiment of compounds of
the present invention R.sup.2 is hydrogen and R.sup.3 is fluorine.
In a further embodiment of compounds of the present invention
R.sup.2 is fluorine and R.sup.3 is hydrogen.
[0100] In one embodiment of compounds of the present invention
R.sup.5 is an optionally substituted arylene group. In another
embodiment of compounds of the present invention R.sup.5 is an
unsubstituted arylene group. In a further embodiment of compounds
of the present invention R.sup.5 is an optionally substituted
phenylene group. In another embodiment of compounds of the present
invention R.sup.5 is an unsubstituted phenylene group. In one
embodiment of compounds of the present invention R.sup.5 is a
phenylene group optionally substituted by one or more groups
independently selected from alkyl, halo, alkoxy and haloalkyl. In
another embodiment of compounds of the present invention R.sup.5 is
a phenylene group optionally substituted by one or more groups
independently selected from methyl, fluorine, chlorine, bromine,
OCH.sub.3 and CF.sub.3.
[0101] In one embodiment of compounds of the present invention
R.sup.6 is selected from:
##STR00010##
In another embodiment of compounds of the present invention R.sup.6
is
##STR00011##
In a further embodiment of compounds of the present invention
R.sup.6 is
##STR00012##
[0102] In one embodiment of compounds of the present invention
R.sup.7 and R.sup.8 are independently selected from the group
consisting of hydrogen, optionally substituted C.sub.1-6alkyl and
optionally substituted C.sub.3-7cycloalkyl. In another embodiment
of compounds of the present invention R.sup.7 and R.sup.8 are
independently selected from the group consisting of hydrogen and
optionally substituted C.sub.1-6alkyl. In a further embodiment of
compounds of the present invention R.sup.7 and R.sup.8 are both
hydrogen. In another embodiment of compounds of the present
invention R.sup.7 and R.sup.8 are both C.sub.1-6alkyl. In a further
embodiment of compounds of the present invention R.sup.7 is
hydrogen and R.sup.8 is C.sub.1-6alkyl. In a still further
embodiment R.sup.7 and R.sup.8 are independently selected from the
group consisting of hydrogen, tert-butyl, methyl, ethyl, isopropyl
and 2-butyl.
[0103] In one embodiment of compounds of the present invention X is
CH.sub.2, oxygen, sulfur or SO.sub.2. In another embodiment of
compounds of the present invention X is CH.sub.2, oxygen or sulfur.
In further embodiment of compounds of the present invention X is
oxygen.
[0104] In a particular embodiment of the present invention, there
is provided a compound having the structure (Formula II), as
follows:
##STR00013##
or a pharmaceutically acceptable salt, solvate, polymorphic form,
or prodrug thereof; wherein:
[0105] R.sup.5 is an optionally substituted arylene group;
[0106] R.sup.6 is selected from
##STR00014##
[0107] R.sup.7 and R.sup.8 are independently selected from the
group consisting of hydrogen, optionally substituted C.sub.1-6alkyl
and optionally substituted C.sub.3-7cycloalkyl; and
[0108] X is CH.sub.2, oxygen, sulfur or SO.sub.2.
[0109] In accordance with one embodiment of the present invention,
presently preferred compounds include compounds of Formulae I and
II wherein R.sup.3 is fluorine, and X is oxygen.
[0110] It is understood that compounds described by Formulae I or
II may be administered in a prodrug form wherein the substituent
R.sup.1 can be selected from such functional groups as --C(O)alkyl,
--C(O)aryl, --C(O)-arylalkyl, C(O)heteroaryl,
--C(O)--heteroarylalkyl, or the like.
[0111] The compounds described by Formula I may exist as acid
addition salts when a basic amino group is present, or as metal
salts when an acidic group is present.
[0112] Exemplary compounds according to the present invention
include the compounds set forth in Table 1:
TABLE-US-00001 TABLE 1 1 ##STR00015## (Z)-4-(2-(Aminomethyl)-3-
fluoroallyloxy)-N-tert- butylbenzamide 2 ##STR00016##
(Z)-4-(2-(Aminomethyl)-3- fluoroallyloxy)benzamide 3 ##STR00017##
(E)-4-(2-(Aminomethyl)-3- fluoroallyloxy)benzamide 4 ##STR00018##
(Z)-4-(2-(Aminomethyl)-3- fluoroallyloxy)-3-fluoro-
N,N-dimethylbenzamide 5 ##STR00019## (E)-4-(3-(Aminomethyl)-4-
fluorobut-3-en-2-yloxy)-N- tert-butylbenzamide 6 ##STR00020##
(Z)-4-(2-(Aminomethyl)-3- fluoroallyloxy)-3-chloro-
N,N-dimethylbenzamide 7 ##STR00021## 4-(2-(Aminomethyl)-3-
fluoroallyloxy)-3-methoxy- N,N-dimethylbenzamide 8 ##STR00022##
4-(2-(Aminomethyl)-3- fluoroallylthio)-N,N- dimethylbenzamide 9
##STR00023## (Z)-4-(2-(Aminomethyl)-3- (fluoroallyloxy)benzene-
sulfonamide 10 ##STR00024## (Z)-4-(2-(Aminomethyl)-
3-fluoroallyloxy)-N,N- dimethylbenzenesulfonamide 11 ##STR00025##
(E)-4-(2-(Aminomethyl)-3- fluoroallyloxy)benzene- sulfonamide 12
##STR00026## (E)-N-tert-Butyl-4-(3-fluoro- 2-((methylamino)methyl)-
allyloxy)benzamide 13 ##STR00027## (E)-4-(2-(Aminomethyl)-3-
fluoroallyloxy)-N,N- dimethylbenzamide 14 ##STR00028##
(E)-4-(2-(Aminomethyl)- 3-fluoroallyloxy)-N,N-
dimethylbenzenesulfonamide 15 ##STR00029## (Z)-3-(2-(Aminomethyl)-
3-fluoroallyloxy)-N,N- dimethylbenzenesulfonamide 16 ##STR00030##
(Z)-4-(2-(Aminomethyl)-3- fluoroallyloxy)-N-tert-
butylbenzenesulfonamide 17 ##STR00031## (E)-4-(2-(Aminomethyl)-3-
fluoroallyloxy)-N-tert- butylbenzenesulfonamide 18 ##STR00032##
(Z)-4-(2-(Aminomethyl)- 3-fIuoroallyloxy)-N,N- dimethylbenzamide 19
##STR00033## (E)-4-(2-(Aminomethyl)-3-
fluoroallyloxy)-N-tert-butyl- 3-fluorobenzamide 20 ##STR00034##
(Z)-4-(2-(Aminomethyl)-3- fluoroallyloxy)-3-bromo-
N,N-dimethylbenzamide 21 ##STR00035## (E)-4-(2-(Aminomethyl)-3-
fluoroallyloxy)-N-tert-butyl- 2-(trifluoromethyl)benzamide 22
##STR00036## (E)-4-(2-(Aminomethyl)-3- chloroallyloxy)-N-tert-
butylbenzamide 23 ##STR00037## (E)-4-(2-(Aminomethyl)-3-
fluoroallyloxy)-N-tert- butylbenzamide 24 ##STR00038##
(E)-4-(2-(Aminomethyl)-3- fluoroallyloxy)-N,N- diethylbenzamide 25
##STR00039## (E)-4-(2-(Aminomethyl)-3- fluoroallyloxy)-N-methyl-
benzamide 26 ##STR00040## (Z)-4-(2-(Aminomethyl)-3-
fluoroallyloxy)-N,N,2- trimethylbenzamide 27 ##STR00041##
(Z)-4-(2-(Aminomethyl)- 3-chloroallyloxy)-N-tert- butylbenzamide 28
##STR00042## (E)-4-(2-(Aminomethyl)- 3-fluoroallyloxy)-N-
methylbenzenesulfonamide 29 ##STR00043## (Z)-4-(2-(Aminomethyl)-
3-fluoroallyloxy)-N- methylbenzenesulfonamide 30 ##STR00044##
(E)-4-(2-(Aminomethyl)- 3-fluoroallyloxy)-N-
ethylbenzenesulfonamide 31 ##STR00045## (Z)-4-(2-(Aminomethyl)-
3-fluoroallyloxy)-N- ethylbenzenesulfonamide 32 ##STR00046##
(E)-4-(2-(Aminomethyl)- 3-fluoroallyloxy)-N-
isopropylbenzenesulfonamide 33 ##STR00047## (Z)-4-(2-(Aminomethyl)-
3-fluoroallyloxy)-N- isopropylbenzenesulfonamide 34 ##STR00048##
(Z)-4-(3-(Aminomethyl)-4- fluorobut-3-enyl)-N-tert- butylbenzamide
35 ##STR00049## (Z)-4-(2-(Aminomethyl)-3-
fluoroallyloxy)-N-ethyl-N- methylbenzamide 36 ##STR00050##
(Z)-4-(2-(Aminomethyl)-3- fluoroallyloxy)-N-sec-butyl-
N-methylbenzamide 37 ##STR00051## (Z)-4-(2-(Aminomethyl)-3-
fluoroallyloxy)-N-tert-butyl- N-methylbenzenesulfonamide 38
##STR00052## (Z)-4-(2-(Aminomethyl)-3- fluoroallyloxy)-N-isopropyl-
N-methylbenzenesulfonamide 39 ##STR00053##
(E)-4-(2-(Aminomethyl)-3- fluoroallyloxy)-N- isopropylbenzamide
or a pharmaceutically acceptable salt or solvate thereof.
[0113] Preparation of Compounds of Formula I
[0114] The compounds of the invention can be prepared in a variety
of ways, such as, for example, procedures described in U.S. Pat.
No. 4,454,158; U.S. Pat. No. 4,699,928; and U.S. Pat. No.
4,650,907.
[0115] An alternate route to prepare compounds described by Formula
I in which X=O or S employs the synthetic protocol described in
Scheme 1, below. This is similar to procedures described in WO
2007/120528.
##STR00054##
wherein R.sup.2, R.sup.3, X and R.sup.5 are as defined herein;
P.sub.1 is a functional group used to protect a nitrogen
functionality; and LG is a leaving group. Examples of P.sub.1 are
carbonates such as the tert-butyloxycarbonyl (BOC), the
9-fluorenylmethyloxy-carbonyl (FMOC), and the benzyloxycarbonyl
(CBZ) groups; examples of LG are bromo, chloro, iodo, triflates,
tosylates, mesylates, and ester groups.
[0116] A compound represented by Formula III is either directly
used in a displacement reaction (Method A), such as a Mitsunobu
reaction, to yield the compound represented by Formula IV, or is
first converted to a compound represented by Formula V which
contains a leaving group (LG), such as bromide, chloride or iodide,
by procedures well known in the art (Method B). Alternatively that
alcohol can be directly activated with the tosyl
protecting/activating group (P.sub.2=Tosyl in Scheme 2, Formula
VIII; see below). The activated compound described by Formula V is
then treated with a nucleophilic reagent to furnish the compound
represented by Formula IV (Method C).
[0117] The Mitsunobu reaction conditions are well described in the
scientific and patent literature (available on the world wide web
at en.wikipedia.org/wiki/Mitsunobureaction, and Mitsunobu, O. The
use of diethyl azodicarboxylate and triphenylphosphine in synthesis
and transformation of natural products. Synthesis 1981, 1-28) and
proceed by contacting an alcohol with an appropriately substituted
phenolic or thiophenolic group, or a substituted phthalimide in the
presence of a dialkyl azodicarboxylate and triphenylphosphine in an
organic solvent such as tetrahydrofuran (THF) or CH2C12
(CH.sub.2Cl.sub.2).
[0118] Conversion of the alcohol group in Formula III to the
corresponding bromide, chloride or iodide is accomplished by any
number of commonly used procedures (See, for example, March J.
Advanced Organic Synthesis, John Wiley & Sons, Third Edition
1985), including treatment with PBr.sub.3 in toluene or CBr.sub.4
and triphenylphosphine in an organic solvent such as
CH.sub.2Cl.sub.2. The resulting halide can be treated with
nucleophiles such as substituted alcohols, phenols, amines, or
thiols to afford the compound represented by Formula IV.
[0119] There are many well established chemical procedures for the
deprotection of the compounds described by Formula IV to the
inventive compounds described by Formula I (Method J; see Scheme
2). For example if P.sub.1 is a BOC protecting group, compounds
described by Formula IV can be treated with an acidic substance
such as dry hydrogen chloride in a solvent such as diethyl ether to
furnish the compounds described by Formula I as the hydrochloride
salt. In general, the free amino compounds are converted to acid
addition salts for ease of handling and for improved chemical
stability. Examples of acid addition salts include but are not
limited to hydrochloride, hydrobromide and methanesulfonate
salts.
##STR00055##
[0120] The preparation of compounds described by Formula III is
straightforward from either commercially available or readily
accessible aminodiol illustrated by Formula VI (See Scheme 3).
##STR00056##
[0121] The first step is selective protection of the primary amine,
preferably as the tert-butyl carbamate (BOC) (P.sub.1=BOC in
Formula VII), followed by selective protection of the primary
alcohol to afford the alcohol described by Formula IX. Selective
protection methods (Method E) are well known in the art of
synthetic chemistry. For example, the primary alcohol can be
selectively reacted with tent-butyl-(chloro)dimethylsilane in the
presence of imizadole to furnish the tent-butyldimethylsilyl
protected alcohol (Formula VII). Oxidation of the secondary alcohol
is best achieved under Swern oxidation conditions (Method F)
resulting in the ketone represented by Formula VIII. The haloalkene
functional group in Formula X is introduced by Wittig or
Homer-Wadsworth-Emmons reaction. When R.sup.2 and R.sup.3 are F and
H in the structure described by Formula I, reaction of the ketone
described by Formula VIII with fluoromethyl (triphenyl)phosphonium
tetrafluoroborate in the presence of a strong base such as sodium
bis(trimethylsilyl) amide affords the fluoroalkene as a mixture of
E and Z isomers (described by Formula X). These isomers can be
separated by chromatographic procedures to afford the individual E
and Z isomers. Removal of the protecting group in the compounds
described by Formula X can be readily achieved (Method H). The
choice of the deprotecting reagent is determined by the nature of
the protecting groups P.sub.1 and P.sub.2. When P.sub.2 is
tert-butyldimethylsilyl and Pi is the BOC group, selective removal
of P.sub.2 is achieved with TBAF to yield the alcohol described by
Formula III.
[0122] Therapeutic Uses and Formulations
[0123] The present invention provides methods for the use of
compounds described by Formulae I and II to inhibit membrane-bound
SSAO/VAP-1 and soluble SSAO/VAP-1. The relative inhibitory
potencies of the compounds can be determined by the amount needed
to inhibit the amine oxidase activity of SSAO/VAP-1 in a variety of
ways, e.g., in an in vitro assay with recombinant human protein or
with recombinant non-human enzyme, in cellular assays expressing
normal rodent enzyme, in cellular assays which have been
transfected with human protein, in in vivo tests in rodent and
other mammalian species, and the like.
[0124] The present invention also discloses methods to use the
compounds described by Formulae I and II to inhibit SSAO/VAP-1 in
patients suffering from an inflammatory disease, and methods to
treat inflammatory diseases. Human inflammatory diseases include
arthritis, Crohn's disease, irritable bowel disease, psoriasis,
asthma, chronic pulmonary obstructive disease, bronchiectasis,
arthrosclerosis, inflammation due to diabetes, and inflammatory
cell destruction following stroke.
[0125] Thus, in one aspect, the present invention is directed to
methods of inhibiting an amine oxidase enzyme in a subject in need
thereof, said methods comprising administering to said subject an
effective amount of a compound of Formula I or Formula II to effect
a positive therapeutic response.
[0126] In another aspect, the present invention is directed to
methods of treating a disease associated with an amine oxidase
enzyme, said methods comprising administering to a subject in need
thereof a therapeutically effective amount of a compound of Formula
I or Formula II.
[0127] In still another aspect, the present invention is directed
to methods of treating a disease modulated by SSAO/VAP-1, said
methods comprising administering to a subject in need thereof a
therapeutically effective amount of a compound of Formula I or
Formula II.
[0128] The above-described methods are applicable wherein the
disease is inflammation. As employed herein, "inflammation"
embraces a wide variety of indications, including arthritis
(including juvenile rheumatoid arthritis), Crohn's disease,
ulcerative colitis, inflammatory bowel diseases (e.g., irritable
bowel disease), psoriasis, asthma, pulmonary inflammation, chronic
pulmonary obstructive disease (COPD), bronchiectasis, skin
inflammation, ocular disease, contact dermatitis, liver
inflammation, liver autoimmune diseases, autoimmune hepatitis,
primary biliary cirrhosis, sclerosing cholangitis, autoimmune
cholangitis, alcoholic liver disease, artherosclerosis, chronic
heart failure, congestive heart failure, ischemic diseases, stroke
and complications thereof, myocardial infarction and complications
thereof, inflammatory cell destruction following stroke, synovitis,
systemic inflammatory sepsis, and the like.
[0129] The above-described methods are also applicable wherein the
disease is Type I diabetes and complications thereof, Type II
diabetes and complications thereof, and the like.
[0130] The above described methods are also applicable wherein the
disease is macular degeneration or other ocular diseases.
[0131] The above described methods are also applicable wherein the
disease is fibrosis. As employed here "fibrosis" includes such
diseases as cystic fibrosis, idiopathic pulmonary fibrosis, liver
fibrosis, including non-alcoholic fatty liver diseases such as
non-alcoholic steatohepatitis (NASH) and alcohol induced fibrosis
leading to cirrhosis of the liver, kidney fibrosis, scleroderma,
radiation-induced fibrosis and other diseases where excessive
fibrosis contributes to disease pathology.
