Chemical and Pharmaceutical Bulletin
Online ISSN : 1347-5223
Print ISSN : 0009-2363
ISSN-L : 0009-2363
Resin Glycosides. IV. Two New Resin Glycosides, Muricatins VII and VIII : from the Seeds of Ipomoea muricata
NAOKI NODAMASATOSHI NISHIKAZUMOTO MIYAHARATOSHIO KAWASAKI
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Keywords: muricatic acid C
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1988 Volume 36 Issue 5 Pages 1707-1713

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Abstract

Two resin glycosides, muricatins VII (1) and VIII (2) were isolated from the seeds of Ipomoea muricata (L.) JACQ. (Convolvulaceae). They were respectively characterized as 11R-jalapinolic acid 11-O-(4-O-(3R-hydroxy-2R-methylbutyryl))-β-D-fucopyranosyl-(1→4)-(2-O-(2S-methylbutyryl))-α-L-rhamnopyranosyl-(1→2)-β-D-quinovopyranosyl(qui')-(1→2)-β-D-quinovopyranosyl-1, 3(qui')-olide and 11R-jalapinolic acid 11-O-(α-L-rhamnopyranosyl-(1→2))-β-D-quinovopyranosyl(qui'')-(1→3)-β-D-quinovopyranosyl-(1→2)-β-D-quinovopyranosyl-1, 2(qui'')-olide on the basis of chemical and spectral data. Muricatic acid C previously obtained was also characterized as the glycosidic acid of 2.

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