Syntheses and Antifungal Activity of dl-Griseofulvin and Its Congeners. II.
作者:Yasuo TAKEUCHI、Hideo TOMOZANE、Keiji MISUMI、Kuniko YATA、Teruyuki KAWATA、Yoshiko NIINO、Masatoshi YAMATO、Takashi HARAYAMA
DOI:10.1248/cpb.45.327
日期:——
Griseofulvin derivatives, dl-6'-demethyl-6'-ethylgriseofulvin (dl-5) and dl-6'-demethyl-6'-phenylgriseofulvin (dl-6) were prepared by application of a synthetic method developed by us. Antifungal activity of these derivatives decreased in the order of dl-griseofulvin (dl-1)>dl-5»dl-6 (inactive). The reaction of these derivatives with ethanethiol gave two types of compounds, 2'-(ethylthio)griseofulvin (15) and 4'-(ethylthio)isogriseofulvin (16). The relationship between the ratios of isolated yield of 15 and 16 and antifungal the activity of griseofulvin derivatives is discussed.
我们采用我们开发的一种合成方法,制备了灰黄霉素衍生物,dl-6'-去甲基-6'-乙基灰黄霉素(dl-5)和dl-6'-去甲基-6'-苯基灰黄霉素(dl-6)。这些衍生物的抗真菌活性顺序为dl-灰黄霉素(dl-1)>dl-5»dl-6(无活性)。这些衍生物与乙硫醇反应得到了两种类型的化合物,2'-(乙硫基)灰黄霉素(15)和4'-(乙硫基)异灰黄霉素(16)。讨论了分离产率比值15和16与灰黄霉素衍生物抗真菌活性之间的关系。