[0132] The above-described methods are also applicable wherein the
disease is a neuroinflammatory disease. As employed herein,
"neuroinflammatory diseases" embrace a variety of indications,
including stroke, Parkinson's disease, Alzheimer's disease,
vascular dementia, multiple sclerosis, chronic multiple sclerosis,
and the like.
[0133] The above-described methods are also applicable wherein the
disease is cancer. In one embodiment the cancer is selected from
the group consisting of lung cancer; breast cancer; colorectal
cancer; anal cancer; pancreatic cancer; prostate cancer; ovarian
carcinoma; liver and bile duct carcinoma; esophageal carcinoma;
non-Hodgkin's lymphoma; bladder carcinoma; carcinoma of the uterus;
glioma, glioblastoma, medullablastoma, and other tumors of the
brain; kidney cancer; cancer of the head and neck; cancer of the
stomach; multiple myeloma; testicular cancer; germ cell tumor;
neuroendocrine tumor; cervical cancer; carcinoids of the
gastrointestinal tract, breast, and other organs; signet ring cell
carcinoma; mesenchymal tumors including sarcomas, fibrosarcomas,
haemangioma, angiomatosis, haemangiopericytoma, pseudoangiomatous
stromal hyperplasia, myofibroblastoma, fibromatosis, inflammatory
myofibroblastic tumour, lipoma, angiolipoma, granular cell tumour,
neurofibroma, schwannoma, angiosarcoma, liposarcoma,
rhabdomyosarcoma, osteosarcoma, leiomyoma or a leiomysarcoma.
[0134] Pharmaceutical and/or Therapeutic Formulations
[0135] In another embodiment of the present invention, there are
provided compositions comprising a compound having Formula I or
Formula II and at least one pharmaceutically acceptable excipient,
carrier or diluent therefor. The compounds of Formula I may also be
present as suitable salts, including pharmaceutically acceptable
salts.
[0136] The phrase "pharmaceutically acceptable carrier" refers to
any carrier known to those skilled in the art to be suitable for
the particular mode of administration. In addition, the compounds
may be formulated as the sole pharmaceutically active ingredient in
the composition or may be combined with other active
ingredients.
[0137] The phrase "pharmaceutically acceptable salt" refers to any
salt preparation that is appropriate for use in a pharmaceutical
application. By pharmaceutically acceptable salt it is meant those
salts which, within the scope of sound medical judgement, are
suitable for use in contact with the tissues of humans and lower
animals without undue toxicity, irritation, allergic response and
the like, and are commensurate with a reasonable benefit/risk
ratio. Pharmaceutically acceptable salts are well known in the art
and include acid addition and base salts. Hemisalts of acids and
bases may also be formed. Pharmaceutically-acceptable salts include
amine salts of mineral acids (e.g., hydrochlorides, hydrobromides,
sulfates, and the like); and amine salts of organic acids (e.g.,
formates, acetates, lactates, malates, tartrates, citrates,
ascorbates, succinates, maleates, butyrates, valerates, fumarates,
and the like).
[0138] For compounds of formula (I) having a basic site, suitable
pharmaceutically acceptable salts may be acid addition salts. For
example, suitable pharmaceutically acceptable salts of such
compounds may be prepared by mixing a pharmaceutically acceptable
acid such as hydrochloric acid, sulfuric acid, methanesulfonic
acid, succinic acid, fumaric acid, maleic acid, benzoic acid,
phosphoric acid, acetic acid, oxalic acid, carbonic acid, tartaric
acid, or citric acid with the compounds of the invention.
[0139] S. M. Berge et al. describe pharmaceutically acceptable
salts in detail in J. Pharmaceutical Sciences, 1977, 66:1-19. The
salts can be prepared in situ during the final isolation and
purification of the compounds of the invention, or separately by
reacting the free base function with a suitable organic acid.
Representative acid addition salts include acetate, adipate,
alginate, ascorbate, asparate, benzenesulfonate, benzoate,
bisulfate, borate, butyrate, camphorate, camphorsulfonate, citrate,
digluconate, cyclopentanepropionate, dodecylsulfate,
ethanesulfonate, fumarate, glucoheptonate, glycerophosphate,
hemisulfate, heptonate, hexanoate, hydrobromide, hydrochloride,
hydroiodide, 2-hydroxy-ethanesulfonate, lactobionate, lactate,
laurate, lauryl sulfate, malate, maleate, malonate,
methanesulfonate, 2-naphthalenesulfonate, nicotinate, nitrate,
oleate, oxalate, palmitate, pamoate, pectinate, persulfate,
3-phenylpropionate, phosphate, picrate, pivalate, propionate,
stearate, succinate, sulfate, tartrate, thiocyanate,
toluenesulfonate, undecanoate, valerate salts, and the like.
Suitable base salts are formed from bases that form non-toxic
salts. Examples include the aluminium, arginine, benzathine,
calcium, choline, diethylamine, diolamine, glycine, lysine,
magnesium, meglumine, olamine, potassium, sodium, tromethamine and
zinc salts. Representative alkali or alkaline earth metal salts
include sodium, lithium potassium, calcium, magnesium, and the
like, as well as non-toxic ammonium, quaternary ammonium, and amine
cations, including, but not limited to ammonium,
tetramethylammonium, tetraethylammonium, methylamine,
dimethylamine, trimethylamine, triethylamine, ethylamine,
triethanolamine and the like.
[0140] Pharmaceutically acceptable salts of compounds of formula I
may be prepared by methods known to those skilled in the art,
including for example
[0141] i. by reacting the compound of formula I with the desired
acid or base;
[0142] ii. by removing an acid- or base-labile protecting group
from a suitable precursor of the compound of formula I or by
ring-opening a suitable cyclic precursor, for example, a lactone or
lactam, using the desired acid or base; or
[0143] iii. by converting one salt of the compound of formula I to
another by reaction with an appropriate acid or base or by means of
a suitable ion exchange column.
[0144] The above reactions (i)-(iii) are typically carried out in
solution. The resulting salt may precipitate out and be collected
by filtration or may be recovered by evaporation of the solvent.
The degree of ionisation in the resulting salt may vary from
completely ionised to almost non-ionised.
[0145] Thus, for instance, suitable pharmaceutically acceptable
salts of compounds according to the present invention may be
prepared by mixing a pharmaceutically acceptable acid such as
hydrochloric acid, sulfuric acid, methanesulfonic acid, succinic
acid, fumaric acid, maleic acid, benzoic acid, phosphoric acid,
acetic acid, oxalic acid, carbonic acid, tartaric acid, or citric
acid with the compounds of the invention. Suitable pharmaceutically
acceptable salts of the compounds of the present invention
therefore include acid addition salts.
[0146] The compounds of the invention may exist in both unsolvated
and solvated forms. The term `solvate` is used herein to describe a
molecular complex comprising the compound of the invention and a
stoichiometric amount of one or more pharmaceutically acceptable
solvent molecules, for example, ethanol. The term `hydrate` is
employed when the solvent is water.
[0147] In one embodiment the compounds of Formula I may be
administered in the form of a "prodrug". The phrase "prodrug"
refers to a compound that, upon in vivo administration, is
metabolized by one or more steps or processes or otherwise
converted to the biologically, pharmaceutically or therapeutically
active form of the compound. Prodrugs can be prepared by modifying
functional groups present in the compound in such a way that the
modifications are cleaved, either in routine manipulation or in
vivo, to a compound described herein. For example, prodrugs include
compounds of the present invention wherein a hydroxy, amino, or
sulfhydryl group is bonded to any group that, when administered to
a mammalian subject, can be cleaved to form a free hydroxyl, free
amino, or free sulfhydryl group, respectively. Representative
prodrugs include, for example, amides, esters, enol ethers, enol
esters, acetates, formates, benzoate derivatives, and the like of
alcohol and amine functional groups in the compounds of the present
invention. By virtue of knowledge of pharmacodynamic processes and
drug metabolism in vivo, those of skill in this art, once a
pharmaceutically active compound is known, can design prodrugs of
the compound (see, e.g., Nogrady (1985) Medicinal Chemistry A
Biochemical Approach, Oxford University Press, New York, pages
388-392).
[0148] Compositions herein comprise one or more compounds provided
herein. The compounds are, in one embodiment, formulated into
suitable pharmaceutical preparations such as solutions,
suspensions, tablets, dispersible tablets, pills, capsules,
powders, sustained release formulations or elixirs, for oral
administration or in sterile solutions or suspensions for
parenteral administration, as well as transdermal patch preparation
and dry powder inhalers. In one embodiment, the compounds described
above are formulated into pharmaceutical compositions using
techniques and procedures well known in the art (see, e.g., Ansel
Introduction to Pharmaceutical Dosage Forms, Fourth Edition 1985,
126).
[0149] In the compositions, effective concentrations of one or more
compounds or pharmaceutically acceptable derivatives thereof is
(are) mixed with a suitable pharmaceutical carrier. The compounds
may be derivatized as the corresponding salts, esters, enol ethers
or esters, acetals, ketals, orthoesters, hemiacetals, hemiketals,
acids, bases, solvates, hydrates or prodrugs prior to formulation,
as described above. The concentrations of the compounds in the
compositions are effective for delivery of an amount, upon
administration, that treats, prevents, or ameliorates one or more
of the symptoms of diseases or disorders to be treated.
[0150] In one embodiment, the compositions are formulated for
single dosage administration. To formulate a composition, the
weight fraction of compound is dissolved, suspended, dispersed or
otherwise mixed in a selected carrier at an effective concentration
such that the treated condition is relieved, prevented, or one or
more symptoms are ameliorated.
[0151] The active compound is included in the pharmaceutically
acceptable carrier in an amount sufficient to exert a
therapeutically useful effect in the absence of undesirable side
effects on the patient treated. The therapeutically effective
concentration may be determined empirically by testing the
compounds in in vitro and in vivo systems described herein and in
PCT publication WO 04/018997, and then extrapolated therefrom for
dosages for humans.
[0152] The concentration of active compound in the pharmaceutical
composition will depend on absorption, inactivation and excretion
rates of the active compound, the physicochemical characteristics
of the compound, the dosage schedule, and amount administered as
well as other factors known to those of skill in the art.
[0153] In one embodiment, a therapeutically effective dosage should
produce a serum concentration of active ingredient of from about
0.1 ng/mL to about 50-100 .mu.g/mL. The pharmaceutical
compositions, in another embodiment, should provide a dosage of
from about 0.001 mg to about 2000 mg of compound per kilogram of
body weight per day. Pharmaceutical dosage unit forms are prepared
to provide from about 0.01 mg, 0.1 mg or 1 mg to about 500 mg, 1000
mg or 2000 mg, and in one embodiment from about 10 mg to about 500
mg of the active ingredient or a combination of essential
ingredients per dosage unit form.
[0154] Dosing may occur at intervals of minutes, hours, days,
weeks, months or years or continuously over any one of these
periods. Suitable dosages lie within the range of about 0.1 ng per
kg of body weight to 1 g per kg of body weight per dosage. The
dosage is preferably in the range of 1 .mu.g to 1 g per kg of body
weight per dosage, such as is in the range of 1 mg to 1 g per kg of
body weight per dosage. Suitably, the dosage is in the range of 1
.mu.g to 500 .mu.g per kg of body weight per dosage, such as 1
.mu.g to 200 mg per kg of body weight per dosage, or 1 .mu.g to 100
mg per kg of body weight per dosage. Other suitable dosages may be
in the range of 1 mg to 250 mg per kg of body weight, including 1
mg to 10, 20, 50 or 100 mg per kg of body weight per dosage or 10
.mu.g to 100mg per kg of body weight per dosage.
[0155] Suitable dosage amounts and dosing regimens can be
determined by the attending physician and may depend on the
particular condition being treated, the severity of the condition,
as well as the general health, age and weight of the subject.
[0156] The active ingredient may be administered at once, or may be
divided into a number of smaller doses to be administered at
intervals of time. It is understood that the precise dosage and
duration of treatment is a function of the disease being treated
and may be determined empirically using known testing protocols or
by extrapolation from in vivo or in vitro test data. It is to be
noted that concentrations and dosage values may also vary with the
severity of the condition to be alleviated. It is to be further
understood that for any particular subject, specific dosage
regimens should be adjusted over time according to the individual
need and the professional judgment of the person administering or
supervising the administration of the compositions, and that the
concentration ranges set forth herein are exemplary only and are
not intended to limit the scope or practice of the claimed
compositions.
[0157] In instances in which the compounds exhibit insufficient
solubility, methods for solubilizing compounds may be used. Such
methods are known to those of skill in this art, and include, but
are not limited to, using co-solvents, such as dimethylsulfoxide
(DMSO), using surfactants, such as TWEEN.RTM., dissolution in
aqueous sodium bicarbonate, formulating the compounds of interest
as nanoparticles, and the like. Derivatives of the compounds, such
as prodrugs of the compounds may also be used in formulating
effective pharmaceutical compositions.
[0158] Upon mixing or addition of the compound(s), the resulting
mixture may be a solution, suspension, emulsion or the like. The
form of the resulting mixture depends upon a number of factors,
including the intended mode of administration and the solubility of
the compound in the selected carrier or vehicle. The effective
concentration is sufficient for ameliorating the symptoms of the
disease, disorder or condition treated and may be empirically
determined.
[0159] The pharmaceutical compositions are provided for
administration to humans and animals in unit dosage forms, such as
tablets, capsules, pills, powders, granules, sterile parenteral
solutions or suspensions, and oral solutions or suspensions, and
oil-water emulsions containing suitable quantities of the compounds
or pharmaceutically acceptable derivatives thereof. The
pharmaceutically therapeutically active compounds and derivatives
thereof are, in one embodiment, formulated and administered in
unit-dosage forms or multiple-dosage forms. Unit-dose forms as used
herein refers to physically discrete units suitable for human and
animal subjects and packaged individually as is known in the art.
Each unit-dose contains a predetermined quantity of the
therapeutically active compound sufficient to produce the desired
therapeutic effect, in association with the required pharmaceutical
carrier, vehicle or diluent. Examples of unit-dose forms include
ampoules and syringes and individually packaged tablets or
capsules. Unit-dose forms may be administered in fractions or
multiples thereof. A multiple-dose form is a plurality of identical
unit-dosage forms packaged in a single container to be administered
in segregated unit-dose form. Examples of multiple-dose forms
include vials, bottles of tablets or capsules or bottles of pints
or gallons. Hence, multiple dose form is a multiple of unit-doses
which are not segregated in packaging.
[0160] Actual methods of preparing such dosage forms are known, or
will be apparent, to those skilled in this art; for example, see
Remington's Pharmaceutical Sciences, Mack Publishing Company,
Easton, Pa., 15th Edition, 1975.
[0161] Dosage forms or compositions containing active ingredient in
the range of 0.005% to 100% (wt %) with the balance made up from
non-toxic carrier may be prepared. Methods for preparation of these
compositions are known to those skilled in the art. The
contemplated compositions may contain 0.001%-100% (wt %) active
ingredient, in one embodiment 0.1-95% (wt %), in another embodiment
75-85% (wt %).
[0162] Modes of Administration
[0163] Convenient modes of administration include injection
(subcutaneous, intravenous, etc.), oral administration, inhalation,
transdermal application, topical creams or gels or powders, vaginal
or rectal administration. Depending on the route of administration,
the formulation and/or compound may be coated with a material to
protect the compound from the action of enzymes, acids and other
natural conditions which may inactivate the therapeutic activity of
the compound. The compound may also be administered parenterally or
intraperitoneally.
[0164] Compositions For Oral Administration
[0165] Oral pharmaceutical dosage forms are either solid, gel or
liquid. The solid dosage forms are tablets, capsules, granules, and
bulk powders. Types of oral tablets include compressed, chewable
lozenges and tablets which may be enteric-coated, sugar-coated or
film-coated. Capsules may be hard or soft gelatin capsules, while
granules and powders may be provided in non-effervescent or
effervescent form with the combination of other ingredients known
to those skilled in the art.
[0166] Solid Compositions For Oral Administration
[0167] In certain embodiments, the formulations are solid dosage
forms, in one embodiment, capsules or tablets. The tablets, pills,
capsules, troches and the like can contain one or more of the
following ingredients, or compounds of a similar nature: a binder;
a lubricant; a diluent; a glidant; a disintegrating agent; a
colouring agent; a sweetening agent; a flavouring agent; a wetting
agent; an emetic coating; and a film coating. Examples of binders
include microcrystalline cellulose, gum tragacanth, glucose
solution, acacia mucilage, gelatin solution, molasses,
polvinylpyrrolidine, povidone, crospovidones, sucrose and starch
paste. Lubricants include talc, starch, magnesium or calcium
stearate, lycopodium and stearic acid. Diluents include, for
example, lactose, sucrose, starch, kaolin, salt, mannitol and
dicalcium phosphate. Glidants include, but are not limited to,
colloidal silicon dioxide. Disintegrating agents include
crosscarmellose sodium, sodium starch glycolate, alginic acid, corn
starch, potato starch, bentonite, methylcellulose, agar and
carboxymethylcellulose. Coloring agents include, for example, any
of the approved certified water soluble FD and C dyes, mixtures
thereof; and water insoluble FD and C dyes suspended on alumina
hydrate. Sweetening agents include sucrose, lactose, mannitol and
artificial sweetening agents such as saccharin, and any number of
spray dried flavours. Flavouring agents include natural flavours
extracted from plants such as fruits and synthetic blends of
compounds which produce a pleasant sensation, such as, but not
limited to peppermint and methyl salicylate. Wetting agents include
propylene glycol monostearate, sorbitan monooleate, diethylene
glycol monolaurate and polyoxyethylene laural ether.
