Total synthesis of optically active monocrotaline, a carcinogenic pyrrolizidine alkaloid possessing an eleven-membered retronecine dilactone
作者:Haruki Niwa、Takeshi Ogawa、Osamu Okamoto、Kiyoyuki Yamada
DOI:10.1016/s0040-4020(01)88350-2
日期:1992.11
A total synthesis of the natural enantiomer of monocrotaline (1), a representative of carcinogenic pyrrolizidine alkaloids having an 11-membered retronecine dilactone was achieved through regioselective coupling of (+)-retronecine (3) and the optically active protected necic acid 8, the latter being prepared enantioselectively from the meso-diester 11.
野百合碱的自然对映体(的总合成1 retronecine( - ),具有11元retronecine双内酯致癌吡咯里生物碱的代表通过(+)的区域选择性耦合实现3)和光学活性的保护necic酸8,后者是由中二酯11对映选择性地制备的。