Studies on rhubarb (Rhei rhizoma). IV. Naphthalene glycosides.
- 1 January 1977
- journal article
- Published by Pharmaceutical Society of Japan in CHEMICAL & PHARMACEUTICAL BULLETIN
- Vol. 25 (10) , 2708-2712
- https://doi.org/10.1248/cpb.25.2708
Abstract
From the Japanese rhubarb, "Shinshu Daio, " two new naphthalene glycosides, I, mp 150-152°, [α] D-119.0°, C20H24O9·H2O and II, [α] D-102.0°, C22H24O12·3 1/2H2O were isolated together with 6-hydroxymusizin 8-O-β-D-glucopyranoside which was found to be identical with the one isolated from aphid, Aphis nerii. By the chemical and spectral evidences, the structures of I and II were characterized to be torachrysone 8-O-β-D-glucopyranoside and torachrysone 8-O-β-D-(6'-O-oxalyl)-glucopyranoside, respectively.Keywords
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