Tannins and Related Compounds. LII. Studies on the Constituents of the Leaves of Thujopsis dolabrata SIEB. et ZUCC

GEN-ICHIRO NONAKA; YUKO GOTO; JUN-EI KINJO; TOSHIHIRO NOHARA; ITSUO NISHIOKA

doi:10.1248/cpb.35.1105

Tannins and Related Compounds. LII. Studies on the Constituents of the Leaves of Thujopsis dolabrata SIEB. et ZUCC

GEN-ICHIRO NONAKA, YUKO GOTO, JUN-EI KINJO, TOSHIHIRO NOHARA, ITSUO NISHIOKA

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Keywords: Thujopsis dolabrata, Cupressaceae, flavanonol glycoside, taxifolin xyloside, oligomeric procyanidin

JOURNAL FREE ACCESS

1987 Volume 35 Issue 3 Pages 1105-1108

DOI https://doi.org/10.1248/cpb.35.1105

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Abstract

From the leaves of Thujopsis dolabrata SIEB. et Zucc. (Cupressaceae), four new flavanonol glycosides, the 3-O-β-D-xylopyranosides (1→4) of (+) -taxifolin, (-) -taxifolin, (+) -epitaxifolin and (-) -epitaxifolin, together with (+) -catechin (5), (-) -epicatechin (6) and thirteen oligomeric procyanidins (7-19), were isolated and their chemical structures were characterized by spectroscopic and chemical investigations.

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