Natural acetylenes. Part XX. Tetra-acetylenic and other metabolites from Fistulina hepatica(Huds) Fr.
作者:Ewart R. H. Jones、G. Lowe、P. V. R. Shannon
DOI:10.1039/j39660000139
日期:——
structure determination of five polyacetylenes from Fistulina hepatica are described. They include two C13-tetra-acetylenic compounds which, in addition to adding a new chromophore to those of the fungal metabolites, also represent the first hydrocarbon (I) and the first tetra-ol (V) to be encountered. The structure and stereochemistry of the tetra-ol (V) followed from two experiments; firstly, periodate oxidation
描述了五种来自肝瘘的聚乙炔的分离,表征和结构测定。它们包括两种C 13-四炔属化合物,它们除了向真菌代谢物的生色团添加新的发色团外,还代表将要遇到的第一个烃(I)和第一个四醇(V)。四醇(V)的结构和立体化学来自两个实验。首先,高碘酸盐氧化得到十,2、4、6、8-四炔基,其次,碱催化环化成三炔-烯醇醚(VII),然后进行臭氧分解,得到(-)-己二酸内酯(VIII)。C 13-三亚炔醇(II)也是一种新的代谢产物。其余两种代谢物的特征是顺式-和反式-脱氢间苯二酚(III和IV),前者是一种新的天然产物,而后者则是分布最广的真菌聚乙炔。