11,11-ethylenedioxy-9βH-abieta-13(15)-en-12-one

(3R,4aR,4bS,8aS,10aS)-4b,8,8-trimethyl-2-(propan-2-ylidene)dodecahydro-1H-spiro[phenanthrene-4,2'-[1,3]dioxolan]-3-ol

15-hydroxy-12-abieten-11-one

(4aS,6aS,7aS,8aS,9aS,9bS)-7a-(2-hydroxypropan-2-yl)-4,4,9b-trimethyldodecahydrophenanthro[2,3-b]oxiren-9(1H)-one

(4aS,6aS,7aS,8aS,9aR,9bS)-9a-bromo-7a-(2-hydroxypropan-2-yl)-4,4,9b-trimethyldodecahydrophenanthro[2,3-b]oxiren-9(1H)-one