1982 年 35 巻 12 号 p. 1627-1631
Five metabolites of actinomycete X-14881 were isolated from the fermentation broth and characterized. The major component was identified as [3R-(3α, 6aβ, 7β, 12α, 12aα)] or [3S-(3β, 6aα, 7α, 12β, 12aβ)]-6a, 7, 12-trihydroxy-3, 4, 6a, 7, 12, 12a-hexahydro-8-methoxy-3-methylbenz[a]- anthracen-1(2H)-one; the other four are closely related derivatives thereof.