NOVEL BELACTOSIN DERIVATIVES AS THERAPEUTIC AGENTS/BIOLOGICAL PROBES AND THEIR SYNTHESIS
申请人:Romo Daniel
公开号:US20090042922A1
公开(公告)日:2009-02-12
Derivatives of belactosin and their synthesis are disclosed. In certain embodiments, compounds of the present invention exhibit anti-cancer, antiviral, antibiotic, and/or auto-immune therapeutic abilities. In general, methods of synthesis disclosed herein allow for introduction of a variety of substituents at numerous positions as well as the facile introduction of a beta-lactone ring moiety. The synthetic steps comprise, in preferred embodiments, a tandem Mukaiyama aldol lactonization reaction. Data demonstrating the utility of some of the derivatives as proteasome inhibitors is also disclosed.
US8119653B2
申请人:——
公开号:US8119653B2
公开(公告)日:2012-02-21
Total Synthesis of (−)-Belactosin C and Derivatives via Double Diastereoselective Tandem Mukaiyama Aldol Lactonizations
作者:Sung Wook Cho、Daniel Romo
DOI:10.1021/ol070275k
日期:2007.4.1
[reaction: see text] The enantioselective synthesis of (-)-belactosin C and derivatives was accomplished in a concise manner employing the tandem, Mukaiyama aldol-lactonizaton (TMAL) process. One approach involved a distal double diastereoselective TMAL reaction with a dipeptide glyoxamide, whereas a second approach involved amide coupling of a dipeptide with a beta-lactone carboxylic acid, obtained