A Convergent Synthesis of (+)-Cryptophycin B, a Potent Antitumor Macrolide from <i>Nostoc</i> sp. Cyanobacteria
作者:Arun K. Ghosh、Alexander Bischoff
DOI:10.1021/ol000058i
日期:2000.6.1
text] An efficient and highly stereoselective synthesis of cryptophycin B (2), a potent cytotoxic agent, is described. The ester-derived titanium-enolate-mediated syn-aldol reaction was employed to generate the stereocenters C(5) and C(6). The route is convergent and provides a convenient access to the synthesis of structural variants of cryptophycin B as well as members of its family.
[结构-见正文]描述了一种有效的高度立体选择性的隐藻霉素B(2)(一种有效的细胞毒剂)合成方法。酯衍生的钛烯醇盐介导的顺式羟醛反应被用于生成立体中心C(5)和C(6)。该途径是会聚的,为合成隐藻霉素B及其家族成员的结构变体提供了便利。