2'-去甲氧基-2'-甲基去氢灰黄霉素 在
cell-free system of Streptomyces cinereocrocatus 作用下,
以82%的产率得到(+)-2'-demethoxy-2'-methylgriseofulvin
参考文献:
名称:
Regio- and stereoselective hydrogenation of 2'-demethoxy-2'-methyldehydrogriseofulvin, a symmetrical substrate, to (+)-2'-demethoxy-2'-methylgriseofulvin with a cell-free system of Streptomyces cinereocrocatus.
Regio- and stereoselective hydrogenation of 2'-demethoxy-2'-methyldehydrogriseofulvin, a symmetrical substrate, to (+)-2'-demethoxy-2'-methylgriseofulvin with a cell-free system of Streptomyces cinereocrocatus.
ODA, TAIKO;HASHIMOTO, HUMIE;SATO, YOSHIHIRO, CHEM. AND PHARM. BULL., 38,(1990) N, C. 525-528
作者:ODA, TAIKO、HASHIMOTO, HUMIE、SATO, YOSHIHIRO
DOI:——
日期:——
Regio- and stereoselective hydrogenation of 2'-demethoxy-2'-methyldehydrogriseofulvin, a symmetrical substrate, to (+)-2'-demethoxy-2'-methylgriseofulvin with a cell-free system of Streptomyces cinereocrocatus.
作者:Taio ODA、Humie HASHIMOTO、Yoshihiro SATO
DOI:10.1248/cpb.38.525
日期:——
Enzymatic hydrogenation of 2'-demethoxy-2'-methyldehydrogriseofulvin (5) with a cell-free system of Streptomycs cinereocrocatus afforded (+)-2'-demethoxy-2'-methylgriseofulvin (6). The structure of 6 was determined on the basis of comparisons of the proton nuclear magnetic resonance spectrum, mass spectrum, and circular dichroism with those of a standard specimen which was synthesized chemically. The results demonstrated that when the 2'-position of (-)-dehydrogriseofulvin was substituted with a methyl group, its hydrogenation with the cell-free system occurred stereoselectively at the 5', 6'-position.