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Studies on the Constituents of the Stems ofTinospora tuberculata, IV. Isolation and Structure Elucidation of the Five New Furanoid Diterpene Glycosides Borapetoside C–G

✍ Scribed by Fukuda, Naomichi ;Yonemitsu, Michiko ;Kimura, Takeatsu

Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
483 KB
Volume
1993
Category
Article
ISSN
0947-3440

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✦ Synopsis

Abstract

Five new furanoid diterpene glycosides, named borapetoside C (1), D (2), E (3), F (4), and G (5), were isolated from the stems of Tinospora tuberculata Beumée (Menispermaceae). The structures of 1–5 were elucidated by chemical and spectroscopic methods.

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## Abstract Two new dinorditerpene glucosides, tinosineside A (1) and B (2‐O‐acetyltinosineside A, 2), were isolated from the fresh stems of __Tinospora sinensis__ Merr. (Menispermaceae). Their structures were established on the basis of chemical and spectroscopic findings.