(1R,4aR,10aR)-6-Acetylamino-7-amino-1,4a-dimethyl-1,2,3,4,4a,9,10,10a-octahydro-phenanthrene-1-carboxylic acid methyl ester

methyl (1R,4aR,10aR)-6-acetamido-1,4a-dimethyl-7-nitro-1,2,3,4,4a,9,10,10a-octahydro-phenanthrene-1-carboxylate

methyl (1R,4aR,10aR)-6-butyramido-1,4a-dimethyl-7-nitro-1,2,3,4,4a,9,10,10a-octahydro-phenanthrene-1-carboxylate

methyl (1R,4aR,10aR)-1,4a-dimethyl-6-nitro-1,2,3,4,4a,9,10,10a-octahydro-phenanthrene-1-carboxylate

(1R,4aR,10aR)-7-Amino-6-butyrylamino-1,4a-dimethyl-1,2,3,4,4a,9,10,10a-octahydro-phenanthrene-1-carboxylic acid methyl ester