X-ray crystallographic structure of (1S*,4aR*,9R*,10aS*)-13-phenethyl-2,3,4,9,10,10a-hexahydro-1H-1,4a-(epiminoethano)phenanthrene-8,9-diol (12), (1R,4aS,9S,10aR)-13-methyl-2,3,4,9,10,10a-hexahydro-1H-1,4a-(epiminoethano)phenanthrene-6,9-diol (19) and (1S*,4aR*,9R*,10aS*)-13-phenethyl-2,3,4,9,10,10a-hexahydro-1H-1,4a-(epiminoethano)phenanthrene 6,9-diol (22). Displacement ellipsoids are shown at the 30% level for compounds 19 and 22 and at the 50% level for compound 12.