.alpha.-Elaterin .alpha.-Elaterine 18444-66-1 19-Nor-9.beta.,10.alpha.-lanosta-1,5,23-triene-3,11,22-trione, 2, 16.alpha.,20,25-tetrahydroxy-9-methyl-, 25-acetate 19-Norlanosta-1,5,23-triene-3,11,22-trione, 25-(acetyloxy)-2,16, 20-trihydroxy-9-methyl-, (9.beta.,10.alpha.,16.alpha.,23E)- 5-(2,16-Dihydroxy-4,4,9,14-tetramethyl-3,11-dioxoestra-1,5-dien-17-yl)-5-hydroxy-1,1-dimethyl-4-oxo-2-hexenyl acetate AIDS-126351 AIDS126351 CUE Cucurbitacin E Cucurbitacine E ELATERIN, .alpha. NSC106399