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. - Kikuchi ,T,.; Matsuda ,S,.; Murai ,Y,.; Kadota ,S,.; Tsubono ,K,.; Ogita ,Z.. (Chemical and Pharmaceutical Bulletin, 1986)