HEPATITIS C VIRUS INHIBITORS AND USES THEREOF IN PREPARATION OF DRUGS
申请人:CHANGZHOU YINSHENG PHARMACEUTICAL CO., LTD.
公开号:US20170253614A1
公开(公告)日:2017-09-07
A series of hepatitis C virus (HCV) inhibitors and compositions and applications thereof in the preparation of drugs for treating chronic HCV infection. Especially, a series of compounds that are used as NS5A inhibitors, and compositions and uses thereof in the preparations of drugs.
Tandem Oxidation of Allylic and Benzylic Alcohols to Esters Catalyzed by N-Heterocyclic Carbenes
作者:Brooks E. Maki、Audrey Chan、Eric M. Phillips、Karl A. Scheidt
DOI:10.1021/ol062940f
日期:2007.1.1
N-heterocyclic carbenes catalyze the oxidation of allylic, propargylic, and benzylicalcohols to esters with manganese(IV) oxide in excellent yields. A variety of ester derivatives can be synthesized, including protected carboxylates. This one-pot tandemoxidation represents the first organocatalytic oxidation of alcohols to esters. Saturated esters can also be accessed from aldehydes using this method
A stereoselective synthesis of substituted maleic esters by use of phosphonates
作者:R. K. Huff、C. E. Moppett、J. K. Sutherland
DOI:10.1039/j39680002725
日期:——
The condensation of α-keto-esters with the anions of α-phosphonato-esters yields mainly substituted maleic esters and little or none of the corresponding fumarates.
α-酮酯与α-膦酰基酯的阴离子的缩合主要产生取代的马来酸酯,很少或没有相应的富马酸酯。
Enzymatic Selective Transformations of Diethyl Fumarate
Candida antarctica lipase selectively catalyses transformations of diethyl fumarate in organic solvents. A range of nitrogen nucleophiles, including ammonia, can be succesfully used in these enzymatic reactions, monoamides and monohydrazides being obtained in high to moderate yields. In contrast, diethyl maleate is not an adequate substrate for this enzyme.
Compounds of Formula (I) are disclosed; wherein X
A
, k, A, B, R
3A
, R
3B
, R
4
and R
5
are defined herein. The compounds of Formula (I) are HIV protease inhibitors. The compounds and their pharmaceutically acceptable salts are useful for the prophylaxis or treatment of infection by HIV and the prophylaxis, treatment, or delay in the onset of AIDS. The compounds and their salts can be employed as ingredients in pharmaceutical compositions, optionally in combination with other antivirals, immunomodulators, antibiotics or vaccines.