Studies on the Constituents of Orchidaceous Plants. II. Isolation, Structures, and Stereochemistry of Cyclonervilol, Cyclohomonervilol, and Dihydrocycloeucalenol C-24 Epimers, New Triterpenes from Nervilia purpurea SCHLECHTER

TOHRU KIKUCHI; SHIGETOSHI KADOTA; HISASHI SUEHARA; TAKEHIKO SHIMA

doi:10.1248/cpb.33.1914

菊池徹, 門田重利, 末原久, 島岳彦

著者情報

キーワード: ^<13>C-NMR

ジャーナルフリー

1985 年 33 巻 5 号 p. 1914-1929

DOI https://doi.org/10.1248/cpb.33.1914

詳細

抄録

Five new triterpenes, 24 (R/α)-and 24 (S/β)-dihydrocycloeucalenol, dihydrocyclonervilol, cyclonervilol, and cyclohomonervilol, were isolated along with cycloeucalenol and cyclofuntumienol from the triterpene fraction of Nervilia purpurea by the combination of chromatography on silver nitrate-impregnated silica gel and reversed-phase high-performance liquid chromatography (HPLC). The structures 4a, 5a, 7a, 2a, and 10a are proposed for these compounds, respectively.

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