Cryptoporic acids A and B, novel bitter drimane sesquiterpenoid ethers of isocitric acid, from the fungus

Lee, 1981, Hanguk Kyunhakhoe Chi, 9, 153 Kim, 1982, Hanguk Kyunhakho Chi, 10, 117 Asakawa, 1986, Phytochemistry, 25, 2555, 10.1016/S0031-9422(00)84508-2 Asakawa, 1985, Pytochemistry, 24, 261, 10.1016/S0031-9422(00)83533-5 Ohta, 1977, Tetrahedron, 33, 617, 10.1016/0040-4020(77)80301-3 Chass, 1978, J. Org. Chem., 43, 1750, 10.1021/jo00403a027 Kaneko, 1960, Chemistry and Industry, 1187 Fujimoto, 1976, Tetrahedron Letters, 37, 3325, 10.1016/S0040-4039(00)93913-3 Donnely, 1980, J. Chem. Soc., 10, 2196