Emetic-coatings include fatty acids, fats, waxes, shellac,
ammoniated shellac and cellulose acetate phthalates. Film coatings
include hydroxyethylcellulose, sodium carboxymethylcellulose,
polyethylene glycol 4000 and cellulose acetate phthalate.
[0168] The compound, or pharmaceutically acceptable derivative
thereof, could be provided in a composition that protects it from
the acidic environment of the stomach. For example, the composition
can be formulated in an enteric coating that maintains its
integrity in the stomach and releases the active compound in the
intestine. The composition may also be formulated in combination
with an antacid or other such ingredient.
[0169] When the dosage unit form is a capsule, it can contain, in
addition to material of the above type, a liquid carrier such as a
fatty oil. In addition, dosage unit forms can contain various other
materials which modify the physical form of the dosage unit, for
example, coatings of sugar and other enteric agents. The compounds
can also be administered as a component of an elixir, suspension,
syrup, wafer, sprinkle, chewing gum or the like. A syrup may
contain, in addition to the active compounds, sucrose as a
sweetening agent and certain preservatives, dyes and colourings and
flavours.
[0170] The active materials can also be mixed with other active
materials which do not impair the desired action, or with materials
that supplement the desired action, such as antacids, H2 blockers,
and diuretics. The active ingredient is a compound or
pharmaceutically acceptable derivative thereof as described herein.
Higher concentrations, up to about 98% by weight of the active
ingredient may be included.
[0171] In all embodiments, tablets and capsules formulations may be
coated as known by those of skill in the art in order to modify or
sustain dissolution of the active ingredient. Thus, for example,
they may be coated with a conventional enterically digestible
coating, such as phenylsalicylate, waxes and cellulose acetate
phthalate.
[0172] Liquid Compositions For Oral Administration
[0173] Liquid oral dosage forms include aqueous solutions,
emulsions, suspensions, solutions and/or suspensions reconstituted
from non-effervescent granules and effervescent preparations
reconstituted from effervescent granules. Aqueous solutions
include, for example, elixirs and syrups. Emulsions are either
oil-in-water or water-in-oil.
[0174] Liquid pharmaceutically administrable compositions can, for
example, be prepared by dissolving, dispersing, or otherwise mixing
an active compound as defined above and optional pharmaceutical
adjuvants in a carrier, such as, for example, water, saline,
aqueous dextrose, glycerol, glycols, ethanol, and the like, to
thereby form a solution or suspension. If desired, the
pharmaceutical composition to be administered may also contain
minor amounts of nontoxic auxiliary substances such as wetting
agents, emulsifying agents, solubilizing agents, pH buffering
agents and the like, for example, acetate, sodium citrate,
cyclodextrine derivatives, sorbitan monolaurate, triethanolamine
sodium acetate, triethanolamine oleate, and other such agents.
[0175] Elixirs are clear, sweetened, hydroalcoholic preparations.
Pharmaceutically acceptable carriers used in elixirs include
solvents. Syrups are concentrated aqueous solutions of a sugar, for
example, sucrose, and may contain a preservative. An emulsion is a
two-phase system in which one liquid is dispersed in the form of
small globules throughout another liquid. Pharmaceutically
acceptable carriers used in emulsions are non-aqueous liquids,
emulsifying agents and preservatives. Suspensions use
pharmaceutically acceptable suspending agents and preservatives.
Pharmaceutically acceptable substances used in non-effervescent
granules, to be reconstituted into a liquid oral dosage form,
include diluents, sweeteners and wetting agents. Pharmaceutically
acceptable substances used in effervescent granules, to be
reconstituted into a liquid oral dosage form, include organic acids
and a source of carbon dioxide. Colouring and flavouring agents are
used in all of the above dosage forms.
[0176] Solvents include glycerin, sorbitol, ethyl alcohol and
syrup. Examples of preservatives include glycerin, methyl and
propylparaben, benzoic acid, sodium benzoate and alcohol. Examples
of non-aqueous liquids utilized in emulsions include mineral oil
and cottonseed oil. Examples of emulsifying agents include gelatin,
acacia, tragacanth, bentonite, and surfactants such as
polyoxyethylene sorbitan monooleate. Suspending agents include
sodium carboxymethylcellulose, pectin, tragacanth, Veegum and
acacia. Sweetening agents include sucrose, syrups, glycerin and
artificial sweetening agents such as saccharin. Wetting agents
include propylene glycol monostearate, sorbitan monooleate,
diethylene glycol monolaurate and polyoxyethylene lauryl ether.
Organic acids include citric and tartaric acid. Sources of carbon
dioxide include sodium bicarbonate and sodium carbonate. Colouring
agents include any of the approved certified water soluble FU and C
dyes, and mixtures thereof. Flavouring agents include natural
flavours extracted from plants such fruits, and synthetic blends of
compounds which produce a pleasant taste sensation.
[0177] For a solid dosage form, the solution or suspension, in for
example propylene carbonate, vegetable oils or triglycerides, is in
one embodiment encapsulated in a gelatin capsule. Such solutions,
and the preparation and encapsulation thereof, are disclosed in
U.S. Patent Nos. 4,328,245; 4,409,239; and 4,410,545. For a liquid
dosage form, the solution, e.g., for example, in a polyethylene
glycol, may be diluted with a sufficient quantity of a
pharmaceutically acceptable liquid carrier, e.g., water, to be
easily measured for administration.
[0178] Alternatively, liquid or semi-solid oral formulations may be
prepared by dissolving or dispersing the active compound or salt in
vegetable oils, glycols, triglycerides, propylene glycol esters
(e.g., propylene carbonate) and other such carriers, and
encapsulating these solutions or suspensions in hard or soft
gelatin capsule shells. Other useful formulations include those set
forth in U.S. Patent Nos. RE28,819 and 4,358,603. Briefly, such
formulations include, but are not limited to, those containing a
compound provided herein, a dialkylated mono- or poly-alkylene
glycol, including, but not limited to, 1,2-dimethoxymethane,
diglyme, triglyme, tetraglyme, polyethylene glycol-350-dimethyl
ether, polyethylene glycol-550-dimethyl ether, polyethylene
glycol-750-dimethyl ether wherein 350, 550 and 750 refer to the
approximate average molecular weight of the polyethylene glycol,
and one or more antioxidants, such as butylated hydroxytoluene
(BHT), butylated hydroxyanisole (BHA), propyl gallate, vitamin E,
hydroquinone, hydroxycoumarins, ethanolamine, lecithin, cephalin,
ascorbic acid, malic acid, sorbitol, phosphoric acid,
thiodipropionic acid and its esters, and dithiocarbamates.
[0179] Other formulations include, but are not limited to, aqueous
alcoholic solutions including a pharmaceutically acceptable acetal.
Alcohols used in these formulations are any pharmaceutically
acceptable water-miscible solvents having one or more hydroxyl
groups, including, but not limited to, propylene glycol and
ethanol. Acetals include, but are not limited to, di(lower alkyl)
acetals of lower alkyl aldehydes such as acetaldehyde diethyl
acetal.
[0180] Injectables, Solutions and Emulsions
[0181] Parenteral administration, in one embodiment characterized
by injection, either subcutaneously, intramuscularly or
intravenously is also contemplated herein. Injectables can be
prepared in conventional forms, either as liquid solutions or
suspensions, solid forms suitable for solution or suspension in
liquid prior to injection, or as emulsions. The injectables,
solutions and emulsions also contain one or more excipients.
Suitable excipients are, for example, water, saline, dextrose,
glycerol or ethanol. In addition, if desired, the pharmaceutical
compositions to be administered may also contain minor amounts of
non-toxic auxiliary substances such as wetting or emulsifying
agents, pH buffering agents, stabilizers, solubility enhancers, and
other such agents, such as for example, sodium acetate, sorbitan
monolaurate, triethanolamine oleate and cyclodextrins.
[0182] Implantation of a slow-release or sustained-release system,
such that a constant level of dosage is maintained (see, e.g., U.S.
Pat. No. 3,710,795) is also contemplated herein. Briefly, a
compound provided herein is dispersed in a solid inner matrix,
e.g., polymethylmethacrylate, polybutylmethacrylate, plasticized or
unplasticized polyvinylchloride, plasticized nylon, plasticized
polyethyleneterephthalate, natural rubber, polyisoprene,
polyisobutylene, polybutadiene, polyethylene, ethylene-vinylacetate
copolymers, silicone rubbers, polydimethylsiloxanes, silicone
carbonate copolymers, hydrophilic polymers such as hydrogels of
esters of acrylic and methacrylic acid, collagen, cross-linked
polyvinylalcohol and cross-linked partially hydrolyzed polyvinyl
acetate, that is surrounded by an outer polymeric membrane, e.g.,
polyethylene, polypropylene, ethylene/propylene copolymers,
ethylene/ethyl acrylate copolymers, ethylene/vinylacetate
copolymers, silicone rubbers, polydimethyl siloxanes, neoprene
rubber, chlorinated polyethylene, polyvinylchloride, vinylchloride
copolymers with vinyl acetate, vinylidene chloride, ethylene and
propylene, ionomer polyethylene terephthalate, butyl rubber
epichlorohydrin rubbers, ethylene/vinyl alcohol copolymer,
ethylene/vinyl acetate/vinyl alcohol terpolymer, and
ethylene/vinyloxyethanol copolymer, that is insoluble in body
fluids. The compound diffuses through the outer polymeric membrane
in a release rate controlling step. The percentage of active
compound contained in such parenteral compositions is highly
dependent on the specific nature thereof, as well as the activity
of the compound and the needs of the subject.
[0183] Parenteral administration of the compositions includes
intravenous, subcutaneous and intramuscular administrations.
Preparations for parenteral administration include sterile
solutions ready for injection, sterile dry soluble products, such
as lyophilized powders, ready to be combined with a solvent just
prior to use, including hypodermic tablets, sterile suspensions
ready for injection, sterile dry insoluble products ready to be
combined with a vehicle just prior to use and sterile emulsions.
The solutions may be either aqueous or nonaqueous.
[0184] If administered intravenously, suitable carriers include
physiological saline or phosphate buffered saline (PBS), and
solutions containing thickening and solubilizing agents, such as
glucose, polyethylene glycol, and polypropylene glycol and mixtures
thereof.
[0185] Pharmaceutically acceptable carriers used in parenteral
preparations include aqueous vehicles, nonaqueous vehicles,
antimicrobial agents, isotonic agents, buffers, antioxidants, local
anesthetics, suspending and dispersing agents, emulsifying agents,
sequestering or chelating agents and other pharmaceutically
acceptable substances.
[0186] Examples of aqueous vehicles include Sodium Chloride
Injection, Ringers Injection, Isotonic Dextrose Injection, Sterile
Water Injection, Dextrose and Lactated Ringers Injection.
Nonaqueous parenteral vehicles include fixed oils of vegetable
origin, cottonseed oil, corn oil, sesame oil and peanut oil.
Antimicrobial agents in bacteriostatic or fungistatic
concentrations must be added to parenteral preparations packaged in
multiple-dose containers which include phenols or cresols,
mercurials, benzyl alcohol, chlorobutanol, methyl and propyl
p-hydroxybenzoic acid esters, thimerosal, benzalkonium chloride and
benzethonium chloride. Isotonic agents include sodium chloride and
dextrose. Buffers include phosphate and citrate. Antioxidants
include sodium bisulfate. Local anesthetics include procaine
hydrochloride. Suspending and dispersing agents include sodium
carboxymethylcelluose, hydroxypropyl methylcellulose and
polyvinylpyrrolidone. Emulsifying agents include Polysorbate 80
(TWEEN.RTM. 80). A sequestering or chelating agent of metal ions
including EDTA. Pharmaceutical carriers also include ethyl alcohol,
polyethylene glycol and propylene glycol for water miscible
vehicles; and sodium hydroxide, hydrochloric acid, citric acid or
lactic acid for pH adjustment.
[0187] The concentration of the pharmaceutically active compound is
adjusted so that an injection provides an effective amount to
produce the desired pharmacological effect. The exact dose depends
on the age, weight and condition of the patient or animal as is
known in the art.
[0188] The unit-dose parenteral preparations are packaged in an
ampoule, a vial or a syringe with a needle. All preparations for
parenteral administration must be sterile, as is known and
practiced in the art.
[0189] Illustratively, intravenous or intra-arterial infusion of a
sterile aqueous solution containing an active compound is an
effective mode of administration. Another embodiment is a sterile
aqueous or oily solution or suspension containing an active
material injected as necessary to produce the desired
pharmacological effect.
[0190] Injectables are designed for local and systemic
administration. In one embodiment, a therapeutically effective
dosage is formulated to contain a concentration of at least about
0.1% w/w up to about 90% w/w or more, in certain embodiments more
than 1% w/w of the active compound to the treated tissue(s).
[0191] The compound may be suspended in micronized or other
suitable form or may be derivatized to produce a more soluble
active product or to produce a prodrug. The form of the resulting
mixture depends upon a number of factors, including the intended
mode of administration and the solubility of the compound in the
selected carrier or vehicle. The effective concentration is
sufficient for ameliorating the symptoms of the condition and may
be empirically determined.
[0192] Lyophilized Powders
[0193] Of interest herein are also lyophilized powders, which can
be reconstituted for administration as solutions, emulsions and
other mixtures. They may also be reconstituted and formulated as
solids or gels.
[0194] The sterile, lyophilized powder is prepared by dissolving a
compound provided herein, or a pharmaceutically acceptable
derivative thereof, in a suitable solvent. The solvent may contain
an excipient which improves the stability or other pharmacological
component of the powder or reconstituted solution, prepared from
the powder. Excipients that may be used include, but are not
limited to, dextrose, sorbital, fructose, corn syrup, xylitol,
glycerin, glucose, sucrose or other suitable agent. The solvent may
also contain a buffer, such as citrate, sodium or potassium
phosphate or other such buffer known to those of skill in the art
at, in one embodiment, about neutral pH. Subsequent sterile
filtration of the solution followed by lyophilization under
standard conditions known to those of skill in the art provides the
desired formulation. In one embodiment, the resulting solution will
be apportioned into vials for lyophilization. Each vial will
contain a single dosage or multiple dosages of the compound. The
lyophilized powder can be stored under appropriate conditions, such
as at about 4.degree. C. to room temperature.
[0195] Reconstitution of this lyophilized powder with water for
injection provides a formulation for use in parenteral
administration. For reconstitution, the lyophilized powder is added
to sterile water or other suitable carrier. The precise amount
depends upon the selected compound. Such amount can be empirically
determined.
[0196] Topical Administration
[0197] Topical mixtures are prepared as described for the local and
systemic administration. The resulting mixture may be a solution,
suspension, emulsions or the like and are formulated as creams,
gels, ointments, emulsions, solutions, elixirs, lotions,
suspensions, tinctures, pastes, foams, aerosols, irrigations,
sprays, suppositories, bandages, dermal patches or any other
formulations suitable for topical administration.
[0198] The compounds or pharmaceutically acceptable derivatives
thereof may be formulated as aerosols for topical application, such
as by inhalation (see, e.g., U.S. Pat. Nos. 4,044,126, 4,414,209,
and 4,364,923, which describe aerosols for delivery of a steroid
useful for treatment of inflammatory diseases, particularly
asthma). These formulations for administration to the respiratory
tract can be in the form of an aerosol or solution for a nebulizer,
or as a microfine powder for insufflation, alone or in combination
with an inert carrier such as lactose. In such a case, the
particles of the formulation will, in one embodiment, have
diameters of less than 50 microns, in one embodiment less than 10
microns.
[0199] The compounds may be formulated for local or topical
application, such as for topical application to the skin and mucous
membranes, such as in the eye, in the form of gels, creams, and
lotions and for application to the eye or for intracisternal or
intraspinal application. Topical administration is contemplated for
transdermal delivery and also for administration to the eyes or
mucosa, or for inhalation therapies. Nasal solutions of the active
compound alone or in combination with other pharmaceutically
acceptable excipients can also be administered.
[0200] These solutions, particularly those intended for ophthalmic
use, may be formulated as 0.01% - 10% (vol %) isotonic solutions,
pH about 5-7, with appropriate salts.
[0201] Compositions For Other Routes of Administration
[0202] Other routes of administration, such as transdermal patches,
including iontophoretic and electrophoretic devices, and rectal
administration, are also contemplated herein.
[0203] Transdermal patches, including iontophoretic and
electrophoretic devices, are well known to those of skill in the
art. For example, such patches are disclosed in U.S. Pat. Nos.
6,267,983, 6,261,595, 6,256,533, 6,167,301, 6,024,975, 6,010715,
5,985,317, 5,983,134, 5,948,433, and 5,860,957.
[0204] For example, pharmaceutical dosage forms for rectal
administration are rectal suppositories, capsules and tablets for
systemic effect. Rectal suppositories are used herein mean solid
bodies for insertion into the rectum which melt or soften at body
temperature releasing one or more pharmacologically or
therapeutically active ingredients. Pharmaceutically acceptable
substances utilized in rectal suppositories are bases or vehicles
and agents to raise the melting point. Examples of bases include
cocoa butter (theobroma oil), glycerin-gelatin, carbowax
(polyoxyethylene glycol) and appropriate mixtures of mono-, di- and
triglycerides of fatty acids. Combinations of the various bases may
be used. Agents to raise the melting point of suppositories include
spermaceti and wax. Rectal suppositories may be prepared either by
the compressed method or by molding. The weight of a rectal
suppository, in one embodiment, is about 2 to 3 gm.
[0205] Tablets and capsules for rectal administration are
manufactured using the same pharmaceutically acceptable substance
and by the same methods as for formulations for oral
administration.
