NEW ARBORANE TYPE TRITERPENOIDS FROM RUBIA CORDIFOLIA VAR. PRATENSIS AND R. ONCOTRICHA

Hideji ITOKAWA; Ya-Fang QIAO; Koichi TAKEYA

doi:10.1248/cpb.38.1435

Hideji ITOKAWA, Ya-Fang QIAO, Koichi TAKEYA

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Keywords: rubiarobnol, Rubia cordifolia var. pratensis, Rubia oncotricha, Rubiaeae, arborane, triterpenoid, ^1H-¹³C COSY, COLOC

JOURNAL FREE ACCESS

1990 Volume 38 Issue 5 Pages 1435-1437

DOI https://doi.org/10.1248/cpb.38.1435

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Abstract

The structures of six new arborane type triterpenoids, rubiarbonols A, B, C, D, E, and F, from Rubia plants were determined as 3β, 7β, 19α, 28-tetrahydroxyarbor-9(11)-ene, 3β, 7β, 19α-trihydroxyarbor-9(11)-ene, 2α-acetoxy-3β, 7β, 19α-trihydroxyarbor-9(11)-ene, 3β-acetoxy-2α, 7β, 19α-trihydroxyarbor-9(11)-ene, 2α, 3β, 7β, 19α-tetrahydroxyarbor-9(11)-ene, and 2α, 3β, 7β, 19α, 28-pentahydroxyarbor-9(11)-ene respectively by various spectroscopic methods.

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