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.
Transaminases Applied to the Synthesis of High Added-Value Enantiopure Amines
作者:Caroline E. Paul、María Rodríguez-Mata、Eduardo Busto、Iván Lavandera、Vicente Gotor-Fernández、Vicente Gotor、Susana García-Cerrada、Javier Mendiola、Óscar de Frutos、Iván Collado
DOI:10.1021/op4003104
日期:2014.6.20
stereoselective amination of (hetero)aromatic ketones using transaminases have been studied, such as temperature, pH, substrate concentration, cosolvent, and source and percentage of amino donor, to further optimize the production of enantiopure amines using both (S)- and (R)-selective biocatalysts from commercial suppliers. Interesting enantiopure amino buildingblocks have been obtained, overcoming some limitations
Highly Enantioselective Borane Reduction of Heteroaryl and Heterocyclic Ketoxime Ethers Catalyzed by Novel Spiroborate Ester Derived from Diphenylvalinol: Application to the Synthesis of Nicotine Analogues
作者:Kun Huang、Francisco G. Merced、Margarita Ortiz-Marciales、Héctor J. Meléndez、Wildeliz Correa、Melvin De Jesús
DOI:10.1021/jo800204n
日期:2008.6.1
An asymmetric synthesis for the preparation of nonracemic amines bearing heterocyclic and heteroaromatic rings is described. A variety of important enantiopure thionyl and arylalkyl primary amines were afforded by the borane-mediated enantioselective reduction of O-benzyl ketoximes using 10% of catalyst 10 derived from (S)-diphenylvalinol and ethylene glycol with excellent enantioselectivity, in up
描述了制备带有杂环和杂芳环的非外消旋胺的不对称合成。使用 10%衍生自 ( S )-二苯基缬氨醇和乙二醇的催化剂10 ,通过硼烷介导的对映选择性还原O-苄基酮肟,得到各种重要的对映纯亚硫酰基和芳烷基伯胺,具有优异的对映选择性,高达 99% ee 。首次不对称还原 3- 和 4-吡啶基衍生的O-苄基酮肟醚的最佳条件是在 10 °C 下在二恶烷中使用 30% 的催化负载量实现的。( S ) -N-乙基降烟碱 ( 3 ) 也由 TIPS 保护的 ( S )-2-氨基-2-吡啶乙醇在 97% ee 中成功合成。
Asymmetric Biocatalytic Amination of Ketones at the Expense of NH<sub>3</sub> and Molecular Hydrogen
作者:Anja K. Holzer、Katharina Hiebler、Francesco G. Mutti、Robert C. Simon、Lars Lauterbach、Oliver Lenz、Wolfgang Kroutil
DOI:10.1021/acs.orglett.5b01154
日期:2015.5.15
A biocatalytic system is presented for the stereoselective amination of ketones at the expense of NH3 and molecular hydrogen. By using a NAD(+)-reducing hydrogenase, an alanine dehydrogenase, and a suitable omega-transaminase, the R- as well as the S-enantiomer of various amines could be prepared with up to >99% ee and 98% conversion.
[EN] CATALYTIC ASYMMETRIC SYNTHESIS OF PRIMARY AMINES VIA BORANE REDUCTION OF OXIME ETHERS USING SPIROBORATE ESTERS<br/>[FR] SYNTHÈSE ASYMÉTRIQUE CATALYTIQUE D'AMINES PRIMAIRES PAR RÉDUCTION AU BORANE D'ÉTHERS D'OXIME AU MOYEN D'ESTERS DE SPIROBORATE