Chemical and Pharmaceutical Bulletin
Online ISSN : 1347-5223
Print ISSN : 0009-2363
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Medicinal Foodstuffs. XXII.1) Structures of Oleanane-Type Triterpene Oligoglycosides, Pisumsaponins I and II, and Kaurane-Type Diterpene Oligoglycosides, Pisumosides A and B, from Green Peas, the Immature Seeds of Pisum sativum L.
Toshiyuki MURAKAMIKentarou KOHNOHisashi MATSUDAMasayuki YOSHIKAWA
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2001 Volume 49 Issue 1 Pages 73-77

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Abstract

Two new oleanane-type triterpene oligoglycosides, pisumsaponins I and II, and two new kaurane-type diterpene oligoglycosides, pisumosides A and B, were isolated from the immature seeds (green peas) of Pisum sativum L. together with soyasaponin I, bersimoside I, dehydrosoyasaponin I, and their 6'-methyl esters. The structures of pisumsaponins and pisumosides were determined on the basis of chemical and physicochemical evidence as 22-O-malonylsoyasapogenol B 3-O-α-L-rhamnopyranosyl(1→2)-β-D-galactopyranosyl(1→2)-β-D-glucopyranosiduronic acid (22-O-malonylsoyasaponin I), sandosapogenol 3-O-α-L-rhamnopyranosyl(1→2)-β-D-galactopyranosyl(1→2)-β-D-glucopyranosiduronic acid, 17-O-β-D-glucopyranosyl-6β, 7β, 13β, 17-tetrahydroxy-19-kauranoic acid 19-O-β-D-glucopyranosyl(1→2)-β-D-glucopyranoside, and 6β, 7β, 13β, 17-tetrahydroxy-19-kauranoic acid 19-O-β-D-glucopyranosyl(1→2)-β-D-glucopyranoside, respectively.

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© 2001 The Pharmaceutical Society of Japan
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