摘要:
The present invention is a process for the preparation of diphenylazetidinone derivatives of the formula (I) or forms thereof comprising the substituents X, R1 and/or R2 as defined herein. More specifically, the invention comprises methods for the preparation of these compounds by cyclization of certain β-amino carboxamides or β-amino carboxylic esters. These diphenylazetidinone compounds are useful in the treatment of high blood serum cholesterol levels and the maintenance of the reduced cholesterol levels achieved thereby.
摘要:
The present invention is a process for the preparation of diphenylazetidinone derivatives of the formula (I) or forms thereof comprising the substituents X, R1 and/or R2 as defined herein. More specifically, the invention comprises methods for the preparation of these compounds by cyclization of certain □-amino carboxamides or □-amino carboxylic esters. These diphenylazetidinone compounds are useful in the treatment of high blood serum cholesterol levels and the maintenance of the reduced cholesterol levels achieved thereby.
摘要:
The present invention is directed to the preparation of novel compounds useful in the treatment of hyperlipidemia, arteriosclerosis, hypercholesterolemia, and other related metabolic disorders. More specifically, the present invention is a novel process for the preparation of 1,4-diphenylazetidinone derivatives from β-substituted amino amides which are protected in the presence of silylating agents and at least one cyclization catalyst whose structural formula is represented by one of the general formula: wherein the various R-groups are defined herein.
摘要:
The invention relates to a method for producing enantiomeris form of 2,3-diaminopropionic acid derivatives of formula (I) by asymetric hydrogenation from compounds of formula (II).
摘要:
This disclosure relates to a novel process for obtaining a compound of formula I: wherein the values of R1, R2, and R3 and P are as described in the specification, and intermediates thereof.
摘要:
The invention relates to a method for producing enantiomeris form of 2, 3-diaminopropionic acid derivatives of formula (I) by asymetric hydrogenation from compounds of formula (II).
摘要:
The invention 8-aminothioxanthines and the derivatives of formula I wherein the various R groups and substituents are comprised of a number of different (C1-C10)-alkyl, cycloalkyl, aryl, alkene, alkyne, etc. groups and derivatives thereof which are hereinafter more specifically defined for the treatment of metabolic disorders such as type-2 diabetes, hyperglycemia, arteriosclerotic diseases and the like.
摘要:
This invention relates to a novel process for obtaining a compound of formula I: wherein the values of R1, R2, and R3 and P are as described in the specification.