a Faculty of Engineering, Kyushu Kyoritsu University, 1-8 Jiyugaoka Yahata-nishi-ku, Kitakyushu 807-8585, Japan
b Faculty of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Kumamoto 862-0973, Japan
Abstract:
Three new cycloartane glycosides possessing a five-membered ring, which is constructed by a C–C bond, at the side chain have been isolated from the aerial parts of Thalictrum thunbergii D.C. Their structures were determined by the use of 2D NMR techniques and chemical evidence.