Xue S R, Liu J Q, Wang G
Department of Pharmacy, Anhui College of Traditional Chinese Medicine, China.
Phytochemistry. 1992 Mar;31(3):1049-50. doi: 10.1016/0031-9422(92)80072-m.
A new triterpenoid saponin, clinopodiside A, has been isolated from Clinopodium polycephalum. Its structure was established by spectroscopic methods and X-ray diffraction analysis as 3-O-beta-D-glucopyranosyl(1----6)-[ beta-D-glucopyranosyl (1----4)]-beta-D-glucopyranosyl-olean-11,13(18)-diene-3 beta,16 beta, 23,28-tetrol.