Abstract A collection of yew needles afforded a taxane diester characterized by an additional bond between C-3 and C-11. The structure was elucidated by spectral methods, and further confirmed by synthesis from a known taxane derivative. A general procedure for the photocyclization of taxicins is reported.
摘要 一组红豆杉针叶提供了一种
紫杉烷二酯,其特征在于 C-3 和 C-11 之间的附加键。该结构通过光谱方法阐明,并通过由已知
紫杉烷衍
生物的合成进一步证实。报告了
紫杉素光环化的一般程序。