1988 Volume 36 Issue 5 Pages 1707-1713
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.