Constituents of the Fungus Ganoderma lucidum (fr.) karst. II. Structures of Ganoderic Acids F, G, and H, Lucidenic Acids D2 and E2, and Related Compounds

Abstract

Seven new triterpenes, ganoderic acids F, G, and H, lucidenic acids D2 and E2, compound C5’, and compound C6, were isolated from the surface part of gills of Ganoderma lucidum. The structures 3a, la, 4a, 6a, 7a, 2b, and 5b were proposed for these compounds, respectively. Detailed analyses of the proton and carbon-13 nuclear magnetic resonance (1H- and 13C-NMR) spectra were performed by using two-dimensional (2-D) 1H—1H and 1H-13C shift correlation techniques. © 1986, The Pharmaceutical Society of Japan. All rights reserved.