参考文献:10.1248/cpb.26.2689 摘要:TAKAHASHI K, TAKANI M. Studies on the constituents of the medicinal plants. XXI. Constituents of the leaves of Clethra barbinervis Sieb. et Zucc. (2) and the 13C-nuclear magnetic resonance spectra of 19.ALPHA.-hydroxyurs-12-en-28-oic acid type of triterpenoids. Chem. Pharm. Bull. 1978;26(9):2689–93. doi: 10.1248/cpb.26.2689.