Glycosides of 14, 15-Seco-and 13, 14 : 14, 15-Disecopregnanes from the Roots of Tylophora tanakae

Fumiko ABE; Mio HIROKAWA; Tatsuo YAMAUCHI; Keiichi HONDA; Nanao HAYASHI; Ritsuo NISHIDA

doi:10.1248/cpb.47.1384

Fumiko ABE, Mio HIROKAWA, Tatsuo YAMAUCHI, Keiichi HONDA, Nanao HAYASHI, Ritsuo NISHIDA

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Keywords: 14, 15-secopregnane glycoside, Tylophora tanakae, Asclepiadaceae, 2α-hydroxyhirundigenin, tylophoside

JOURNAL FREE ACCESS

1999 Volume 47 Issue 10 Pages 1384-1387

DOI https://doi.org/10.1248/cpb.47.1384

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Abstract

Five new glycosides of 14, 15-seco- and 13, 14 : 14, 15-diseco-type pregnanes, including a new pregnane, 2α-hydroxyhirundigenin, were isolated, in addition to one known glycoside, cynatratoside B, from the roots of Tylophora tanakae MAXIM. Their structures were elucidated by spectral and chemical means.

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