Polyoxypregnane glycosides from the flowers of Dregea volubilis |
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| Authors: | Sahu Niranjan Panda Nilendu Mandal Nirup Banerjee Sukdeb Koike Kazuo Nikaido Tamotsu |
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| Institution: | Indian Institute of Chemical Biology, 4 Raja SC Mullick Road, Jadavpur, -700032, Kolkata, India. npsahu@iicb.res.in |
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| Abstract: | Three novel polyoxypregnane glycosides, volubiloside A, B and C (1-3), were isolated from the flowers of Dregea volubilis Linn., and their structures were elucidated as drevogenin D-3-O-beta-D-glucopyranosyl (1-->4)-6-deoxy-3-O-methyl-beta-D-allopyranosyl (1-->4)-beta-D-cymaropyranosyl (1-->4)-beta-D-cymaropyranoside, drevogenin D-3-O-beta-D-glucopyranosyl (1-->4)-6-deoxy-3-O-methyl-beta-D-allopyranosyl (1-->4)-beta-D-cymaropyranosyl (1-->4)-beta-D-digitoxopyranoside and drevogenin P-3-O-beta-D-glucopyranosyl (1-->4)-6-deoxy-3-O-methyl-beta-D-allopyranosyl (1-->4)-beta-D-cymaropyranosyl (1-->4)-beta-D-cymaropyranoside, respectively, on the basis of extensive NMR experiments, MALDI-TOF MS, and some chemical strategies. |
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| Keywords: | Dregea volubilis Wattakaka volubilis Marsdenia volubilis Asclepiadaceae Polyhydroxypregnane glycoside Volubiloside A B and C Drevogenin D Drevogenin P Conduritol A Quercetin Quercetin-3-O-rutinoside 2D NMR |
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