Novel glucocorticoid antedrugs possessing a 21-(γ-lactone) ring
作者:Richard M. Angell、Keith Biggadike、Rosanne M. Farrell、Stephen S. Flack、Ashley P. Hancock、Wendy R. Irving、Sean M. Lynn、Panayiotis A. Procopiou
DOI:10.1039/b200190j
日期:2002.3.8
A series of novel pregnane derivatives bearing γ-butyrolactones at C21 were prepared and tested as glucocorticoid agonists. The compounds were also tested for their lability in human plasma, and found to be rapidly hydrolysed by the enzyme paraoxonase to the respective hydroxyacids.
PROCESSES FOR PRODUCTION OF OPTICALLY ACTIVE PPAR-ACTIVATING COMPOUNDS AND INTERMEDIATES FOR PRODUCTION THEREOF
申请人:Kowa Co., Ltd.
公开号:EP1887005B1
公开(公告)日:2010-04-21
Total Synthesis of (+)-Brasilenyne. Application of an Intramolecular Silicon-Assisted Cross-Coupling Reaction
作者:Scott E. Denmark、Shyh-Ming Yang
DOI:10.1021/ja0466863
日期:2004.10.1
3-cis,cis diene unit was accomplished with a tandem ring-closing metathesis/silicon-assisted intramolecular cross-coupling reaction. In addition, a key propargylic stereogenic center was created through a novel, highly diastereoselective ring opening of a 1,3-dioxolanone promoted by TiCl(4). This reaction proceeded through an oxocarbenium ion intermediate and the asymmetric induction was fully controlled