Metabolic products of microorganisms. Part 262. The absolute configuration of sphydrofuran, a widespread metabolite from streptomycetes
作者:Kai U. Bindseil、Thomas Henkel、Axel Zeeck、Daniel Bur、Daniel Niederer、Urs Séquin
DOI:10.1002/hlca.19910740617
日期:1991.9.18
Sphydrofuran (1) was isolated from the culture filtrate of Streptomyces sp. (strain Gö 28 and Tü 3616) by chemical screening methods. Metabolite 1 is an anomeric and ring-chain tautomeric mixture and could easily be transformed into the stable furan derivative 2 under acidic conditions. The constitution and relative configuration of 1 was established by X-ray crystallography of its 8-O-methyl derivative
从链霉菌(Streptomyces sp。)的培养滤液中分离到了Sphydrofuran(1)。(菌株Gö28和Tü3616)通过化学筛选方法。代谢物1是一种端基异构体和环链互变异构体混合物,在酸性条件下很容易转化为稳定的呋喃衍生物2。的结构和相对构型1是由它的8- X-射线晶体学确定ö甲基衍生物3a中。C(4)的绝对构型为1,因此整个分子(3 R,4 S,5 S)的绝对构型可以从2开始确定使用Helmchen方法。