Intramolecular Additions of Alcohols and Carboxylic Acids to Inert Olefins Catalyzed by Silver(I) Triflate
作者:Cai-Guang Yang、Nicholas W. Reich、Zhangjie Shi、Chuan He
DOI:10.1021/ol051065f
日期:2005.10.1
[reactions: see text] Intramolecular additions of hydroxyl or carboxyl groups to inert olefins catalyzed by simple silver(I) triflate are described. Good to excellent yields can be obtained for a range of substrates under relatively mild conditions. This reaction represents one of the simplest methods to construct cyclic ethers or lactones.
GEMCABENE, PHARMACEUTICALLY ACCEPTABLE SALTS THEREOF, COMPOSITIONS THEREOF AND METHODS OF USE THEREFOR
申请人:GEMPHIRE THERAPEUTICS INC.
公开号:US20180297929A1
公开(公告)日:2018-10-18
This present invention provides gemcabene pharmaceutically acceptable salts having a PSD90 of 35 μm to about 90 μm, methods for purifying crude gemcabene, pharmaceutically acceptable salts of purified gemcabene, pharmaceutical compositions of a gemcabene pharmaceutically acceptable salt and therapeutic and prophylactic methods useful for various conditions, including dyslipidemia.
Synthesis of Secondary Unsaturated Lactams via an Aza-Heck Reaction
作者:Scott A. Shuler、Guoyin Yin、Sarah B. Krause、Caroline M. Vesper、Donald A. Watson
DOI:10.1021/jacs.6b08932
日期:2016.10.26
The preparation of unsaturated secondary lactams via the palladium-catalyzed cyclization of O-phenyl hydroxamates onto a pendent alkene is reported. This method provides rapid access to a broad range of lactams that are widely useful building blocks in alkaloid synthesis. Mechanistic studies support an aza-Heck-type pathway.
Copper-catalysed intramolecular O–H addition to unactivated alkenes
作者:Luis A. Adrio、Louisa Shuyi Quek、Jason G. Taylor、King Kuok (Mimi) Hii
DOI:10.1016/j.tet.2009.10.055
日期:2009.12
Intramolecular cyclisation of omega-alkenoic acids and alkenols can be achieved using a catalytic amount of Cu(OTf)(2) to afford lactones and cyclic ethers, offering a practical alternative to existing catalysts. (C) 2009 Elsevier Ltd. All rights reserved.
4-AMINO DERIVATIVES OF 5-SUBSTITUTED MYCOPHENOLIC ACID