Described are compounds of the general formula (I)
and pharmaceutically acceptable salt thereof, in which R2, R3, W,and X have the definitions illustrated in detail in the description, as beta-secretase, cathepsin D, plasmepsin II and/or HIV protease inhibitors.
Direct Regiospecific and Highly Enantioselective Intermolecular α-Allylic Alkylation of Aldehydes by a Combination of Transition-Metal and Chiral Amine Catalysts
The first direct intermolecular regiospecific and highlyenantioselective α‐allylic alkylation of linear aldehydes by a combination of achiral bench‐stable Pd0 complexes and simple chiralamines as co‐catalysts is disclosed. The co‐catalytic asymmetric chemoselective and regiospecific α‐allylic alkylation reaction is linked in tandem with in situ reduction to give the corresponding 2‐alkyl alcohols
首次公开了通过非手性稳固的Pd 0配合物和简单的手性胺作为助催化剂的组合,线性醛类的第一个直接的分子间区域特异性和高对映选择性的α-烯丙基烷基化反应。将共催化的不对称化学选择性和区域特异性α-烯丙基烷基化反应与原位还原串联在一起,得到相应的2-烷基醇,其对映体比率很高(er高达98:2; er =对映体比率)。它也是有价值的2-烷基取代的半缩醛,2-烷基-丁烷-1,4-二醇和胺的快速入口。公开了具有生物活性的天然产物(例如,Arundic酸)的简明共催化不对称全合成。
SUBSTITUTED 4-PHENYLPIPERIDINES
申请人:Herold Peter
公开号:US20090029981A1
公开(公告)日:2009-01-29
The application relates to substituted 4-phenylpiperidines of the general formula and their salts, preferably their pharmaceutically acceptable salts, in which R
2
, R
3
, W and X have the meanings explained in the description, a process for their preparation and the use of these compounds as medicines, especially as renin inhibitors.
Asymmetric synthesis of 1,3- and 1,3,4-substituted pyrrolidines
作者:Jing Lin、Wing Hong Chan、Albert W.M Lee、Wai Yeung Wong、Pei Qiang Huang
DOI:10.1016/s0040-4039(00)00278-1
日期:2000.4
Diastereoselective alkylation of N-acylnorbornene sultams 2 afforded a variety of enantiomerically pure products 3a-3e. Reduction with LiAlH4 (LAH) followed by ditosylation furnished chiral 1,4-ditosylates 5a-5e which underwent a cyclization reaction with primary amines to afford chiral 1,3- and 1,3;4-substituted pyrrolidines. (C) 2000 Elsevier Science Ltd. All rights reserved.
[EN] The application relates to substituted 4-phenylpiperidines of the general formula and their salts, preferably their pharmaceutically acceptable salts, in which R2, R3, W and X have the meanings explained in the description, a process for their preparation and the use of these compounds as medicines, especially as renin inhibitors. [FR] La présente demande concerne des 4-phénylpipéridines substituées de formule générale ainsi que leurs sels, de préférence leurs sels de qualité pharmaceutique, R2, R3, W et X ayant les valeurs données dans la description de l'invention. La présente demande concerne également un procédé de synthèse desdits composés ainsi que leur emploi en tant que médicaments, en particulier en tant qu'inhibiteurs de rénine.