[0206] Targeted Formulations
[0207] The compounds provided herein, or pharmaceutically
acceptable derivatives thereof, may also be formulated to be
targeted to a particular tissue, receptor, or other area of the
body of the subject to be treated. Many such targeting methods are
well known to those of skill in the art. All such targeting methods
are contemplated herein for use in the instant compositions. For
non-limiting examples of targeting methods, see, e.g., U.S. Pat.
Nos. 6,316,652, 6,274,552, 6,271,359, 6,253,872, 6,139,865,
6,131,570, 6,120,751, 6,071,495, 6,060,082, 6,048,736, 6,039,975,
6,004,534, 5,985,307, 5,972,366, 5,900,252, 5,840,674, 5,759,542
and 5,709,874.
[0208] In one embodiment, liposomal suspensions, including
tissue-targeted liposomes, such as tumor-targeted liposomes, may
also be suitable as pharmaceutically acceptable carriers. These may
be prepared according to methods known to those skilled in the art.
For example, liposome formulations may be prepared as described in
U.S. Pat. No. 4,522,811. Briefly, liposomes such as multilamellar
vesicles (MLV's) may be formed by drying down egg phosphatidyl
choline and brain phosphatidyl serine (7:3 molar ratio) on the
inside of a flask. A solution of a compound provided herein in
phosphate buffered saline lacking divalent cations (PBS) is added
and the flask shaken until the lipid film is dispersed. The
resulting vesicles are washed to remove unencapsulated compound,
pelleted by centrifugation, and then resuspended in PBS.
[0209] Co-Administration With Other Drugs
[0210] In accordance with another aspect of the present invention,
it is contemplated that compounds as described herein may be
administered to a subject in need thereof in combination with
medication considered by those of skill in the art to be current
standard of care for the condition of interest. Such combinations
provide one or more advantages to the subject, e.g., requiring
reduced dosages to achieve similar benefit, obtaining the desired
palliative affect in less time, and the like.
[0211] Compounds in accordance with the present invention may be
administered as part of a therapeutic regimen with other drugs. It
may desirable to administer a combination of active compounds, for
example, for the purpose of treating a particular disease or
condition. Accordingly, it is within the scope of the present
invention that two or more pharmaceutical compositions, at least
one of which contains a compound of Formula (I) according to the
present invention, may be combined in the form of a kit suitable
for co-administration of the compositions.
[0212] In one embodiment of the methods of the present inventions a
compound of Formula I may be administered with a second therapeutic
agent. In one embodiment the second therapeutic agent is selected
from the group consisting of an anti-cancer agent, an
anti-inflammatory agent, an anti-hypertensive agent, an
anti-fibrotic agent, an anti-angiogenic agent, an anti-diabetic
agent, and an immunosuppressive agent.
[0213] When two or more active ingredients are co-administered, the
active ingredients may be administered simultaneously, sequentially
or separately. In one embodiment the compound of Formula I is
co-administered simultaneously with a second therapeutic agent. In
another embodiment the compound of Formula I and the second
therapeutic agent are administered sequentially. In a further
embodiment the compound of Formula I and the second therapeutic
agent are administered separately.
[0214] The invention will now be described in greater detail with
reference to the following non-limiting examples. The examples are
intended to serve to illustrate the invention and should not be
construed as limiting the generality of the disclosure of the
description throughout this specification.
EXAMPLE 1
[0215] Preparation of the synthons (Z)-tert-butyl
2-(bromomethyl)-3-fluoroallylcarbamate and (E)-tert-butyl
2-(bromomethyl)-3-fluoroallylcarbamate
##STR00057##
[0216] Preparation of tent-butyl
3-(tent-butyldimethylsilyloxy)-2-hydroxypropylcarbamate
##STR00058##
[0217] To a stirred solution of 3-amino-1,2-propanediol (10.0 g,
0.11 mol) and triethylamine (23 mL, 0.17 mol) in MeOH (200 mL) at
room temperature was added di-tert-butyl dicarbonate (26.4 g, 0.12
mol). The resulting solution was left to stir at room temperature
overnight. The reaction mixture was concentrated under reduced
pressure then co-evaporated with toluene to remove all the MeOH.
The crude residue was taken up in CH.sub.2Cl.sub.2 and, after
cooling to 0.degree. C., imidazole and
tert-butyl-(chloro)dimethylsilane were sequentially added. The
resulting mixture was left to stir at this temperature for 2 h. The
reaction mixture was partitioned between water (100 mL) and
CH.sub.2Cl.sub.2 (70 mL) and the aqueous layer was extracted with
further CH.sub.2Cl.sub.2 (2.times.70 mL). The combined organics
were dried over Na.sub.2SO.sub.4 and concentrated in vacuo. The
crude residue was purified over silica gel eluting with n-hexane
followed by 10% ethyl acetate in hexanes to afford tert-butyl
3-(tert-butyldimethylsilyloxy)-2-hydroxypropylcarbamate (32.6 g,
97.3%) as a colourless oil. .sup.1H-NMR (300 MHz, CDCl.sub.3)
.delta. ppm: 0.09 (6 H, s), 0.91 (9 H, s), 1.46 (9 H, s), 2.86 (1
H, br d, J 4.2 Hz), 3.13 (1 H, ddd, J 14.1, 6.7, 5.3 Hz), 3.30-3.43
(1 H, m), 3.54 (1 H, dd, J 10.1, 6.2 Hz), 3.66 (1 H, dd, J 10.1,
4.5 Hz), 3.70-3.80 (1 H, m), 4.98 (1 H, br s).
[0218] Preparation of tent-butyl
3-(tert-butyldimethylsilyloxy)-2-oxopropylcarbamate
##STR00059##
[0219] To a stirring solution of oxalyl chloride (13.6 mL, 0.16
mol) in dry CH.sub.2Cl.sub.2 (150 mL) at -78.degree. C. under
N.sub.2 was added DMSO (15.2 mL, 0.21 mol) dropwise over 30 min
After complete addition the resulting solution was stirred at
-78.degree. C. for 1 h. A solution of tent-butyl
3-(tert-butyldimethyl-silyloxy)-2-hydroxypropylcarbamate (32.6 g,
0.11 mol) in CH2Cl.sub.2 (50 mL) was then added dropwise over 20
min. Stirring was continued for a further 1 hour at which time
triethylamine (59.6 mL, 0.43 mol) was added. The cooling bath was
removed and the reaction mixture was allowed to warm to room
temperature. The reaction mixture was partitioned between water
(100 mL) and CH.sub.2Cl.sub.2 (70 mL) and the aqueous layer was
extracted with further CH.sub.2Cl.sub.2 (2.times.70 mL); the
combined organics were dried over Na.sub.2SO.sub.4 and concentrated
under a stream of nitrogen gas. The crude residue was purified over
silica gel eluting with 5% ethylacetate in n-hexane to give
tert-butyl 3-(tert-butyldimethylsilyloxy)-2-oxopropylcarbamate
(29.8 g, 92%) as a pale yellow oil. .sup.1H-NMR (300 MHz;
CDCl.sub.3) .delta. ppm: 0.11 (6 H, s), 0.94 (9 H, s), 1.47 (9 H,
s), 3.92 (2 H, s), 4.26 (2 H, d, J 4.6 Hz), 5.22 (1 H, br s).
[0220] Preparation of tent-butyl
2-((tent-butyldimethylsilyloxy)methyl)-3-fluoroallylcarbamate
##STR00060##
[0221] To a vigorously stirring suspension of
fluoromethyl(triphenyl)-phosphonium tetrafluoroborate (18.9 g, 49.4
mmol) in dry THF (190 mL) at -20.degree. C. under N.sub.2 was added
sodium bis(trimethylsilyl)amide (1.0 M in THF; 49.4 mL, 49.4 mmol)
slowly over 10 min. The resulting deep orange solution was left to
stir at this temperature for 15 min. A solution of tent-butyl
3-(tert-butyldimethylsilyloxy)-2-oxopropylcarbamate (10.0 g, 33.0
mmol) in THF (10 mL) was then added slowly over 10 min. After
complete addition, stirring was continued for a further 1 h during
which time the reaction was allowed to warm slowly to room
temperature. The reaction was quenched by addition of water (5 mL)
and the reaction mixture was concentrated in vacuo. The residue was
partitioned between water (100 mL) and diethyl ether (100 mL) and
the aqueous layer was extracted with further diethyl ether
(2.times.100 ml). The combined organics were dried over
Na.sub.2SO.sub.4 and concentrated under reduced pressure. The crude
residue was purified over silica gel eluting with n-hexane followed
by 6% ethylacetate in n-hexane to give tent-butyl
2-((tert-butyldimethylsilyloxy)methyl)-3-fluoroallylcarbamate as a
mixture of E/Z double-bond isomers (E/Z=1:1; 9.9 g, 94%). The
isomers were not separated at this stage.
[0222] Preparation of (E)-tert-butyl
3-fluoro-2-(hydroxymethyl)allylcarbamate and (Z)-tert-butyl
3-fluoro-2-(hydroxymethyl)allylcarbamate
##STR00061##
[0223] To a stirring solution of tent-butyl
2-((tert-butyldimethylsilyloxy)methyl)-3-fluoroallylcarbamate
(E/Z=1:1; 12.0 g, 37.6 mmol) in THF (30 mL) at room temperature was
added TBAF (1.0 M in THF; 45.1 mL, 45.1 mmol). The resulting
solution was left to stir for 30 min. The reaction mixture was
partitioned between water (70 mL) and ethyl acetate (50 mL). The
aqueous layer was extracted with ethyl acetate (50 mL) and the
combined organics were washed with saturated aqueous
NH.sub.4C.sub.1 (70 mL) followed by brine (70 mL). After drying
over Na.sub.2SO.sub.4, the organics were concentrated in vacuo.
Purification of the crude material over silica gel eluting with 20%
ethyl acetate and 5% THF in n-hexane gave (Z)-tert-butyl
3-fluoro-2-(hydroxymethyl)-allylcarbamate (0.5 g, 6.5%),
(E)-tert-butyl 3-fluoro-2-(hydroxymethyl)allylcarbamate (1.2 g,
15.6%) and a mixture of the E/Z isomers (5.5 g, 71.4%).
[0224] (Z)-tert-Butyl 3-fluoro-2-(hydroxymethyl)allylcarbamate:
.sup.1H-NMR (300 MHz; CDCl.sub.3) .delta. ppm: 1.46 (9 H, s), 3.41
(1 H, br s), 3.74 (2 H, dd, J 6.5, 3.1 Hz), 4.28 (2 H, dd, J 6.0,
2.3 Hz), 4.87 (1 H, br s), 6.53 (1H, dd, J 83.5 Hz).
[0225] (E)-tert-Butyl 3 -fluoro-2-(hydroxymethyl)allylcarbamate:
.sup.1H-NMR (300 MHz; CDCl.sub.3) .delta. ppm: 1.47 (9 H, s), 3.78
(1 H, t, J 6.4 Hz), 3.93 -4.02 (4 H, m), 4.94 (1 H, br s), 6.63 (1
H, d, J 83.6 Hz).
[0226] Preparation of (Z)-tert-butyl
2-(bromomethyl)-3-fluoroallylcarbamate
##STR00062##
[0227] To a stirring solution of (Z)-tert-butyl
3-fluoro-2-(hydroxymethyl)-allylcarbamate (0.50 g, 2.44 mmol) in
acetone (15 mL) at 0.degree. C. under Na was added sequentially
triethylamine (0.51 mL, 3.65 mmol) and methanesulfonyl chloride
(0.23 mL, 2.92 mmol). The resulting mixture was stirred at this
temperature for 30 min. The reaction mixture was filtered to remove
the precipitated salts and the filter cake was washed with further
acetone (10 mL). The filtrate was charged with lithium bromide
(1.06 g, 12.18 mmol) and the resulting suspension was stirred at
room temperature for 1 h. The reaction mixture was partitioned
between water (25 mL) and ethyl acetate (25 mL) and the aqueous
layer was extracted with further ethyl acetate (25 mL). The
combined organics were washed with brine (25 mL), dried over Na2SO4
and concentrated in vacuo to give (Z)-tert-butyl
2-(bromomethyl)-3-fluoroallylcarbamate as a pale yellow oil (0.63
g, 96%). .sup.1H-NMR (300 MHz; CDCl.sub.3) .delta. ppm: 1.47 (9 H,
s), 3.80 (2 H, br s), 4.09 (2 H, d, J 2.6 Hz), 4.75 (1 H, br s),
6.65 (1 H, d, J 81.9 Hz).
[0228] Preparation of (E)-tert-butyl
2-(bromomethyl)-3-fluoroallylcarbamate
##STR00063##
[0229] To a stirring solution of (E)-tert-butyl
3-fluoro-2-(hydroxymethyl)-allylcarbamate (1.20 g, 5.85 mmol) in
acetone (20 mL) at 0.degree. C. under Na was added sequentially
triethylamine (1.22 mL, 8.77 mmol) and methanesulfonyl chloride
(0.54 mL, 7.02 mmol). The resulting mixture was stirred at this
temperature for 30 min. The reaction mixture was filtered to remove
the precipitated salts and the filter cake was washed with further
acetone (10 mL). The filtrate was charged with lithium bromide
(2.54 g, 29.24 mmol) and the resulting suspension was stirred at
room temperature for 1 h. The reaction mixture was partitioned
between water (25 mL) and ethyl acetate (25 mL) and the aqueous
layer was extracted with further ethyl acetate (25 mL). The
combined organics were washed with brine (25 mL), dried over
Na.sub.2SO.sub.4 and concentrated in vacuo to give (E)-tert-butyl
2-(bromomethyl)-3-fluoroallylcarbamate as a pale yellow oil (1.46
g, 93%). .sup.1-NMR (300 MHz; CDCl.sub.3) .delta. ppm: 1.47 (9 H,
s), 3.97 (2 H, dd, J 3.5, 0.7 Hz), 4.02 (2 H, br d, J 6.1 Hz), 4.78
(1 H, br s), 6.79 (1 H, d, J 81.1 Hz).
EXAMPLE 2
[0230] Procedure A: Preparation of (Z)-tert-butyl
2-((4-(dimethylcarbamoyl)phenoxy)-methyl)-3-fluoroallylcarbamate
##STR00064##
[0231] To a vigorously stirring suspension of (Z)-tert-butyl
2-(bromomethyl)-3-fluoroallylcarbamate (430.0 mg, 1.60 mmol) and
potassium carbonate (332.5 mg, 2.41 mmol) in dry DMF (2.0 mL) at
room temperature under Na was added 4-hydroxy-N,N-dimethylbenzamide
(291.4 mg, 1.76 mmol). The resulting mixture was stirred at room
temperature overnight. The reaction mixture was partitioned between
water (40 mL) and ethyl acetate (20 mL) and the aqueous layer was
extracted with further ethyl acetate (2.times.20 ml). The combined
organics were washed with saturated aqueous NH.sub.4Cl (40 mL),
brine (40 mL), dried over Na.sub.2SO.sub.4 and concentrated under
reduced pressure. Purification of the crude material over silica
gel eluting with 60% ethyl acetate in n-hexane followed by 75%
ethyl acetate in n-hexane gave (Z)-tert-butyl
2-((4-(dimethylcarbamoyl)phenoxy)methyl)-3-fluoroallylcarbamate
(520.0 mg, 92%) as a colourless oil. .sup.1H-NMR (300 MHz;
CDCl.sub.3) .delta. ppm: 1.44 (9 H, s), 3.07 (6 H, br s), 3.78 (2
H, br s), 4.74 (2 H, dd, J 2.7, 0.8 Hz), 4.80 (1 H, br s), 6.75 (1
H, d, J 82.7 Hz), 6.95 (2 H, d, J 8.9 Hz), 7.42 (2 H, d, J 8.8
Hz).
[0232] Procedure B: Preparation of
(Z)-4-(2-(aminomethyl)-3-fluoroallyloxy)-N,N-dimethyl-benzamide
hydrochloride (Compound 18)
##STR00065##
[0233] To a stirring solution of (Z)-tert-butyl
2-44-(dimethylcarbamoyl)-phenoxy)methyl)-3-fluoroallylcarbamate
(520.0 mg, 1.48 mmol) in CH.sub.2Cl.sub.2 (8.0 mL) at room
temperature was added trifluoroacetic acid (2.0 mL). The resulting
mixture was stirred at room temperature for 30 min. All volatiles
were removed in vacuo and the residue was co-evaporated with
CH.sub.2Cl.sub.2 (2.times.20 mL) to remove trifluoroacetic acid.
The resulting oil was taken up in ethyl acetate (3.0 mL) and then
ethereal HCl (2.0 M in diethyl ether; 1.0 mL, 2.0 mmol) was added.
The precipitate formed was isolated and dried under reduced
pressure to afford (Z)-4-(2-(aminomethyl)-3-fluoroallyloxy)-N,
N-dimethylbenzamide hydrochloride (301 mg, 71%) as a pale yellow
solid; m.p.=135-137.degree. C.; .sup.1H-NMR (300 MHz; MeOD) .delta.
ppm: 3.06 (3 H, br s), 3.10 (3 H, br s), 3.71 (2 H, d, J 3.0 Hz),
4.88 (2 H, dd, J 2.8, 0.8 Hz), 7.11 (2H, d, J 8.9 Hz), 7.13 (1 H,
d, J 80.8 Hz), 7.45 (2 H, d, J 8.9 Hz).
[0234] Procedure C: Preparation of (Z)-tert-butyl 2-((4-(N,
N-dimethylsulfamoyl)phenoxy)methyl)-3-fluoroallylcarbamate
##STR00066##
[0235] To a vigorously stirring suspension of (Z)-tert-butyl
2-(bromomethyl)-3-fluoroallylcarbamate (232.0 mg, 0.87 mmol) in dry
DMF (2.0 mL) at room temperature under N.sub.2 was sequentially
added potassium carbonate (300.0 mg, 2.16 mmol) and
4-hydroxy-N,N-dimethylbenzamide (174.0 mg, 0.87 mmol). The
resulting suspension was left to stir at room temperature for 2 h.
