Three new iridoid glucosides from Hedyotis diffusa.

Three new iridoid glucosides, 6-O-p-coumaroyl, 6-O-p-methoxycinnamoyl and 6-O-feruloyl ester of scandoside methyl ester, have been isolated along with a known glucoside, asperuloside from the aerial parts of Hedyotis diffusa Willd.