Terpenoids. LIV. : The Structures of Rabdoinflexins A and B, New Diterpenoids from Rabdosia inflexa (THUNB.) HARA

Zhao-Quan WANG; Manabu NODE; Feng-Ming XU; Hui-Ping HU; Kaoru FUJI

doi:10.1248/cpb.37.2683

Zhao-Quan WANG, Manabu NODE, Feng-Ming XU, Hui-Ping HU, Kaoru FUJI

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Keywords: Rabdosia inflexa, diterpenoid, rabdoinflexin A, rabdoinflexin B, rabdoserrin A, kaurene type, structure

JOURNAL FREE ACCESS

1989 Volume 37 Issue 10 Pages 2683-2686

DOI https://doi.org/10.1248/cpb.37.2683

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Abstract

Two new kaurene-type diterpenoids, rabdoinflexins A (1) and B (2), were isolated from the leaves of Rabdosia inflexa. Their structures including absolute configuration were elucidated on the basis of spectral data and chemical evidence. A chemical conversion into rabdoserrin A (5) from rabdoinflexin A (1) established the absolute configuration of rabdoserrin A.

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