ステロイドの研究 第28報
ヒトデの含むPatiriasterol
1949 年 69 巻 5 号 p. 212-215
詳細
1949 年 69 巻 5 号 p. 212-215
A crude, free sterol was extracted, by an ordinary method, from a dried powder of Patiria pectinifera Müller and Troscher, a kind of starfish collected in the Hokkaido, Japan. Purification by fractional recrystallization and formation of m-dinitrobenzoate, a specific sterol, m.p. 144-6°, [α]D12=+4.4°, was isolated and designated as “patiriasterol”. This substance easily gives digitonide and absorbs 1mol. H2 by catalytic reduction. By the application of the relationship between steroid structure and the optical rotation developed by Bernstein et al. (J. Org. Chem. 6, 319 [1941]), the following structure, yet unknown in literature, is forwarded.
