Synthesis of a highly functionalized tricyclic ring system related to guanacastepene via a tandem ring-closing metathesis reaction
作者:François-Didier Boyer、Issam Hanna
DOI:10.1016/s0040-4039(02)01793-8
日期:2002.10
A new approach to a highlyfunctionalized 5,7,6-tricyclic corestructure of guanacastepene has been developed using the tandem ring-closingmetathesis reaction of dienynes as the key step.
Formation of Contiguous Quaternary and Tertiary Stereocenters by Sequential Asymmetric Conjugate Addition of Grignard Reagents to 2-Substituted Enones and Mg-Enolate Trapping
作者:Nicolas Germain、Alexandre Alexakis
DOI:10.1002/chem.201500292
日期:2015.6.1
tolerated for the ACA to 2‐methylcyclohexenone. The sequential ACA–enolate trapping, which leads to quaternarystereocenters, was then studied. Thus, many electrophiles have been tested, thereby giving rise to highly functionalized cyclic ketones with contiguous α‐quaternary and β‐tertiary centers. The present technique is believed to bring a new approach to versatile terpenoid‐like skeletons of bioactive
Abstract Efficient access to thermodynamically favoured silyl enol ethers deriving from α,α′-dienolizable ketones was produced via easy-made NEt3HCl-mediated isomerization of a regioisomeric mixture of O-silylated products. † deceased on 7 may 1997 § Present adress: Laboratoire de Synthese Organique, associe au CNRS, Universite du Maine, Avenue Olivier Messiaen, B.P. 9 F-72085 Le Mans (France)
摘要 通过易于制备的 NEt3HCl 介导的 O-硅烷化产物的区域异构混合物的异构化,可以有效地获得源自 α,α'-可二烯醇化酮的热力学有利的甲硅烷基烯醇醚。† 1997 年 5 月 7 日逝世 § 现地址:Laboratoire de Synthese Organique, associe au CNRS, Universite du Maine, Avenue Olivier Messiaen, BP 9 F-72085 Le Mans (France)
COMPOUND
申请人:VICKER Nigel
公开号:US20090186900A1
公开(公告)日:2009-07-23
There is provided a compound of Formula I
wherein the various symbols are as defined in the description, and a method of manufacturing a medicament for use in the therapy of a condition or disease associated with 17β-hydroxysteroid dehydrogenase (17β-HSD), comprising a compound of Formula I.