The reaction mixture was partitioned between saturated aqueous
NH.sub.4Cl (40 mL) and ethyl acetate (20 mL) and the aqueous layer
was extracted with further ethyl acetate (20 ml). The combined
organics dried over Na.sub.2SO.sub.4 and concentrated under reduced
pressure. Purification of the crude material over silica gel
eluting with 50% ethyl acetate in n-hexane gave (Z)-tert-butyl
2-((4-N, N-dimethylsulfamoyephenoxy)methyl)-3-fluoroallylcarbamate
(279.0 mg, 83%) as a colourless oil. .sup.1H-NMR (300 MHz;
CDCl.sub.3) .delta. ppm: 1.42 (9 H, s), 2.69 (6 H, s), 3.79 (2 H,
br s), 4.76 (2 H, d, J 2.7 Hz), 4.81 (1 H, br s), 6.76 (1 H, d, J
82.6 Hz), 7.04 (2 H, d, J 8.9 Hz), 7.72 (2 H, d, J 9.0 Hz).
[0236] Procedure D: Preparation of
(Z)-4-(2-(aminomethyl)-3-fluoroallyloxy)-N,
N-dimethyl-benzenesulfonamide hydrochloride (Compound 10)
##STR00067##
[0237] To a stirring solution of (Z)-tert-butyl
2-((4-(N,N-dimethylsulfamoyephenoxy)methyl)-3-fluoroallylcarbamate
(279.0 mg, 0.72 mmol) in CH.sub.2Cl.sub.2 (4.0 mL) at room
temperature was added trifluoroacetic acid (1.0 mL). The resulting
mixture was stirred at room temperature for 30 min. All volatiles
were removed in vacuo and the residue was co-evaporated with
CH.sub.2Cl.sub.2 (2.times.20 mL). The resulting oil was taken up in
ethyl acetate/MeOH (5:1; 3.0 mL) and then ethereal HCl (2.0 M in
diethyl ether; 0.5 mL, 1.0 mmol) was added. The precipitate formed
was isolated and dried under reduced pressure to afford
(Z)-4-(2-(aminomethyl)-3-fluoroallyloxy)-N,
N-dimethylbenzenesulfonamide hydrochloride (196.0 mg, 84%) as a
white solid; m.p. 185-187.degree. C.; .sup.1H-NMR (300 MHz;
d6-DMSO) .delta. ppm: 3.39 (6 H, br s), 3.54 (2 H, br s), 4.81 (2
H, d, J 2.3 Hz), 7.16 (2 H, d, J 9.0 Hz), 7.24 (1 H, d, J 82.3 Hz),
7.25 (2 H, br s), 7.77 (2 H, d, J 9.0 Hz).
EXAMPLE 3
[0238] The following compounds were prepared according to
procedures A and B as set forth in Example 2.
[0239]
(Z)-4-(2-(Aminomethyl)-3-fluoroallyloxy)-N-tert-butylbenzamide
hydrochloride (Compound 1):
##STR00068##
[0240] Beige solid; m.p. 180-184.degree. C.; .sup.1H-NMR (300 MHz;
CD.sub.3OD) .delta. ppm: 1.45 (9 H, s), 3.70 (2H, d, J 2.2 Hz),
4.86 (2 H, dd, J 2.9, 0.7 Hz), 7.06 (2 H, d, J 9.0 Hz), 7.13 (1 H,
d, J 80.9 Hz), 7.76 (2 H, d, J 8.9 Hz).
[0241]
(Z)-4-(2-(Aminomethyl)-3-fluoroallyloxy)-3-fluoro-N,N-dimethyl-benz-
amide hydrochloride (Compound 4):
##STR00069##
[0242] Brown solid; .sup.1H-NMR (300 MHz; CD.sub.3OD) ppm: 3.04 (3
H, br s), 3.09 (3 H, br s), 3.73 (2 H, d, J 2.4 Hz), 4.93 (2 H, dd,
J 2.9, 0.8 Hz), 7.16 (1 H, d J 90.0 Hz), 7.25-7.29 (2 H, m)
[0243]
(Z)-4-(2-(Aminomethyl)-3-fluoroallyloxy)-3-chloro-N,N-dimethyl-benz-
amide hydrochloride (Compound 6):
##STR00070##
[0244] Brown solid; .sup.1H-NMR (300 MHz; CD.sub.3OD) .delta. ppm:
3.04 (3 H, br s), 3.09 (3 H, br s), 3.76 (2 H, d, J 2.3 Hz), 4.96
(2 H, dd, J 2.8, 0.9 Hz), 7.16 (1 H, d, 80.6 Hz), 7.26 (1 H, d, J
8.6 Hz), 7.43 (1 H, dd, J 8.5, 2.1 Hz), 7.55 (1 H, d, J 2.0 Hz)
[0245]
(Z)-4-(2-(Aminomethyl)-3-fluoroallyloxy)-3-bromo-N,N-dimethyl-benza-
mide hydrochloride (Compound 20):
##STR00071##
[0246] Beige-coloured solid; m.p. 54-57.degree. C.; .sup.1H-NMR
(300 MHz; CD.sub.3OD) .delta. ppm: 3.04 (3 H, br s), 3.09 (3 H, br
s), 3.78 (2 H, d, J 2.4 Hz), 4.95 (2 H, dd, J 2.9, 0.9 Hz), 7.15 (1
H, d, J 80.5 Hz), 7.22 (1 H, d, J 8.5 Hz), 7.47 (1 H, dd, J 8.5,
2.1 Hz), 7.71 (1 H, d, J 2.0 Hz)
[0247] 4-(2-(Aminomethyl)-3-fluoroallylthio)-N,N-dimethylbenzamide
hydrochloride as a mixture of E and Z isomers (Compounds 8E and
8Z):
##STR00072##
[0248] Colorless solid; .sup.1H-NMR (300 MHz; CD.sub.3OD) .delta.
ppm: 2.99 (3 H, br s), 3.00 (3 H, br s), 3.10 (6 H, br s), 3.64 (2
H, d, J 3.0 Hz), 3.71 (2 H, dd, J 3.1, 1.1 Hz), 3.77 (2 H, d, J 1.0
Hz), 3.87 (2 H, dd, J 2.1, 0.8 Hz), 6.82 (1 H, d, J 82.1 Hz), 6.93
(1 H, d, J 81.6 Hz), 7.38 (2 H, d, J 8.6 Hz) , 7.41 (2 H, d, J 8.6
Hz), 7.48 (2 H, d, J 8.6 Hz), 7.49 (2 H, d, J 8.3 Hz).
[0249]
(E)-4-(2-(Aminomethyl)-3-fluoroallyloxy)-N-isopropylbenzamide
trifluoroacetate (Compound 39):
##STR00073##
[0250] Yellow gum; .sup.1H-NMR (300 MHz; d6-DMSO) .delta. ppm: 1.13
(6 H, d, J 6.9 Hz), 3.58 (2 H, d, J 5.1 Hz), 4.05 (1 H, septet, J
6.6 Hz), 4.65 (2 H, d, J 3.6 Hz), 7.02 (2 H, d, J 6.9 Hz), 7.32 (1
H, d, J 81.9 Hz), 7.82 (2 H, d, J 6.9 Hz), 8.07 (1 H, d, J 7.5 Hz),
8.18 (3 H, br s).
[0251]
(E)-4-(2-(Aminomethyl)-3-fluoroallyloxy)-N-tert-butylbenzamide
hydrochloride (Compound 23):
##STR00074##
[0252] Colorless powder; m.p. 140-142.degree. C.; .sup.1H-NMR (300
MHz; d6-DMSO) .delta. ppm: 1.37 (9 H, s), 3.60 (2 H, d, J 3.9 Hz),
4.68 (2 H, d, J 3.6 Hz), 7.02 (2 H, d, J 6.9 Hz), 7.34 (1 H, d, J
82.5 Hz), 7.61 (1 H, s), 7.81 (2 H, d, J 6.9 Hz), 8.28 (3 H, br
s).
[0253]
(E)-4-(2-(Aminomethyl)-3-fluoroallyloxy)-N,N-diethylbenzamide
hydrochloride (Compound 24):
##STR00075##
[0254] Brown solid; .sup.1H-NMR (300 MHz; CD.sub.3OD) .delta. ppm:
1.18 (3 H, br s), 1.25 (3 H, br s), 3.37 (2 H, br s), 3.56 (2 H, br
s), 3.83 (2 H, s), 4.68 (2 H, d, J 3.5 Hz), 7.12 (2 H, d, J 8.6
Hz), 7.40 (2 H, d, J 8.7 Hz).
[0255] (E)-4-(2-(Aminomethyl)-3-fluoroallyloxy)-N-methylbenzamide
hydrochloride (Compound 25):
##STR00076##
Colorless solid; m.p. 203-205.degree. C.; .sup.1H-NMR (300 MHz;
CD.sub.3OD) .delta. ppm: 2.90 (3 H, s), 3.83 (2 H, d, J 1.8 Hz),
4.67 (2 H, dd, J 3.7, 0.8 Hz), 7.07 (2 H, d, J 9.0 Hz), 7.24 (1 H,
d, J 81.2 Hz), 7.81 (2 H, d, J 9.0 Hz).
[0256] (Z)-4-(2-(Aminomethyl)-3-fluoroallyloxy)benzamide
hydrochloride (Compound 2):
##STR00077##
Colorless solid; m.p. 195-198.degree. C.; 1H-NMR (300 MHz; MeOD)
.delta. ppm: 3.72 (2H, d, J 2.2 Hz), 4.90 (2H, dd, J 2.9, 0.8 Hz),
7.11 (2H, d, J 9.0 Hz), 7.14 (1H, d, J 80.8 Hz), 7.90 (2H, d, J 9.0
Hz).
[0257] (E)-4-(2-(Aminomethyl)-3-fluoroallyloxy)benzamide
hydrochloride (Compound 3):
##STR00078##
Colorless solid; m.p. 225-228.degree. C.; .sup.1H-NMR (300 MHz;
MeOD) .delta. ppm: 3.85 (2H, s), 4.70 (2H, dd, J 3.6, 1.0 Hz), 7.10
(2H, d, J 9.0 Hz), 7.26 (1H, d, J 81.2 Hz), 7.90 (2H, d, J 9.0
Hz).
[0258]
(E)-4-(2-(Aminomethyl)-3-fluoroallyloxy)-N,N-dimethylbenzamide
hydrochloride (Compound 13):
##STR00079##
m.p. 185-187.degree. C.; .sup.1H-NMR (300 MHz; d.sub.6-DMSO)
.delta. ppm: 2.95 (6 H, s), 3.60 (2 H, d (br), J 4.2 Hz), 4.67 (2
H, d, J 3.6 Hz), 7.03 (2 H, d, J 8.7 Hz), 7.33 (1 H, d, J 82.2),
7.40 (2 H, d, J 8.7 Hz), 8.29 (3 H, br s).
[0259]
(Z)-4-(2-(Aminomethyl)-3-fluoroallyloxy)-N,N,2-trimethylbenzamide
hydrochloride (Compound 26):
##STR00080##
[0260] .sup.1H-NMR (300 MHz; DMSO) .delta. ppm: 2.17 (3 H, s), 2.75
(3 H, s), 2.98 (3 H, s), 3.54 (2 H, m (br)), 4.72 (2 H, d, J 2.4
Hz), 6.85 (1 H, dd, J 2.4, 8.4 Hz), 6.89 (1 H, d, J 2.4 Hz), 7.10
(1 H, d, J 8.4 Hz), 7.21 (1 H, d, J 82.2 Hz), 8.15 (3 H, s).
[0261]
4-(2-(Aminomethyl)-3-fluoroallyloxy)-3-methoxy-N,N-dimethylbenzamid-
e hydrochloride as a mixture of E and Z isomers (Compounds 7E and
7Z):
##STR00081##
[0262] E-Isomer
[0263] .sup.1H-NMR (300 MHz; DMSO) .delta. ppm: 2.95 (6 H, s), 3.52
(2 H, m (br)), 3.79 (3 H, s), 4.65 (2 H, d, J 3.3 Hz), 6.95-7.09 (3
H, m), 7.24 (1 H, d, J 82.0 Hz), 8.25 (3 H, s).
[0264] Z-Isomer
[0265] .sup.1H-NMR (300 MHz; DMSO) .delta. ppm: 2.95 (6 H, s), 3.59
(2 H, m (br)), 3.79 (3 H, s), 4.77 (2 H, d, J 2.1 Hz), 6.95-7.09 (3
H, m), 7.29 (1 H, d, J 82.0 Hz), 8.25 (3 H, s).
EXAMPLE 4
[0266] The following compounds were prepared according to
procedures C and D as set forth in Example 2.
[0267] (E)-4-(2-(Aminomethyl)-3-fluoroallyloxy)benzenesulfonamide
hydrochloride (Compound 11):
##STR00082##
Colorless solid; m.p. 107-110.degree. C.; 1H-NMR (300 MHz; MeOD)
.delta. ppm: 3.85 (2H, d, J 2.0 Hz) 4.71 (2H, dd, J 3.6, 0.8 Hz),
7.16 (2H, d, J 9.0 Hz), 7.27 (1H, d, J 81.5 Hz), 7.88 (2H, d, J 9.0
Hz).
[0268]
(E)-4-(2-(Aminomethyl)-3-fluoroallyloxy)-N,N-dimethylbenzenesulfona-
mide hydrochloride (Compound 14):
##STR00083##
m.p. 178-180.degree. C.; .sup.1H-NMR (300 MHz; d.sub.6-DMSO)
.delta. ppm: 2.57 (6 H, s), 3.61 (2 H, d (br), J 2.1 Hz), 4.73 (2
H, d, J 3.3 Hz), 7.22 (2 H, d, J 8.7 Hz), 7.36 (1 H, d, J 82.2 Hz),
7.71 (2 H, d, J 8.7 Hz), 8.29 (3 H, brs).
[0269]
(Z)-3-(2-(Aminomethyl)-3-fluoroallyloxy)-N,N-dimethylbenzenesulfona-
mide hydrochloride(Compound 15):
##STR00084##
Off white solid; m.p. 140-142.degree. C.; .sup.1H-NMR (300 MHz;
CD.sub.3OD) .delta. ppm: 2.70 (6 H, s), 3.71 (2 H, d, J 2.3 Hz),
4.90 (2 H, dd, J 2.9, 0.8 Hz), 7.14 (1 H, d, J 80.8 Hz), 7.31-7.62
(4 H, m).
[0270]
(E)-4-(2-(Aminomethyl)-3-fluoroallyloxy)-N-methylbenzenesulfonamide
hydrochloride (Compound 28):
##STR00085##
Beige solid; m.p. 143-146.degree. C.; 1H-NMR (300 MHz; MezoD)
.delta. ppm: 2.51 (3H, s), 3.85 (2H, s), 4.73 (2H, d, J 3.3 Hz),
7.19 (2H, d, J 8.8 Hz), 7.27 (1H, d, J 81.0 Hz), 7.80 (2H, d, J 8.7
Hz).
[0271]
(Z)-4-(2-(Aminomethyl)-3-fluoroallyloxy)-N-methylbenzenesulfonamide
hydrochloride (Compound 29):
##STR00086##
Colorless solid; m.p. 178-180.degree. C.; 1H-NMR (300 MHz;
d.sub.6-DMSO) .delta. ppm: 2.38 (3H, d, J 5.0 Hz), 3.55 (2H, br s),
4.81 (2H, d, J 2.3 Hz), 7.20 (2H, d, J 8.9 Hz), 7.25 (1H, d, J 82.0
Hz), 7.34 (1H, q, J 5.1 Hz), 7.73 (2H, d, J 8.9 Hz), 8.15(3H, br
s).
[0272]
(E)-4-(2-(Aminomethyl)-3-fluoroallyloxy)-N-ethylbenzenesulfonamide
hydrochloride (Compound 30):
##STR00087##
Colorless solid; m.p. 80-85.degree. C.; 1H-NMR (300 MHz; MeOD)
.delta. ppm: 1.06 (3H, t, J 7.3 Hz), 2.88 (2H, q, J 7.2 Hz), 3.85
(2H, d, J 2.0 Hz), 4.72 (2H, dd, J 3.6, 0.8 Hz), 7.18 (2H, d, J 9.0
Hz), 7.27 (1H, d, J 81.0 Hz), 7.82 (2H, d, J 9.0 Hz).
[0273]
(Z)-4-(2-(Aminomethyl)-3-fluoroallyloxy)-N-ethylbenzenesulfonamide
hydrochloride (Compound 31):
##STR00088##
White solid; m.p. 65-67.degree. C.; .sup.1H-NMR (300 MHz;
d.sub.6-DMSO) .delta. ppm: 0.96 (3H, t, J 7.2 Hz), 2.74 (2H, dq, J
7.0, 7.2 Hz), 3.55 (2H, br s), 4.80 (2H, br s), 7.19 (2H, d, J 8.8
Hz), 7.25 (1H, d, J 81.9 Hz), 7.44 (1H, t, J 5.5 Hz), 7.74 (2H, d,
J 8.7 Hz), 8.16 (3H, br s).
[0274]
(E)-4-(2-(Aminomethyl)-3-fluoroallyloxy)-N-isopropylbenzenesulfonam-
ide hydrochloride (Compound 32):
##STR00089##
Colorless solid; m.p. 151-153.degree. C.; 1H-NMR (300 MHz; MeOD)
.delta. ppm: 1.03 (6H, d, J 6.6 Hz), 3.33 (1H, m) 3.85 (2H, s),
4.72 (2H, d, J3.8 Hz), 7.17 (2H, d, J9.0 Hz), 7.27 (1H, d, J 80.9
Hz), 7.83 (2H, d, J 8.9 Hz).
