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  • Title: An echinocystic acid saponin derivative from Kalimeris shimadae.
    Author: Shao Y, Poobrasert O, Ho CT, Chin CK, Cordell GA.
    Journal: Phytochemistry; 1996 Sep; 43(1):195-200. PubMed ID: 8987514.
    Abstract:
    A new triterpene saponin, shimadoside A, has been isolated from Kalimeris shimadae and its structure deduced as 3-O-beta-D-glucopyranosiduronic acid-3 beta, 16 alpha-dihydroxyolean-12-en-28-oic acid-28-O-beta-D-xylopyranosyl-(1-->3)-beta-D-xylopyranosyl-(1--> 4)-alpha-L-rhamnopyranosyl-(1-->2)-beta-D-xylopyranoside by means of spectral data, especially NMR, including COSY, HMQC, HOHAHA and ROESY techniques, and chemical degradation.
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