Abstract:
Process for manufacture and resolution of 2-acylamino-3-diphenylpropanoic acid and intermediates useful in the synthesis of pharmaceutically active compounds, in particular neutral endopeptidase (NEP) inhibitors.
Abstract:
A method for preparing a phenylalanine derivative having a quinazoline-dione ring represented by the following formula (1) or a pharmaceutically acceptable salt thereof, comprising the following steps (a), (b) and (c):
(a) reacting an acyl phenylalanine derivative represented by the following formula (2):
with a carbonyl group-introducing reagent and a specific anthranilic acid derivative to thus form the corresponding carboxy-asymmetric urea derivative; (b) converting the carboxy-asymmetric urea derivative into the corresponding quinazoline-dione derivative in the presence of a carboxyl group-activating agent: (c) if desired, substituting an N-alkyl group for the hydrogen atom bonded to the nitrogen atom present in the quinazoline-dione ring of the quinazoline-dione derivative using an N-alkylation agent and then deprotecting the resulting product, when the substituent R3' which is a group corresponding to R3 is protected. According to this method, there can be obtained a phenylalanine derivative having a quinazoline-dione skeleton in a industrially favorably high yield.
Abstract:
The present invention relates to compounds of the general formula I wherein R1 is lower alkyl, aryl or heteroaryl, wherein aryl and heteroaryl are optionally substituted by halogen, lower alkyl, lower alkoxy, lower alkyl substituted by halogen, lower alkoxy substituted by halogen, cyano, amino, di-lower alkyl amino or morpholinyl; R2 is lower alkyl, -(CH2)n-aryl, -(CH2)n-heteroaryl or -(CH2)n-cycloalkyl, wherein the aryl or heteroaryl groups are optionally substituted by one or more substituents, selected from the group consisting of halogen, lower alkyl, cyano, or lower alkoxy; R3 is hydrogen or lower alkyl; R4 is aryl or heteroaryl, wherein at least one ring is aromatic in nature, wherein aryl and heteroaryl are optionally substituted by one or more substituents, selected from the group consisting of halogen, lower alkyl substituted by halogen, lower alkoxy substituted by halogen, lower alkyl; X is a bond or -OCH2-; n is 0, 1 or 2; or to pharmaceutically acceptable acid addition salts thereof, with the exception of 4-methoxy-N-[2-oxo-2-(phenylamino)ethyl]-N-phenyl-benzamide, 4-chloro-N-[2-[(4-methylphenyl)amino]-2-oxoethyl]-N-phenyl-benzamide, 4-chloro-N-[2-[5-chloro-2-methoxyphenyl)amino]-2-oxoethyl]-N-benzamide, 4-methyl-N-(2-oxo-2-[(2,4,6-trichlorophenyl)amino]ethyl]-N-benzamide, N-[2-[(4-methylphenyl)amino]-2-oxoethyl]-N-phenyl-benzamide, 4-methyl-N-[2-[(4-methylphenyl)amino]-2-oxoethyl]-N-phenyl-benzamide, 4-chloro-N-(2-oxo-2-[(2,4,6-trichlorophenyl)amino]ethyl]-N-benzamide and N-[2-[(2, 4-dimethoxyphenyl)amino]-2-oxoethyl]-N-[(2-fluorophenyl)methyl]- benzeneacetamide. and to their use in the treatment of neurological and neuropsychiatric disorders.
Abstract:
Compounds represented by the following general formula (I), prodrugs thereof, salts thereof and drugs containing the same as the active ingredient: (I) wherein each symbol has the meaning as defined in the specification. Because of having an EDG-1 agonism, the compounds of the general formula (I) are useful in preventing and/or treating arteriosclerosis obliterans, thromboangiitis obliterans, Buerger’s disease, peripheral arterial disease of diabetic neuropathy, sepsis, angiitis, nephritis, pneumonia, brain infarction, myocardial infarction, edematous diseases, arteriosclerosis, hemorrhoid, anal fissure, varicosity such as anal fistula, dissecting aneurysm, angina, DIC, pleuritis, congestive heart failure, multiorgan failure, bedsore, ambustion, ulcerative colitis, Crohn’s disease, heart transplantation, kidney transplantation, skin transplantation, liver transplantation, osteoporosis, pulmonary fibrosis, interstitial pneumonia, chronic hepatitis, cirrhosis, chronic renal failure or glomerular sclerosis.
Abstract:
The present invention relates to novel phenyl-N-acyl derivatives of biogenic amines and amino acids of general formula (I) as cyclooxynease inhibitors, possessing analgetic and anti-inflammatory properties and devoid of side effects in particular ulcerogeneity and pro-spasmodic actions, as well as capability to potentiate effect of other analgetics, and possessing in addition antihypoxic, antidepressant and anti-Parkinsonistic action; as well as to the processes for the preparation novel and known phenyl-N-acyl derivatives of biogenic amines, to a pharmaceutical composition and to an agent comprising compounds of general formula (I) as well as to use thereof and a method of treating.
Abstract:
The present invention provides a production method including reacting a diphenylmethylene halide compound represented by the following formula (1) with a malonic acid diester compound represented by the following formula (2) in an organic solvent selected from N-methyl-2-pyrrolidone, N-ethyl-2-pyrrolidone and N,N-dimethylformamide, in the presence of a base selected from an alkali metal hydride and an alkali metal t-butoxide to give a diester compound represented by the following formula (3), and then subjecting the diester compound to hydrolysis and decarboxylation to give a diphenylalanine compound represented by the following formula (4). According to the present invention, diphenylalanine compound (4) can be obtained industrially advantageously in a high yield.
wherein each symbol is as defined in the specification.
Abstract:
Process for producing amino acid derivatives, in which (a) an organic amine, the amino functionality of which is protected, or an α-amino acid, the amino functionality of which is protected, is subjected to an electrochemical reaction so as to form an amine which is activated in the α-position; (b) the activated amine is subjected to a reaction with a carbanionic reagent containing at least 3 carbon atoms and comprising an unsaturated group so as to form an unsaturated amine comprising an unsaturated group, the atom of the unsaturated group closest to the nitrogen being separated from the nitrogen by at least 2 carbon atoms; (c) the unsaturated amine is subjected to oxidation of the unsaturated group so as to form an amino acid derivative.
Abstract:
The present invention is related to the preparation and pharmaceutical use of novel benzamide derivatives as defined in the specification of formula (I) as histone deacetylase inhibitors (HDACI), their preparations and the methods of using these compounds or their pharmaceutically acceptable salt in the treatment of cell proliferative diseases, e.g. cancer and psoriasis.