[0275]
(Z)-4-(2-(Aminomethyl)-3-fluoroallyloxy)-N-isopropyl-benzenesulfona-
mide hydrochloride (Compound 33):
##STR00090##
White solid; m.p. 50-52.degree. C.; .sup.1H-NMR (300 MHz;
d.sub.6-DMSO) .delta. ppm: 0.94 (6H, d, J 6.5 Hz), 3.18 (1H, m),
3.56 (2H, br s), 4.81 (2H, br s), 7.18 (2H, d, J 8.9 Hz), 7.25 (1H,
d, J 81.9 Hz), 7.46 (1H, d, J 7.1 Hz), 7.76 (2H, d, J 8.9 Hz), 8.09
(3H, br s).
[0276] (Z)-4-(2-(Aminomethyl)-3-fluoroallyloxy)benzenesulfonamide
hydrochloride (Compound 9):
##STR00091##
m.p. 227-230.degree. C.; .sup.1H-NMR (300 MHz; d.sub.6-DMSO)
.delta. ppm: 3.54 (2 H, br), 4.80 (2 H, s), 7.24 (1 H, d, J 82.2
Hz), 7.15 (2 H, d, J 8.7 Hz), 7.26 (2 H, s), 7.77 (2 H, d, J 8.7
Hz), 8.14 (3 H, br s).
EXAMPLE 5
Method to Determine the Ability of Compounds of Formula Ito Inhibit
Human Recombinant SSAO/VAP-1
[0277] The inhibitory effects of all the compounds of Formula I
were tested against human recombinant SSAO/VAP-1 using the coupled
colorimetric method as described for monoamine oxidase,
copper-containing amine oxidases and related enzymes (Holt A. and
Palcic M., A peroxidise-coupled continuous absorbance plate-reader
assay for flavin monoamine oxidases, copper-containing amine
oxidases and related enzymes. Nat. Protoc. 2006, 1, 2498-2505).
Briefly, a cloned cDNA template corresponding to residues 34-763 of
human SSAO/VAP-1, and incorporating a mouse Ig kappa (.kappa.)
signal sequence, N-terminal Flag epitope tag and tobacco etch virus
(TEV) cleavage site, was assembled in a mammalian expression vector
(pLO-CMV) by Geneart AG. This vector containing human SSAO/VAP-1
residues was transfected into CHO-K1 glycosylation mutant cell
line, Lec 8. A clone stably expressing human SSAO/VAP-1 was
isolated and cultured in large scale. Active human SSAO/VAP-1 was
purified and recovered using immunoaffinity chromatography. This
was used as source for SSAO/VAP-1 activity. A high-throughput
colorimetric assay was developed using either 96 or 384 well
format. Briefly, in a standard 96 well plate assay 50 .mu.L of
purified human SSAO/VAP-1 (0.25 .mu.g/mL) in 0.1 M NaPO4 buffer (pH
7.4) was added into each well. Test compounds were dissolved in
DMSO and tested in a Concentration Response Curve (CRC) with 4-9
data points, typically in the micromolar or nanomolar range after
incubation with human SSAO/VAP-1 for 30 min at 37.degree. C. After
30 min incubation, 50 .mu.L of the reaction mixture containing 600
.mu.M benzylamine (Sigma Aldrich), 120 .mu.M Amplex Red (Sigma
Aldrich) and 1.5 U/mL horseradish peroxidase (Sigma Aldrich)
prepared in 0.1 M NaPO4 buffer (pH 7.4) were added to the
corresponding well. The fluorescence unit (RFU) was read every 2.5
min for 30 min at 37.degree. C. excitation 565 nm and emission 590
(Optima; BMG labtech). The slope of the kinetics for each well was
calculated using MARS data analysis software (BMG labtech) and this
value was used to deduce the IC.sub.50 value (Dotmatics). The
results are shown in Table 2.
TABLE-US-00002 TABLE 2 SSAO/VAP-1, MAO-B and DAO inhibitory
activities of examples of compounds of the invention and
comparative compounds Human SSAO/VAP- Endogenous Human Human 1
expressed in SSAO/VAP- Diamine MAO-B HMEC cells 1 in rat fat
Oxidase Com- Activity IC.sub.50 Activity IC.sub.50 Activity
IC.sub.50 Activity IC.sub.50 pound (micromolar) (nanomolar)
(nanomolar) (micromolar) 1 <1 <100 <100 <1 2 >1
<100 <100 <0.1 3 >10 <100 <100 >1 4 >0.1
<100 <100 <1 6 >1 <100 NT <1 7 >10 <100 NT
<1 8 >1 <100 NT NT 9 >10 <100 <100 <1 10
>10 <100 <100 >1 11 >10 <100 <100 >10 13
>0.1 <100 <100 >1 14 >10 <100 <100 >10 15
>100 <100 <100 NT 18 >0.1 <100 <100 <0.1 20
>1 <100 NT <1 23 >1 <100 <100 >10 24 >1
<100 <100 >10 25 >1 <100 <100 <1 26 >1
<100 NT <1 28 >10 <100 <100 >10 29 >10 <100
<100 >1 30 >10 <100 <100 >10 31 >1 <100
<100 <1 32 >10 <100 <100 >10 33 >10 <100
<100 <1 Mofegiline 5 nM 19 6 >10
EXAMPLE 6
Method to Determine the Ability of Compounds of Formula Ito Inhibit
Human Recombinant SSAO/VAP-1 Expressed in HMEC Cells
[0278] SSAO/VAP-1 activity was determined using a similar method as
described in Example 5 except for the source of human SSAO/VAP-1.
pcDNA-DEST40-hSSAO/VAP-1 was transfected into HMEC cells using
lipofectamine (Invitrogen Ltd). A clone stably expressing human
SSAO/VAP-1 was selected and was stored in liquid nitrogen until
cell lysate was required for colorimetric assay. Briefly, HMEC cell
expressing human SSAO/VAP-1 were grown in several 10 cm petri
dishes, once the cells reached 100% confluency, cells were
harvested and homogenates were prepared. Cells were washed twice
with 5 mL of chilled HES buffer (20 mM HEPES, 1 mM EDTA, 250 mM
sucrose, pH 7.4). HES buffer containing 1x protease inhibitor
(Sigma Aldrich) and added and cells were incubated on ice for 3
min. Buffer was removed and cells were scraped and transferred to a
centrifuge tube. Cell lysates were prepared by passing through 23 G
needle for 10 times and followed by 27 G needle for 10 times.
Alternatively the cell lysates were prepared by using IKA
Ultra-Turrax T 10 homogenizer for 3 min for every 10 mL of cell
suspensions. Cells were then spun for 5 min at 300xg. The clear
supernatant was transferred to new centrifuge tube and stored at
-80.degree. C. until colorimetric assay was performed. Prior to the
assay, 0.5 mM pargyline was added in order to inhibit any residue
MAO activities. The assay was performed as described in Example 5.
Briefly, 50 .mu.L of cell lysate was incubated with test compounds
for 30 min at 37.degree. C. Reaction mixtures were added and
kinetic was read as described in detail in Example 5. Table 2 shows
the data of several compounds of Formula I.
EXAMPLE 7
Method to Determine the Ability of Compounds of Formula Ito Inhibit
SSAO/VAP-1 in Mouse and Rat Fat Homogenate
[0279] Abdominal fat from BALB/c mice, Wistar or Sprague Dawley
rats, which are tissues enriched with SSAO/VAP-1- were surgically
removed. For every gram of animal abdominal fat tissue, 1 mL of 0.1
M NaPO4 buffer (pH 7.4) was added. Tissues were homogenized using
IKA Ultra-Turrax T 10 homogenizer for 3 min, homogenate was
centrifuged for 15 min at 3000 xg. The middle layer (clear
supernatant) was removed without disturbing the top layer (high fat
content) or the debris on the bottom of the tube. SSAO/VAP-1
activity was determined by checking the fluorescent signal.
K.sub.m/V.sub.max values were determined and the fat homogenate was
aliquoted and stored at -80 C until assays were performed. Assay
was performed in a similar fashion as for human SSAO/VAP-1 (Example
5) except, the substrate (benzylamine) concentrations used for
mouse fat homogenate and rat fat homogenate were 80 .mu.M and 30
.mu.M respectively. The results are shown in Table 2.
EXAMPLE 8
Method to Determine the Ability of Compounds of Formula Ito Inhibit
Human Recombinant MAO-B
[0280] The specificity of invention compounds was tested by
determining their ability to inhibit MAO-B activities in vitro.
Recombinant human MAO-B (0.06 mg/mL; Sigma Aldrich) was used as
source of MAO-B enzyme activities. The assay was performed in a
similar way as for human SSAO/VAP-1 (Example 5) except, the
substrate benzylamine was used at 100 .mu.M. Table 2 shows data for
several compounds of Formula I.
EXAMPLE 9
Method to Determine the Ability of Compounds of Formula Ito Inhibit
Human Recombinant Diamine Oxidase
[0281] Three human genes are found to encode for copper-containing
amine oxidases. Diamine oxidase (DAO) is one of the enzymes
produced by the AOC1 gene, named for its substrate preference for
diamines. The specificity of the compounds of Formula I was tested
by determining their ability to inhibit DAO activities in vitro.
Recombinant human DAO (2.4 .mu.g/mL) was used as source of DAO
enzyme activities. The assay was performed as described in the
method for human SSAO/VAP-1 (Example 5) except the substrate used
was 200 .mu.M putrescine, and the control wells contained 10 .mu.M
aminoguanidine instead of Mofegiline. Table 2 shows data for
several compounds of Formula I.
EXAMPLE 10
Method to Determine the Ability of Compounds of Formula Ito Inhibit
Lysyl Oxidase
[0282] Lysyl oxidase (LOX) is an extracellular copper dependent
enzyme which oxidizes peptidyl lysine and hydroxylysine residues in
collagen and lysine residues in elastin to produce peptidyl
alpha-aminoadipic-delta-semialdehydes. This catalytic reaction can
be irreversibly inhibited by .beta.-aminopropionitrile (.beta.APN)
that binds to the active site of LOX (Tang S. S., Trackman P. C.
and Kagan H. M., Reaction of aortic lysyl oxidase with
beta-aminoproprionitrile. J. Biol. Chem. 1983, 258, 4331-4338).
There are five LOX family members; these are LOX, LOXL1, LOXL2,
LOXL3 and LOXL4. The specificity of compounds of Formula I was
tested by determining their ability to inhibit different sources of
LOX family in vitro.
[0283] Two sources of enriched LOX were prepared using (1)
supernatant from normal human lung fibroblast (NHLF) and (2)
homogenate from rat skin. Briefly, NHLF was cultured in complete
medium containing SingleQuot supplements with 5% FBS (Lonza
Australia Pty Ltd) and FGM-2 medium (Lonza Australia Pty Ltd) in
T175 flask until 60% to 80% confluency. Once the optimal confluency
was reached, cells were washed twice using phosphate saline buffer
and replaced with medium containing 0.1% FBS and FGM-2 medium. Two
to four days later, supernatant was collected and centrifuged for 5
min at 300xg. Cell debris was removed and LOX proteins were further
enriched using Amicon.RTM. Ultra-4 Centrifugal Filter Units, with a
10 kDa cut-off (Millipore Ltd). Briefly, samples were added to the
columns and centrifuged at 4000xg, 4.degree. C. until a final
volume of 1 mL was obtained. During the centrifugation process,
buffer was exchanged using sodium borate buffer (1.2 M Urea; 0.05 M
sodium borate; pH 8.2). Different substrates were tested on the
enriched LOX supernatant and the fluorescent signals were measured
using colorimetric assay. The substrate specificity and
pharmacology properties of the enriched supernatant were
corroborated with published literatures. The enriched supernatant
was aliquoted and stored at -80.degree. C.
[0284] LOX proteins are found highly expressed on skin (Rucker et
al 1995), thus rat skin homogenate were used as a second source for
determining LOX enzyme activities. Briefly, to every gram of finely
chopped rat skin tissue, 3 mL of phosphate buffered saline was
added. Tissues were then homogenized using IKA Ultra-Turrax T 10
homogenizer for 3 min. This and all the following homogenizations
were performed on ice. The homogenate was centrifuged (20817xg, 30
min) at 4.degree. C. and the supernatant was discarded. Tissues
were resuspended using 4.2M urea-sodium borate buffer and
homogenized for approximately 3 min (2.5 mL buffer/g). Homogenate
was incubated overnight at 4.degree. C. Sample was spun (20817xg,
30 min) and supernatants were collected. Cell pellet underwent two
cycles of homogenization and the supernatant from each process was
collected. All the supernatants were pooled and LOX proteins in rat
skin homogenate were enriched using Amicon.RTM. Ultra-4 Centrifugal
Filter Units, with a 10 kDa cut-off. Sample underwent buffer
exchange until a concentration of 1.2 M urea was reached. Different
substrates were tested on the enriched LOX skin homogenate and the
fluorescent signals were measured using colorimetric assay. The
substrate specificity and pharmacology properties were determined.
The enriched skin homogenate was aliquoted and stored at
-80.degree. C.
[0285] The specificity of compounds of Formula I was tested using
the two different sources of LOX supernatant from normal human lung
fibroblast (NHLF) and homogenate from rat skin. Assays were
performed as described in the method for human SSAO/VAP-1 (Example
5 except these two sources were treated with pargyline (0.5 mM),
the substrate used was 10 mM putrescine, the control wells
contained 10 .mu.M .beta.APN instead of Mofegiline, and was read at
45.degree. C. Table 2 shows data for several compounds of Formula
I.
EXAMPLE 11
Method to Determine the Ability of Compounds of Formula Ito Inhibit
SSAO/VAP-1 When Administered to Mice and Rats
[0286] Mice and rats were administered either orally (p.o.) or
intravenously (i.v.) with invention compounds at various
concentrations ranging from 0.1 mg/Kg to 100 mg/Kg. Control group
were administered the same volume of vehicle p.o. or i.v. Abdominal
fats, plasma and lung, liver and aorta tissue were collected at
various time points ranging from 0 to 96 hours.
[0287] Each tissue was homogenized in HES buffer with lx
phosphatase inhibitor (Sigma Aldrich) and lx protease inhibitor (5
mL/g for rats and 20 mL/g for mice). The homogenate was used to
measure SSAO activity as described in human SSAO/VAP-1 (Example 5),
except the mice and rat homogenate was further diluted using 0.1 M
NaPO4 buffer (pH 7.4) at 1:5 and 1:20 ratio, respectively. The
substrate (benzylamine) concentrations used for mouse fat
homogenate and rat fat homogenate were 80 .mu.M and 30 .mu.M
respectively. The slope of the kinetics for each well was
calculated using MARS data analysis software. The percentage
response was calculated using the SSAO activity from treated animal
tissue normalized to control animals. Graphs were plotted using
GraphPad Prism Software. The method described by Yu, P. H. et al.,
Involvement of SSAO-mediated deamination in adipose glucose
transport and weight gain in obese diabetic KKay mice, Am J Physiol
Endocrinol Metab 2004, 286: E634-E64 was used to determine the
degree of SSAO/VAP-1 inhibition in plasma. FIGS. 1A-1E, 2A-2E and
3A-3E show the dose response profile for Compound 23 in all tissues
employing various administration protocols.
EXAMPLE 12
Inhibition of Carrageenan-Induced Rat Paw Edema
[0288] Carrageenan-induced paw edema is a widely used test to
determine the anti-inflammatory activity of various therapeutic
agents and is a useful experimental system for assessing the
efficacy of compounds to alleviate acute inflammation. Inflammation
is induced by intraplantar injection of 20 .mu.L of carrageenan
suspension (1% in saline) as described (see Roussin, A. et al.,
Neutrophil-associated inflammatory responses in rats are inhibited
by phenylarsine oxide. Eur. J. Pharmacol, 1997, 322, 91-96 and
Wise, L. E. et al., Evaluation of fatty acid amides in the
carrageenan-induced paw edema model. Neuropharmacology, 2008. 54,
181-188). Test compound (0.1-100 mg/kg) is given 1 hour prior to
the administration of carrageenan. Paw thickness is measured with
electronic digital calipers prior to and 1, 3, 5, 6 and 24 hours
after the carrageenan injection, to demonstrate greater than 50%
inhibition of edema as compared to control animals.
EXAMPLE 13
Efficacy in Model of Systemic Inflammation
[0289] Evaluation of the efficacy of compounds of the invention is
carried out in a model of endotoxemia that consists of
intraperitoneal injection of a high dose of lipopolysaccharisde
(LPS) (5 mg/kg) (see Schabbauer, G. et al., PI3K-Akt pathway
suppresses coagulation and inflammation in endotoxemic mice.
Arterioscler. Thromb. Vasc. Biol., 2004, 24, 1963-1969 and Lentsch,
A. B. et al., STAT4 and STAT6 regulate systemic inflammation and
protect against lethal endotoxemia. J. Clin. Invest., 2001, 108,
1475-1482). Blood samples (50 mL) are collected at 0, 1, 2, 4, and
8 hrs after LPS injection and used for blood smears and cytokine
evaluation. Plasma concentrations of TNF-.alpha., IL-6, MCP-1 and
KC in mice treated with compound (0.1-100 mg/kg) are reduced
between 20-80% as measured by ELISA. Animal survival rates are
recorded for the next 3 days and compound treated mice show a 20%
greater survival rate.
EXAMPLE 14
Inhibition of Air Pouch Inflammation in the Mouse
[0290] Injection of carrageenan induces inflammation and the pouch
serves as a reservoir of cells and mediators that can be easily
measured in the fluid that accumulates locally.
