Study on the Constituents of Monochasma savatieri FRANCH. ex MAXIM

Abstract
Two new iridoid glucosides, tentatively named MS-5 (5) and MS-6 (6), along with three iridoid glucosides, catalpol, bartsioside and aucubin, and two phenolic glycosides, acteoside and dehydroacteoside, have been isolated from Monochasma savatieri Franch. ex Maxim. These structures were established on the basis of chemical and spectroscopic evidence.