Asymmetric totalsynthesis of ISP-I has been achieved by utilizing highly selective E-olefin formation based on the Schlosser-modified Wittig reaction and highly diastereoselective aldol reactions employing both chiral heterocyclic derivatives, 3-acetyl-(4S)-isopropyl-1,3-thiazolidine-2-thione and ethyl [(5R)-2,5-dihydro-5-isopropyl-3,6-diethoxypyrazin]-2-yl carboxylate.
A total synthesis of the enantiomer of anhydromyriocin (anhydrothermozymocidin)
作者:Daniel R. Payette、George Just
DOI:10.1139/v81-044
日期:1981.1.15
The optical antipode of anhydromyriocin, the γ-lactone derived from the antibiotic myriocin (thermozymocidin), was synthesized from L-arabinose, establishing the absolute configuration of myriocin as 47. In contrast to its natural enantiomer, it showed but little antifungal activity.
An Efficient and Convenient Approach to the Total Synthesis of Sphingofungin
作者:Ding-Guo Liu、Bing Wang、Guo-Qiang Lin
DOI:10.1021/jo005612g
日期:2000.12.1
of the sphingofungin family, sphingofungin F exhibits interesting physiological activities with a structural unit of an alpha-substituted alanine. Described herein is an efficient and convenient stereoselective synthesis of sphingofungin F from L-(+)-tartaric acid, which utilizes Sharpless asymmetric epoxidation of allylic alcohol and Lewis acid-catalyzed intramolecular epoxide-opening reaction with