[0291] Animals were anaesthetized and 6 ml of sterile air was
injected subcutaneously as described (see Romano, M. et al.,
Carrageenan-induced acute inflammation in the mouse air pouch
synovial model. Role of tumour necrosis factor. Mediators Inflamm,
1997. 6, 32-38). After 3 days the pouches were re-injected with 3
ml of sterile air. On day 6, the controls received 1 ml of vehicle;
treated controls received 10 mg/kg dexamethasone, and Compound 23
group received 2 mg/kg. 1 hour after treatment the mice were
injected with 1 ml carrageenan solution into the air pouch. At 4
hours after carrageenan injection, the animals were euthanized and
the pouches were washed with saline. The exudates were used for
cell count as well as cytokine measurement. Compound 23 treated
mice showed reduced inflammation, with a significant reduction in
exudate volume and neutrophil infiltration as well as significantly
diminished TNF-.alpha. and IL-6 production (FIG. 4).
EXAMPLE 15
Inhibition of Leukocyte Migration in Cremaster Microcirculation
[0292] The mouse cremaster preparation was used to study the
inhibition of leukocyte migration to the microcirculation and
adjacent connective tissue as described (see Pinho, V. et al.,
Tissue- and Stimulus-Dependent Role of Phosphatidylinositol
3-Kinase Isoforms for Neutrophil Recruitment Induced by
Chemoattractants In Vivo. J Immunol 2007; 179:7891-7898 and
Nanhekhan, L. V., Microcirculatory hemodynamics of the rat
cremaster muscle flap in reduced blood flow states. Ann Plast Surg.
2003 Aug; 51(2):182-8).
[0293] Briefly, an incision was made in the scrotal skin to expose
the left cremaster muscle, which was then carefully removed from
the associated fascia. A lengthwise incision was made on the
ventral surface of the cremaster muscle using a cautery. The
testicle and the epididymis were separated from the underlying
muscle and were moved into the abdominal cavity. The muscle was
then spread out over an optically clear viewing pedestal and was
secured along the edges with a suture. The exposed tissue was
superfused with warm bicarbonate-buffered saline. Single,
unbranched cremasteric venules (25-40 um in diameter) were selected
and, to minimize variability, the same section of cremasteric
venule was observed throughout the experiment. The number of
rolling, adherent, and emigrated leukocytes upon KC or LPS
stimulation was determined offline during video playback analysis.
Rolling leukocytes were defined as those cells moving at a velocity
less than that of erythrocytes within a given vessel. The flux of
rolling cells was measured as the number of rolling cells passing
by a given point in the venule per minute. A leukocyte was
considered to be adherent if it remained stationary for at least 30
s, and total leukocyte adhesion was quantified as the number of
adherent cells within a 100 .mu.m length of venule. Compound 23 (6
mg/kg) was given 1 hour prior to the administration of stimulus.
Compound 23 demonstrated >50% inhibition of rolling and adhesion
when compared to the control group (FIG. 5).
EXAMPLE 16
Inhibition of Inflammation Upon Induction of the Cecal Ligation and
Perforation (CLP) Insult
[0294] The CLP procedure involved a laparotomy and ligation of the
cecum, distal to the ileocecal valve as described (see Martin, E.
et al Phosphoinositide-3 Kinase .gamma. Activity Contributes to
Sepsis and Organ Damage by Altering Neutrophil Recruitment Am. J.
Respir. Crit. Care Med. September, 2010 182 (6) 762-773 and
Lutterloh, E. C., Inhibition of the RAGE products increases
survival in experimental models of severe sepsis and systemic
infection. Crit Care. 2007; 11(6):R122).
[0295] The cecum was punctured with a needle to induce moderate
sepsis; following the puncture a small amount of fecal matter was
extruded from each puncture Sham animals received a laparotomy with
no manipulation of the cecum. Compound 23 was dosed 6 hours prior
to puncture. Following ligation and puncture, the cecum was
returned to the abdomen, the peritoneal wall and skin incisions
were closed, and the animals were allowed to recover. Eighteen
hours following CLP/sham surgery, a proportion of the animals from
each group were sacrificed and the lungs were lavaged. The lavage
was centrifuged to isolate inflammatory cells for differential cell
analysis, while a separate aliquot was used to count total live
cell number using a haemocytometer and light microscopy. Survival
was monitored over 7 days. Compared with the vehicle-treated group
that showed 50% lethality incidence, compound-treated mice resulted
in a statistically significant reduction in lethality with 90% of
mice surviving at day 7 (FIG. 6B). In addition, the inhibitory
effect of the compound on the inflammatory component of disease was
seen by reduced total leukocyte in the BALF (FIG. 6A).
EXAMPLE 17
Inhibition of Chemically Induced Colitis
[0296] This procedure is used to screen for compounds which inhibit
the development of colitis as compared to control using the
TNBS-induced colitis model (see Maslowski, K. M. et al., Regulation
of inflammatory responses by gut microbiota and chemoattractant
receptor GPR43. Nature, 2009. 461, 1282-1286). Briefly, mice are
sensitised by applying a mixture of acetone/olive oil (50:50) with
TNBS (50:50, total) on shaved skin between shoulder blades. Seven
days later, mice are challenged intra-rectally with 2.5 mg TNBS
with 50% ethanol, 3.5 cm from the anal verge. Mice are fasted
overnight before the intrarectal challenge, and given 5% dextrose
in the drinking water. Mice are analysed 3 days after TNBS
challenge.
[0297] Colitis is also induced by dextran sulphate sodium salt
(DSS), as described (see Vieira, A. T. et al., Treatment with a
novel chemokine-binding protein or eosinophil lineage-ablation
protects mice from experimental colitis. Am. J. Pathol, 2009. 175.
2382-2891). Mice receive 4% (w/v) DSS in their drinking water ad
libitum for 7 days, then switch to autoclaved drinking water.
Compounds are given throughout the experimental period at 0.1-100
mg/kg. Mice are sacrificed on the seventh day, and the colon is
analysed. For survival studies, mice are followed for 25 days after
start of DSS treatment. Compounds inhibit disease progression as
evaluated by less weight loss (20%) and decreases clinical
symptoms. They also delay presence of blood in stools and loss of
firmness. Histological analysis of colon sections demonstrate
>30% less inflammation. Cytokine measurement shows up to 70%
inhibition of ILS, IL6 and TNFa production.
EXAMPLE 18
Inhibition of ConA Liver Induced Injury in Mice
[0298] Autoimmune liver disease includes autoimmune hepatitis
(AIH), a distinct form of acute and chronic inflammatory liver
disease in which immune reactions against host antigens have been
found to be the major pathological mechanism. AIH may lead to
severe liver disease such as liver cirrhosis. ConA-induced specific
liver injury in mice is an experimental animal model, which has
been closely studied in the pathogenesis of the liver injury. T
cell mediated immunity and the subsequent release of TNF-.alpha.
are considered to play an important role in this disease.
[0299] Concanavalin A (ConA) 10 mg/kg is administered intravenously
in saline. Control mice are injected with saline. Transaminase and
alkaline phosphatase in blood and liver are >40% reduced by
compound at 0.1-100 mg/kg. Cytokines, such as IL-6, TNF-.alpha. and
IL-5, are significantly reduced, showing up to 75% reduction when
compared to control. Hepatic histopathology demonstrates decreased
inflammation and tissue damage in the compound treated group (see
Hu, X. D. et al., Preventive effects of 1,25--(OH)2VD3 against
ConA-induced mouse hepatitis through promoting vitamin D receptor
gene expression. Acta Pharmacol. Sin, 2010, 31, 703-708; Zhang, X.
L. et al., Protective effects of cyclosporine A on T-cell dependent
ConA-induced liver injury in Kunming mice. World J. Gastroenterol.,
2001, 7,569-571; Erhardt, A. et al., IL-10, regulatory T cells, and
Kupffer cells mediate tolerance in concanavalin A-induced liver
injury in mice. Hepatology, 2007, 475-485).
EXAMPLE 19
Inhibition of Parkinson's Disease Pathology in Rats
[0300] Model A: Systemic Exposure to LPS to Promote
Neurodegeneration
[0301] Parkinson's disease is a pathological, age-related
neurodegenerative disorder, characterized by a specific and
progressive degeneration of dopaminergic neurons. Peripheral
exposure to LPS, a potent inducer of inflammation in rodents, has
been shown to result in neuroinflammation, persistent microglial
activation, delayed and progressive dopamine neurons loss in the
substantia nigra, similar to that observed in Parkinson's Disease.
Recent evidence has implicated inflammation in the
neurodegeneration of nigrostriatal dopaminergic neurons, and LPS
was shown to promote it (see Qin, L. et al. Systemic LPS causes
chronic neuroinflammation and progressive neurodegeneration, 2007
Glia, 453-462).
[0302] Long Evans rats were dosed intraperitoneal (ip) with 2 mg/kg
of Compound 9 or vehicle 1 h before the first (time 0 h) and the
third (time 24 h) injections of LPS. At time 0 the animals received
a dose of 10 mg/kg of LPS. At time 6 and 24 h the animals were
dosed with 3 mg/kg of LPS solution, ip. 30 h after the first LPS
injection, the animals received ip injections of lethabarb and were
transcardially perfused with 400 ml PBS at 4.degree. C. followed by
400 ml of 4% paraformaldehyde (PFA). The brains were post fixed
overnight in 4% PFA at 4.degree. C. followed by 20% sucrose
solution for 24 h. 30 pm sections were collected and stained for
immunofluorescence, immunohistochemistry and western blot analysis.
The group treated with Compound 9 showed reduced neutrophil
infiltration in the dorso-lateral striatum and hippocampus, and a
reduction of microglial cell recruitment and activation (dendrites
length, surface and volume) in the substantia nigra and
dorso-lateral striatum (FIG. 7).
[0303] Model B: Localized Exposure to LPS to Promote
Neurodegeneration
[0304] Direct injection of LPS in selected areas of the brain can
be performed in order to induce a localized inflammatory response
in the brain. The dopaminergic neurons are more vulnerable to
inflammation based neurotoxicity, and the local LPS injections in
relevant areas such as substantia nigra and striatum have been used
as a model for Parkinson's Disease (see Liu, M., & Bing, G.
Lipopolysaccharide animal models for Parkinson's disease.
Parkinson's disease, 2011, 327089; Choi, D.-Y. et al. Striatal
neuroinflammation promotes Parkinsonism in rats. PloS one, 2009,
4(5), e5482). LPS has also been shown to promote nigral
dopaminergic neuron degeneration (see Machado, A. et al.,
Inflammatory animal model for Parkinson's Disease: The intranigral
injection of LPS induced the inflammatory process along with the
selective degeneration of nigrostriatal dopaminergic neurons. ISRN
Neurology, 2011, 1-16).
[0305] A solution containing 2 .mu.L of 1 mg/mL of LPS is injected
in the left substantia nigra of female rats previously
anesthetized. Animals are treated with 0.1-100 mg/Kg of compound
and the results show up to 80% decreases in inflammation with less
activation of microglia as compared to control animals. Vehicle
treated animals are accompanied by loss of dopaminergic neurons and
decreases of the intracellular content of dopamine (DA), effects
which are significantly inhibited by the compound. The average loss
of the dopaminergic system in the vehicle treated groups is around
35%, whilst in the compound treated group it is <20%.
EXAMPLE 20
Inhibition of Inflammation Associated with Stroke in Mice
[0306] The development of the brain tissue damage in stroke is
composed of an immediate component followed by an inflammatory
response with secondary tissue damage after reperfusion. The
ischemia/reperfusion model mimics the tissue damage as well as
inflammatory component (see Hase, Y. et al., Cilostazol, a
phosphodiesterase inhibitor, prevents no-reflow and haemorrhage in
mice with focal cerebral ischemia. Exp. Neurol., 2012, 233(1),
523). Mice are subjected to middle cerebral artery
occlusion/reperfusion surgery by introducing a nylon monofilament
into the right common carotid artery (CCA). It is carefully
advanced to 11 mm from the carotid artery bifurcation and a
proximal occlusion of the right middle cerebral artery is
established. After 90 min occlusion, the filament is withdrawn to
allow reperfusion for another 22.5 hr. Animals are treated with
compound 0.1-100 mg/Kg and show up to 50% reduction in platelet
aggregation and leukocyte plugging in the micro vessels. Treatment
significantly reduces mortality rate with >80% of animal
survival.
EXAMPLE 21
Inhibition of Acute Lung Inflammation in the LPS Driven Model
[0307] Inflammation was induced by instillation of LPS into the
lungs of mice using an tracheal surgery challenge method (see
Innate immune responses to LPS in mouse lung are suppressed and
reversed by neutralization of GM-CSF via repression of TLR-4. Am.
J. Physiol. Lung Cell. Mol. Physiol., 2004, L877-85; and Harrod, K.
S., A. D. Mounday, and J. A. Whitsett, Adenoviral E3-14.7K protein
in LPS-induced lung inflammation. Am. J. Physiol. Lung Cell. Mol.
Physiol., 2000, 278, L631-9). Briefly, 1 hour after treatment with
10 mg/kg of Dexamethasone or 2 mg/kg of Compound 9, mice were
anesthetized, a midline incision was made in the neck, the muscle
layers separated by blunt dissection, and 1 ml/kg LPS (20 mg/kg) or
vehicle injected into the trachea. The incision was closed with
wound clips and the mice returned to cages.
[0308] Six hours after LPS/saline injection, the mice were
anesthetized, the wound clips removed, the trachea was cannulated
with a 23G blunt needle, and the lungs lavaged eight times with 0.5
ml heparinized saline. The lavage was pooled, gently inverted, and
a sample retained for white blood cell (WBC) differential analysis.
The remainder of the lavage was centrifuged, the supernatants used
for cytokine analysis. Compound 9 showed a significant reduction in
neutrophil infiltration and a diminution of IL-6 and TNF-.alpha.
levels compared to controls (FIG. 8).
EXAMPLE 22
Inhibition of Lung Allergic Inflammation of Viral Infected Mice
[0309] Early-life respiratory viral infections, notably with
respiratory syncytial virus (RSV), increase the risk of subsequent
development of childhood asthma. Infection with pneumonia virus of
mice (PVM), which belongs to the same family (Paramyxoviridae) and
genus (Pneumovirus) as RSV, provides a model of RSV disease (see
Rosenberg, H. F. et al., The pneumonia virus of mice infection
model for severe respiratory syncytial virus infection: identifying
novel targets for therapeutic intervention. Pharmacol. Ther., 2005,
105, 1-6). Allergic airway inflammation, including recruitment of
eosinophils, is prominent in animals that are neonatally infected
with PVM and then challenged with OVA antigen (see Siegle, J. S. et
al., Early-life viral infection and allergen exposure interact to
induce an asthmatic phenotype in mice. Respir. Res., 2010,
11,14).
[0310] On both days 1 and 2 of life, mice are intranasally
inoculated with 2 pfu (PVM J3666 strain .about.1.times.10.sup.5
pfu/mL) in 5 .mu.L phosphate buffered saline (PBS) on the external
nares. Control animals are sham-infected with PBS alone. Intranasal
sensitisation to OVA is performed either at days 1 and 2 of life or
at days 28 and 29, with 5 .mu.g OVA/5 .mu.L PBS or 100 .mu.g/40
.mu.L respectively. Mice receive low-level aerosol challenge with
ovalbumin (mass concentration of .apprxeq.3 mg/m3 of ovalbumin for
30 min/day, 3 days/week for 4 weeks). This is followed by a single
moderate-level challenge (.apprxeq.30 mg/m.sup.3 for 30 minutes) to
induce the changes of an acute exacerbation. The purpose of this
study is to assess anti-inflammatory effect of the compound
(0.1-100 mg/kg) in mice that are predisposed to the development of
features of asthma due to early-life infection.
[0311] Bronchoalveolar lavage (BAL) is performed for recovery of
airway luminal cells. This procedure is achieved by intratracheal
instillation of 800 .mu.L of PBS/mouse. The total number of
leukocytes is counted using a haemocytometer. Cytospin slides are
prepared from BAL fluid and then stained with Wright-Giemsa stain
for differential cell count. Cells are classified into mononuclear
cells, eosinophils, neutrophils and lymphocytes according to
standard morphologic criteria and at least 200 cells were counted
per slide under light microscopy. For lung histology, lungs are
perfused, inflated and fixed in 10% buffered formalin before
immunohistochemichal analysis. The extent of the leukocyte
infiltrate is scored as 0, minimal or no inflammation; 1, mild
inflammation, only perivascular or peribronchiolar; 2, moderate
inflammation, some parenchymal involvement; 3, marked inflammation,
widespread parenchymal involvement; 4, severe inflammation as
previously described. Compounds are administered at 0.1 mg/kg-100
mg/kg and animals show a reduction of 40-80% in neutrophil
infiltration, diminution of IL-6 and TNFa of up to 30% compared to
controls.
EXAMPLE 23
Inhibition of Exacerbation in an HDM-Induced Asthma Model
[0312] Respiratory infections, which are predominantly caused by
rhinovirus in people with asthma, exacerbate airway inflammation
and further contribute to disease burden and healthcare cost. The
rhinovirus exacerbated house dust mite (HDM) model was used to
study the effect of Compound 23 in a model of allergic asthma
(Collison, A. et al. The E3 ubiquitin ligase midline 1 promotes
allergen and rhinovirus-induced asthma by inhibiting protein
phosphatase 2A activity. Nat. Med. 2013, 19(2): 232-7).
[0313] Mice were sensitized and challenged by exposing them
intranasally to crude HDM extract (50 .mu.g daily at days 0, 1 and
2 followed by four exposures of 5 .mu.g HDM daily from day 14 to
day 17 delivered in 50 .mu.l of sterile saline). Animals were
infected (day 18, 1 d after last HDM extract challenge) with 50
.mu.l infective or ultraviolet light (UV)-inactivated RV1B41
(2.5.times.106 median tissue culture infective dose) intranasally.
