作者:Jennifer A. Lafontaine、David P. Provencal、Cristina Gardelli、James W. Leahy
DOI:10.1021/jo034011x
日期:2003.5.1
The convergent, highly enantioselective synthesis of rhizoxin D, a natural product possessing potent antitumor and antifungal bioactivity, is described. The C(1)-C(9) fragment of the molecule was synthesized utilizing a threefold pseudosymmetric intermediate ultimately derived from gamma-butyrolactone. The central core of rhizoxin D was prepared via a chiral resolution/asymmetric aldol protocol. Several
描述了具有强大的抗肿瘤和抗真菌生物活性的天然产物-根瘤菌素D的聚合,高对映选择性合成。该分子的C(1)-C(9)片段是使用三倍拟对称中间体合成的,该中间体最终衍生自γ-丁内酯。通过手性拆分/不对称羟醛方案制备了根霉菌素D的中心核心。探索了产生多烯片段的几种方法,并最终从丝氨酸中分六个步骤制备了侧链。分子的左翼和右翼的统一是使用一步式烯烃化方案实现的,大环化是使用Horner-Emmons烯烃在C(2)-C(3)烯烃上进行的。