The Structure of Serratenediol.
作者:Yasuo Inubushi、Yoshisuke Tsuda、Takehiro Sano、Takeshi Konita、Sachiko Suzuki、Hiroyuki Ageta、Yoshiyuki Otake
DOI:10.1248/cpb.15.1153
日期:——
Retropinacol rearrangement of serratenediol established that either terminal ring of this triterpenoid has the partial structure (A). The accumulated chemical and spectroscopic evidences have been summarized in the structure and stereochemistry (1__=) containing sevenmembered ring for serratenediol, which was confirmed by further degradation into a tricyclic ketone (4__=7__=). The synthesis of this key product has now been achieved. The manner of acid isomerization of serratene derivatives has been also clarified. Serratenediol monoacetate, a minor triterpenoid constituent of Lycopodium serratum, was also established as (3__=), based on ORD examination of various ketonic derivatives.
对锯齿二醇的Retropinacol重排证实,这种三萜类化合物两个末端环都具有部分结构(A)。 化学和光谱学证据的积累已总结为锯齿二醇的七元环结构和立体化学(1__=),这已通过进一步降解为三环酮(4__=7__=)得到证实。 这种关键产品的合成现在已经实现。 锯齿衍生物的酸异构化方式也已得到澄清。 根据ORD对各种酮类衍生物的检测,锯齿二醇单乙酸酯(一种锯齿石松的三萜类小成分)也被确定为(3__=)。