An Efficient and Convenient
Protocol for Highly Regioselective Cleavage of Terminal Epoxides
to β-Halohydrins
作者:Bu-Bing Zeng、Tao Wang、Wen-Hao Ji、Zhong-Yu Xu
DOI:10.1055/s-0029-1217182
日期:——
An efficient and facile strategy for the cleavage of terminal epoxides to β-halohydrins using active magnesium halides is described. The conversion proceeds smoothly at room temperature with high regioselectivity and good yields even when sensitive functional groups are present.
Novel 3,5,and/or 6 substituted analogues of swainsonine processes for their preparation and their use as therapeutic agents
申请人:GlycoDesign Inc.
公开号:US20030236229A1
公开(公告)日:2003-12-25
The invention relates to novel 3, 5, and/or 6 swainsoninc analogues, processes for their preparation and their use as therapeutic agents. The invention also relates to pharmaceutical compositions containing the compounds and their use as therapeutics.
Novel 3, 5, and/or 6 substituted analogues of swainsonine, processes for their preparation and their use as therapeutic agents
申请人:GlycoDesign Inc.
公开号:US20020099065A1
公开(公告)日:2002-07-25
The invention related to novel 3, 5, and/or 6 swainsonine analogues, processes for their preparation and their use as therapeutic agents. The invention also relates to pharmaceutical compositions containing the compounds and their use as therapeutics.
Differently protected glycidol derivatives (with Bn, TBDPS, TBS and MPM groups) have been tested for regioselective ring opening with vinylmagnesium bromide in order to obtain useful five-carbon functionalised homoallylic alcohols. Careful choice of the reagents and experimental conditions allowed a general access to important chiral synthons for asymmetric synthesis. (C) 2003 Elsevier Science Ltd. All rights reserved.
NOVEL 3, 5, AND/OR 6 SUBSTITUTED ANALOGUES OF SWAINSONINE, PROCESSES FOR THEIR PREPARATION AND THEIR USE AS THERAPEUTIC AGENTS