Compounds were dosed at 0.1-100 mg/kg 1 hour prior to rhinovirus
challenge. Mice were killed 24 h after the last allergen or
rhinovirus challenge. Cytospin slides were prepared from
Bronchoalveolar lavage fluid and then stained with Wright-Giemsa
stain for differential cell count. Cells are classified into
mononuclear cells, eosinophils, neutrophils and lymphocytes
according to standard morphologic criteria and at least 200 cells
were counted per slide under light microscopy. Animals treated with
Compound 23 at 6 mg/kg showed a significant reduction in neutrophil
infiltrate in the BALF (FIG. 9A) and reduced airway hyper
reactivity in response to metacholine challenge back to that of the
control group (FIG. 9B).
EXAMPLE 24
Inhibition of Cutaneous Inflammation in the SCID Mouse Model of
Psoriasis
[0314] Psoriasis is a common inflammatory skin disease
characterized by abnormal epithelial differentiation, extensive
capillary formation in the papillary dermis, and accumulation of
inflammatory leukocytes including T lymphocytes, NK lymphocytes,
and granulocytes. Transplantation of human skin onto
immunocompromised mice (severe combined immunodeficiency [SCID]
mice) provides a model to study psoriasis. Using this approach,
epidermal thickening, extensive rete peg formation, and presence of
inflammatory cells are maintained for an extended period in the
transplanted skin (see Zeigler, M. et al., Anti-CD11a ameliorates
disease in the human psoriatic skin-SCID mouse transplant model:
comparison of antibody to CD11a with Cyclosporin A and clobetasol
propionate. Lab. Invest, 2001, 81, 1253-1261 and Nickoloff, B. J.
et al., Severe combined immunodeficiency mouse and human psoriatic
skin chimeras. Validation of a new animal model. Am. J. Pathol.,
1995, 146, 580-588).
[0315] SCID mice (6-8 weeks old) are prepared for orthotopical skin
xenografts. Human skin xenografts (measuring
1.5.times.1.5.times.0.05 cm) are sutured to the flank area of each
SCID mouse with absorbable Dexon suture. Dressings are changed
every 2 days, and animals are maintained pathogen-free throughout
the study. Human skin/SCID mice chimeras are sacrificed at 4 or 6
weeks after xenograft transplantation (as this period of time
assured adequate acceptance and healing). Xenograft biopsies are
processed for cytokine ELISA as well as histopathology analysis.
After transplantation, compound treated group (0.1-100 mg/kg) show
a 20-50% reduction in inflammation in the dermis and epidermis,
compared with the vehicle-treated group. In addition, cytokines
such as IL-6 and TNFa are inhibited by up to 80% by compound
treatment.
EXAMPLE 25
Antimicrobial Activity-Klebsiella Pneumoniae Infection
[0316] The efficacy of the compound was investigated in a model of
pulmonary infection caused by the Gram-negative bacterium
Klebsiella pneumoniae. The outcomes were the differences between
compound and control in lethality rates, bacterial counts and
inflammatory indices following pulmonary infection of mice (see
Soares, A. C. et al., Dual function of the long pentraxin PTX3 in
resistance against pulmonary infection with Klebsiella pneumoniae
in transgenic mice. Microbes Infect., 2006, 8, 1321-1329.).
[0317] BALB/c mice (8 weeks old) were divided in 3 groups; 2
infected and 1 uninfected. Infected groups: Group A, animals were
administered vehicle orally; Group B, animals were administered 2
mg/kg of compound orally; and Group C animals were uninfected.
Broncheoalveolar lavage fluid (BALF) was collected to determine
total number of leukocytes. Cytospin slides were prepared from BAL
fluid and then stained with Wright-Giemsa stain for differential
cell count. Cells are classified into mononuclear cells,
eosinophils, neutrophils and lymphocytes according to standard
morphologic criteria and at least 200 cells were counted per slide
under light microscopy. For bacterial counts, lung was homogenised,
serially diluted and plated on MacConkey agar plates. Colony
forming units were counted at the end of 24 hours incubation at
37.degree. C. Animal survival rates were recorded for the next 10
days.
[0318] Compared with the vehicle-treated group that showed a 45%
lethality incidence, Compound 23 treated mice showed a
statistically significant reduction in lethality with 100% of mice
surviving (p=0.0597) after 8 days (FIG. 10A). In addition, the
inhibitory effect of Compound 23 on the inflammatory component of
disease was seen in reduced leukocyte infiltrate to the BALF (FIG.
10B).
EXAMPLE 26
Inhibition of Chronic Obstructive Pulmonary Disease
[0319] Chronic Obstructive Pulmonary Disease (COPD) is a
debilitating disorder of the lung. The disease is characterized by
chronic airway inflammation, mucus hypersecretion, airway
remodeling, and emphysema, which lead to reduced lung function and
breathlessness. Airflow limitation is usually both progressive and
associated with an abnormal inflammatory response of the lungs to
noxious gases and particles. Cigarette smoke elicits a repetitive
inflammatory insult that is believed to, through the actions of
mediators such as proteinases, lead to structural and functional
changes in the lung. Moreover, patients with COPD are more
susceptible to respiratory tract infections (see Beckett, E. L., A
new short-term mouse model of chronic obstructive pulmonary disease
identifies a role for mast cell tryptase in pathogenesis. J Allergy
Clin Immunol. 2013 Mar; 131(3):752-762.e7; Guerassimov, A., The
Development of Emphysema in Cigarette Smoke-exposed Mice Is Strain
Dependent. Am. J. Respir. Crit. Care Med. Nov. 2004 (170) 974-980
and Morris, A., Comparison of Cigarette Smoke-Induced Acute
Inflammation in Multiple Strains of Mice and the Effect of a Matrix
Metalloproteinase Inhibitor on These Responses. JPET December 2008
(327) 851-862).
[0320] BALB/c mice were simultaneously exposed to cigarette smoke
(twelve 3R4F reference cigarettes [University of Kentucky,
Lexington, Ky.] twice per day and 5 times per week for 1 to 12
weeks) by using a custom-designed and purpose-built nose-only,
directed-flow inhalation and smoke-exposure system (CH
Technologies, Westwood, N.J.) housed in a fume and laminar flow
hood. Each exposure lasted 75 minutes. Nose-only exposure was
achieved by using specialized containment tubes that delivered
smoke and normal air directly to the animal's nose. This protocol
allowed a more intensive delivery of smoke than whole-body exposure
systems. For the first 2 days, mice were exposed to 1 session of
smoking with 12 puffs from each cigarette to allow acclimatization.
Smoke was delivered in 2-second puffs, with 30 seconds of normal
air between each puff. After day 2, the mice were subjected to 2
sessions in which they were exposed to the smoke from 12 cigarettes
(morning and afternoon, separated by a recovery period). Compound
23 was given at 2 mg/kg from week 6 onwards of the experimental
procedure and significantly inhibited lung collagen content (FIG.
11).
EXAMPLE 27
Inhibition of CC14 Induced Liver Fibrosis
[0321] An analysis of the use of YAP-1/SSAO inhibitors to treat
inflammatory/fibrotic diseases is performed through the use of a
CCl.sub.4 induced liver fibrosis model. Liver injury is frequently
followed by complete parenchymal regeneration due to regenerative
potency of hepatocytes. However, the concomitant activation of
fat-storing cells leads to extracellular matrix accumulation
accompanied by recurrent hepatocyte necrosis, inflammation, and
regenerative processes, and causes liver fibrosis and consequently
liver cirrhosis (see Natsume, M. et al., Attenuated liver fibrosis
and depressed serum albumin levels in carbon tetrachloride-treated
IL-6-deficient mice. J. Leukoc. Biol., 1999, 66,. 601-608.).
[0322] Liver fibrosis in the male Sprague Dawley (SD) rats was
induced by oral application of CCl.sub.4 (2.5 .mu.L/g of CCl.sub.4
olive solution, 3 times a week). Vehicle (PBS), and the positive
control imatinib mesylate (2.5 mg/kg) were given to the rats from
day 1 to day 28, and Compound 23 (6 mg/kg) was given to the rats
from day 14 to day 28. Compound 23 demonstrated a clear trend of
decreased levels of fibrotic tissue, as represented by a decrease
in Sirius red staining (FIG. 12C). Moreover, Compound 23 showed
liver function protective effects and a reduction in inflammation
which were evidenced by significantly decreased levels of serum ALT
and AST (FIG. 12A & 12B) and a reduction in inflammatory score
(12D) when compared to the CCl.sub.4 only group.
EXAMPLE 28
Inhibition of Non-Alcoholic Steatohepatitis (NASH) Induced Liver
Fibrosis
[0323] An analysis of the use of YAP-1/SSAO inhibitors to treat
inflammatory/fibrotic diseases is performed through the use of a
non-alcoholic steatohepatitis (NASH) induced liver fibrosis model.
STAM model of NASH was induced in 30 male mice by a single
subcutaneous injection of streptozotocin solution 2 days after
birth and feeding with high fat diet (HFD, 57 kcal % fat) after 4
weeks of age to 10 weeks of age. From 7 weeks of age mice were
orally administered daily dose of vehicle (PBS), Compound 23 (6
mg/kg) or the positive control Telmisartan (10 mg/kg) for 3 weeks.
Compound 23 reduced both inflammation and non-alcoholic fatty liver
disease (NAFLD) scores upon clinical examination (FIG. 13A &
13B). Fibrosis, as evidenced by a reduction of Sirius red-positive
area (FIG. 13C) was also reduced.
EXAMPLE 29
Inhibition of Uveitis
[0324] This procedure is to determine inhibition of uveitis by
compound(s) according to the invention. Uveitis is a complex
inflammatory eye disease that can lead to blindness. It can affect
any part of the eye and is characterized by the accumulation of
leukocytes in ocular tissues. Current therapies for uveitis include
corticosteroids and chemotherapeutic agents to reduce inflammation.
However, the grave side effects of these drugs, such as increased
intraocular pressure or cytotoxicity limit their use (see Moorthy,
R. S. et al., Glaucoma associated with uveitis. Surv. Ophthalmol.,
1997, 41, 361-394 and Lightman, S., New therapeutic options in
uveitis. Eye 1997, 11, 222-226).
[0325] Thirty (30) Lewis albino rats were divided into four (4)
groups. For three groups out of 4, ocular inflammation was induced
by a single footpad injection of 1 mg/kg lipopolysaccharide (LPS
from Salmonella Typhimurium). Compound 23 (2 mg/kg) and vehicle
were administered by oral gavage (1 ml/kg) 1 hour before induction
(Day 0). Reference item (dexamethasone, 2 mg/kg) was administered
by intravenous injection (2.5 ml/kg) just after induction (Day 0).
Ocular inflammation was assessed by clinical examination and
quantification of neutrophils, eosinophils and proteins in aqueous
humor, 24 h after induction.
[0326] Clinical Examination of Inflammation; Animals were examined
with a slit-lamp at baseline (Day -1) then 24 h after induction
(Day 1). The inflammation in each animal was graded using a scoring
system as described (Devos A. et al., Systemic antitumor necrosis
factor antibody treatment exacerbates Endotoxin Induced Uveitis in
the rat. Exp. Eye. Res. 1995; 61: 667-675.). Flare, miosis and
hypopion were scored for absence (0), or presence (1), iris
hyperemia and cells in the anterior chamber were scored for absence
(0), or mild (1) or severe presence (2). The maximum score (sum of
the five parameter scores) is 7. In the group treated with Compound
23, a 33% reduction in the severity of the ocular inflammation,
compared with the score observed for the vehicle group, was
detected 24 hours after induction and 25 hours after oral
administration (FIG. 14A).
[0327] At the end of the clinical evaluation (24 h after
induction), animals were anesthetized by an intramuscular injection
of a mixed solution of Rompun.RTM. (xylazine) and Imalgene.RTM.
1000 (ketamine) and euthanized by cardiac injection of overdosed
pentobarbital. The aqueous humor was collected immediately for each
eye.
[0328] Quantification of Cellular Infiltration in Aqueous Humor;
Infiltrated neutrophils and eosinophils were manually counted in
cytological preparation of aqueous humor samples diluted 10-fold
with PBS before Giemsa staining. A significant diminution in
eosinophils (mean.+-.SEM: 8.9.+-.1.7 cells/.mu.L, n=20) was
observed for the group treated with Compound 23 versus the group
treated with the vehicle (p=0.033) (FIG. 14B).
EXAMPLE 30
Inhibition of Macular Degeneration
[0329] Age-related macular degeneration (AMD) is the leading cause
of blindness and occurs in two major forms. The first is a
geographic atrophy (`dry`) form that is defined by degeneration of
photoreceptors and the retinal pigmented epithelium (RPE) near the
macula, the accumulation of lipofuscin (A2E), and the formation of
drusen. The second is a `wet` form that is associated with
choroidal neovascularization (see Randazzo, J. et al., Orally
active multi-functional antioxidants are neuroprotective in a rat
model of light-induced retinal damage. PLoS One, 2011, 6 e21926 and
Davis, S. J. et al., The Effect of Nicotine on Anti-Vascular
Endothelial Growth Factor Therapy in a Mouse Model of Neovascular
Age-Related Macular Degeneration. Retina, 2011).
[0330] Model A: Light Model
[0331] After two weeks of dark adaptation, rats from each group are
exposed to damaging light for three hours to 1000 1x of cool white
fluorescent light (light-damaged rats, LD). The control rats in
each group are also placed into the light box apparatus for three
hours, but not exposed to light (non-light-damaged rats, NLD).
Oxidative stress markers were evaluated immediately after light
exposure. Compound treated animals 0.1-100 mg/kg show >20%
reduction in oxidative stress as seen by evaluation of neural
retinas, which are dissected--following euthanasia--from the
enucleated eye. For functional and morphological assessment, rats
are returned to the dark environment after exposure and retinal
function is assessed by ERG, 5 to 7 days later. Following ERG
analysis, the rats are euthanized and the enucleated eyes are
immediately processed for quantitative morphology. Compound treated
group demonstrate a reduction in severity of disease as seen by
decreases in morphological changes of the eyes as compares to
control animals.
[0332] Model B: Laser Model
[0333] CNV is induced by laser photocoagulation in mice with an
argon laser (spot size, 50 mm; duration, 0.05 seconds; power, 260
mW). Three laser spots are placed in each eye close to the optic
nerve. Production of a vaporization bubble at the time of laser
confirmes the rupture of BM. Animals from each group are sacrificed
on days 1, 3, 5, and 7 post-laser. Compared with control, the
compound-treated mice (0.1-100 mg/kg) show a significant reduction
in size (by 20%) and incidence of CNV (>40%) as determined by
microscopy.
EXAMPLE 31
Inhibition of Cancer Progression
[0334] B16F10 melanoma cells (4.times.10.sup.5 cells/animal) are
injected in the shaved adnominal region of the animal as described
in Marttila-Ichihara, F. et al., Small-Molecule Inhibitors of
Vascular Adhesion Protein-1 Reduce the Accumulation of Myeloid
Cells into Tumors and Attenuate Tumor Growth in Mice. The Journal
of Immunology, 2010, 184, 3164-3173. The growth of the tumor is
followed by measuring the dimensions using electronic callipers.
Tumor progression is diminished in compound treated animals
(0-1.-100 mg/kg), with up to 25% less tumor growth when compared to
control group. Compound treated groups show attenuated myeloid cell
accumulation in the tumors, showing >40% less cell infiltration;
in addition treated mice demonstrate inhibited neoangiogenesis.
[0335] All patents and other references cited in the specification
are indicative of the level of skill of those skilled in the art to
which the invention pertains, and are incorporated by reference in
their entireties, including any tables and figures, to the same
extent as if each reference had been incorporated by reference in
its entirety individually.
[0336] One skilled in the art would readily appreciate that the
present invention is well adapted to obtain the ends and advantages
mentioned, as well as those inherent therein. The methods,
variances, and compositions described herein as presently
representative of preferred embodiments are exemplary and are not
intended as limitations on the scope of the invention. Changes
therein and other uses will occur to those skilled in the art,
which are encompassed within the spirit of the invention, are
defined by the scope of the claims.
[0337] It will be readily apparent to one skilled in the art that
varying substitutions and modifications may be made to the
invention disclosed herein without departing from the scope and
spirit of the invention. For example, variations can be made to
provide additional compounds of Formula I and/or various methods of
administration can be used. Thus, such additional embodiments are
within the scope of the present invention and the following
claims.
[0338] The invention illustratively described herein suitably may
be practiced in the absence of any element or elements, limitation
or limitations which is not specifically disclosed herein. The
terms and expressions which have been employed are used as terms of
description and not of limitation, and there is no intention that
in the use of such terms and expressions of excluding any
equivalents of the features shown and described or portions
thereof, but it is recognized that various modifications are
possible within the scope of the invention claimed. Thus, it should
be understood that although the present invention has been
specifically disclosed by preferred embodiments and optional
features, modification and variation of the concepts herein
disclosed may be resorted to by those skilled in the art, and that
such modifications and variations are considered to be within the
scope of this invention as defined by the appended claims.
[0339] In addition, where features or aspects of the invention are
described in terms of Markush groups or other grouping of
alternatives, those skilled in the art will recognize that the
invention is also thereby described in terms of any individual
member or subgroup of members of the Markush group or other
group.
[0340] Also, unless indicated to the contrary, where various
numerical values are provided for embodiments, additional
embodiments are described by taking any 2 different values as the
endpoints of a range. Such ranges are also within the scope of the
described invention.
[0341] Thus, additional embodiments are within the scope of the
invention and within the following claims.
* * * * *