Phytochemistry p. 1095 - 1100 (1987)
Update date:2022-07-31
Topics:
Hasegawa, Shinichi
Kaneko, Nobutada
Hirose, Yoshiyuki
Four new triterpenes having a lanostane-type skeleton, firmanoic acid <(24E)-3,23-dioxo-9β-lanosta-7,24-dien-26-oic acid>, isofirmanoic acid <3,23-dioxo-9β-lanosta-7,25(27)-dien-26-oic acid>, firmanolide <(17S,23S)-17,23-epoxy-3-oxo-9β-lanosta-7,24-dien-26,23-olide> and 23-epi-firmanolide <(17S,23R)-17,23-epoxy-3-oxo-9β-lanosta-7,24-dien-26,23-olide>, were isolated from the seed of Abies firma.Their structures were established by spectral and chemical methods.In addition, the structures assigned for three previously reported diterpenes in this seed are revised here. - Key Word Index: Abies firma; Pinaceae; seed; triterpenes; lanostane.
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