Optically active pentacycles ( 13–18 ) were synthesized from L- and D-tryptophans, two of which ( 13 and 15 ) were alkylated and dehydrogenated to 21 and 22, respectively.
由L和D色氨酸合成了旋光性五环(13-18),其中两个(13和15)被烷基化并脱氢成21和22。
Reversal of multidrug resistance in human colon carcinoma cells
申请人:American Cyanamid Comany
公开号:US20020169111A1
公开(公告)日:2002-11-14
The present invention describes the use of fumitremorgin A, B and C and a series of diketopiperazines of Formula (I) to resensitize multidrug resistant (MDR) cancer cells to the cytotoxic effects of chemotherapeutic drugs.