.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)- CUCURBITACIN E CUE Cucurbitacine E ELATERIN, ALPHA NSC106399