Structure elucidation of 24-methylene-27-methylcholesterol from south china sea sponge (seletta tenuis lindgren)
DENG SONGZHI;LIU AIMING;DENG FUYING;ZHOU HUIQIANG;MA KAN;ZHONG CUNYINGSHI
Chin. J. Org. Chem. . 1992, (5): 501 -503 .