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  • Title: Saponins from Amaranthus hypochondriacus.
    Author: Kohda H, Tanaka S, Yamaoka Y, Ohhara Y.
    Journal: Chem Pharm Bull (Tokyo); 1991 Oct; 39(10):2609-12. PubMed ID: 1806279.
    Abstract:
    Four triterpenoid saponins were isolated from Amaranthus hypochondriacus which are grain crops in the Nepal, Mexico and South America. Their structures were elucidated based on spectral evidence to be: (1) 3-O-alpha-L-rhamnopyranosyl(1----3)-beta-D-glucuronopyranosyl-2 beta,3 beta-dihydroxyolean-12-en-28-oic acid 28-O-beta-D-glucopyranosyl ester. (2) 3-O-alpha-L-rhamnopyranosyl(1----3)-beta-D-glucuronopyranosyl-2 beta,3 beta- dihydroxyolean-12-en-23-al-28-oic acid 28-O-beta-D-glucopyranosyl ester; (3) 3-O-alpha-L-rhamnopyranosyl(1----3)-beta-D-glucuronopyranosyl-2 beta, 3 beta-dihydroxy-30-norolean-12,20(29)-dien-28-oic acid 28-O-beta-D-glucopyranosyl ester. (4) 3-O-alpha-L-rhamnopyranosyl (1----3)-beta-D-glucuronopyranosyl-2 beta, 3 beta-dihydroxy-30-norolean-12, 20(29)-dien-23-al-28-oic acid 28-O-beta-D-glucopyranosyl ester.
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