基于3,4,3',4'-四氢-2,2'-螺双(2 H -1-苯并吡喃)骨架的熔融芳族螺缩醛的轻松合成
摘要:
报道了基于母体3,4,3',4'-四氢-2,2'-螺双(2 H -1-苯并吡喃)杂环体系的一系列芳族6,6-螺缩醛的简便合成。关键步骤包括使用Sonogashira偶联剂合成芳基乙炔,该芳基乙炔与芳基醛偶联形成炔丙醇中间体。炔醇的氢化反应,然后氧化,生成了一种被掩盖的二羟基酮,该酮在用三甲基甲硅烷基溴处理后进行脱保护和环化成稠合的芳族螺缩醛。
[EN] SPIROPYRROLIDINE BETA-SECRETASE INHIBITORS FOR THE TREATMENT OF ALZHEIMER'S DISEASE<br/>[FR] INHIBITEURS DE BÊTA-SÉCRÉTASE DE TYPE SPIROPYRROLIDINE POUR LE TRAITEMENT DE LA MALADIE D'ALZHEIMER
申请人:MERCK SHARP & DOHME
公开号:WO2010094242A1
公开(公告)日:2010-08-26
The present invention is directed to spiropyrrolidine compounds of formula (I) which are inhibitors of the beta-secretase enzyme and that are useful in the treatment of diseases in which the beta-secretase enzyme is involved, such as Alzheimer's disease. The invention is also directed to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the treatment of such diseases in which the beta-secretase enzyme is involved.
Synthesis of aromatic spiroacetals related to γ-rubromycin based on a 3H-spiro[1-benzofuran-2,2′-chromane] skeleton
作者:Kit Yee Tsang、Margaret A. Brimble
DOI:10.1016/j.tet.2007.02.033
日期:2007.6
The synthesis of a series of aromatic 5,6-benzannelated and naphthyl-benzannelated spiroacetalsrelated to the spiroacetalunit present in the quinonoid antibiotic γ-rubromycin is reported. The key steps include the use of Sonogashira coupling to construct an aryl acetylene that is coupled to an aryl aldehyde forming a propargyl alcohol intermediate. Hydrogenation of the resultant alkynol followed
Towards γ-Rubromycin: Model Studies, Development of a C<sub>3</sub>Building Block, and Synthesis of 4′-Silyl-γ-rubromycin
作者:Michael Wilsdorf、Hans-Ulrich Reissig
DOI:10.1002/ejoc.201601224
日期:2016.12
system. Herein, we report our strategy towards this class of natural products, that led to the identification of an electronically well-balanced spiroketalization precursor and eventually culminated in the preparation of an unnatural 4′-silyl-substituted γ-rubromycin derivative in racemic form. In the course of this study, we additionally introduced a new type of γ-silylated allylic phosphonate reagents
SPIROPYRROLIDINE BETA-SECRETASE INHIBITORS FOR THE TREATMENT OF ALZHEIMER'S DISEASE
申请人:Liu Kun
公开号:US20110306595A1
公开(公告)日:2011-12-15
The present invention is directed to spiropyrrolidine compounds of formula (I) which are inhibitors of the beta-secretase enzyme and that are useful in the treatment of diseases in which the beta-secretase enzyme is involved, such as Alzheimer's disease. The invention is also directed to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the treatment of such diseases in which the beta-secretase enzyme is involved.