Trifluoromethyl ketone analogs as selective cPLA2 inhibitors
申请人:Bristol-Myers Squibb Company
公开号:US06350892B1
公开(公告)日:2002-02-26
Selective inhibitors of the cPLA2 enzymes are provided which are of use in controlling a wide variety of inflammatory diseases. The inhibitors of the present invention have the general formula
where (R′), p, D, Y, Z, Ra, Rb and A are as defined in the specification.
We describe a rapid and efficient method for selective deprotection of methoxymethyl (MOM) ethers using ZnBt(2) and n-PrSH, which completely removed MOM from diverse MOM ethers of primary, secondary. and tertiary alcohols or phenol derivatives The deprotection takes less than ten minutes with both high yield and selectivity in the presence of other protecting groups In addition, the rapid deprotection of MOM ethers of tertiary hydroxyls in high yield with no epimerization allows MOM to be a suitable protecting group for tertiary alcohols (C) 2010 Elsevier Ltd All rights reserved
LiOAc-Catalyzed Chemoselective Deprotection of Aryl Silyl Ethers under Mild Conditions
作者:Bing Wang、Hui-Xia Sun、Zhi-Hua Sun
DOI:10.1021/jo802472s
日期:2009.2.20
An efficient and chemoselective deprotection protocol for aryl silyl ethers using LiOAc as a bifunctional Lewis acid-Lewis base catalyst was described. Acetates, epoxides, and aliphatic silyl ethers were preserved, whereas aryl TBS and TBDPS ethers can be differentiated.
Alpha-amino,-thio,-oxo substituted ketones as phospholipase inhibitors
申请人:——
公开号:US20020037875A1
公开(公告)日:2002-03-28
Inhibitors of the cytosolic phospholypase A2 enzymes are provided which are of use in controlling a wide variety of inflammatory diseases. The inhibitors of the present invention have the general formula
1
wherein X, Z, X
1
, R
1
, R
2
, R
a
, R
b
, R
3
, R
4
and Y are as defined in the specification.