1967 年 87 巻 12 号 p. 1489-1492
Acerinol (I), m.p. 152∼153°, [α]24D+25.65°, C30H46O5, is a triterpene alcohol obtained on acid treatment of the glycosidic fraction of Cimicifuga acerina. I forms a monoacetate (II) of m.p. 270∼272°, [α]24D+33.84°, C32H48O6, a diacetate (III) of m.p. 214∼216°, C34H50O7, a monoketo compound (IV) of m.p. 185∼187°, C30H44O5, and a dehydrated compound (V) of m.p. 170∼172°, C30H44O4. Catalytic reduction of V affords a dihydro compound (VI) of m.p. 169∼171°, C30H45O4, I also forms a monoepoxy compound (VII) of m.p. 148∼150°, C30H46O6, whose acid treatment produces a diene compound (VIII) of m.p. 138∼140°, C30H44O5. From these reactivities and from other observations, it was concluded that I should be a kind of lanostane series compound represented by formula I.