Studies on the Constituents of Cucurbitaceae Plants. X. On the Saponin Constituents of Gynostemma pentaphyllum MAKINO (6)
Open Access
- 1 January 1984
- journal article
- research article
- Published by Pharmaceutical Society of Japan in YAKUGAKU ZASSHI
- Vol. 104 (9) , 939-945
- https://doi.org/10.1248/yakushi1947.104.9_939
Abstract
Four dammarane-oligoglycosides named gypenosides XXXVI (1), XXXVII (2), LIII (3) and LIV (4) were isolated from the aerial pars of Gynostemma pentaphyllum collected in Hyogo pref. [prefecture, Japan]. On the basis of chemical and physicochemical evidence, they were characterized as follows: 1, 19-oxo-3.beta.,20(S)-dihydroxydammar-24-ene-3-O-[.beta.-D-glucopyranosyl-(1 .fwdarw. 2)-.alpha.-L-arabinopyranoside]-20-O-.beta.-rutinoside; 2, 19-oxo-3.beta.,20(S)-dihydroxydammar-24-ene-3-O-[.beta.-D-glucopyranosyl-(1 .fwdarw. 2)-.alpha.-L-arabinopyranoside]-20-O-.beta.-primeveroside; 3, 19-oxo-3.beta.,12.beta.,20(R)-trihydroxydammar-24-ene-3-O-[.beta.-D-glucopyranosyl-(1 .fwdarw. 2)-.alpha.-L-arabinopyranoside]; and 4, 3.beta.,12.beta.,19,20(S)-tetrahydroxydammar-24-ene-3-O-[.beta.-D-glucopyranosyl-(1 .fwdarw. 2)-.alpha.-arabinopyranoside].Keywords
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