STUDIES ON THE TRITERPENOID CONSTITUENTS OF THE SPORES FROM GANODERMA LUCIDUM KARST

Five compounds were isolated from the ether soluble fraction of the spores of Ganoderma lucidum. On the basis of their chemical properties and spectral data (M S, UV ,IR, ¹H and ¹³CNMR) ,they were identified as 3,7,11 , 12,15,23-hexaoxo-5α-lanosta-8-en-26-oic acid (Ⅰ), 3β , 7β-dihydroxy-11 , 15,23-trioxo-5α -lanosta-8-en-26-oic acid (Ⅱ) ,7β-hydroxy-3 ,11 ,15,23-tetraoxo-5α-lanosta-8-en-26-oic acid (Ⅲ), 3,7,11 , 15,23-pentaoxo-5α-lanosta-8-en-26-oic acid (Ⅳ), 24,25,26-trihydroxy-5α-lanosta-7,9 (11) -dien-3-one (Ⅴ), Compound Ⅰ is a new natural product, named ganosporeric acid A. Componds Ⅱ, Ⅲ, Ⅳ and Ⅴ were obtained for the first time from the spores of Ganoderma lucidum.