Biogenetic Syntheses of Kopsijasminilam and Deoxykopsijasminilam
作者:Martin E. Kuehne、Yun-Long Li、Chang-Qing Wei
DOI:10.1021/jo000398h
日期:2000.10.1
derived from cyclization of racemic minovincine (6), was reduced to two C-19 epimeric alcohols 8 and 9. Stereoelectronically controlled fragmentations of corresponding O-sulfonyl derivatives provided, respectively, the hexacyclic enamine 14 and, after oxidation of the olefin 16, the pentacyclic lactam 17 with a brigehead double bond. Formation of a carbamate, introduction of a second double bond at