3,3-[2,2-Dimethyl-1,3-propanediylbis(oxy)]-19-ethinyl-5α-androst-9(11)-ene-5,17β-diol

19-(2-bromoethenyl)-5,17β-dihydroxy-5α-androst-9(11)-ene-3-one cyclic 2,2-dimethyl-1,3-propanediyl acetal

19,11α-dihydro-5,17α-dihydroxy-3-oxo-6'H-benzo[10,9,11]-5α-estrane-17β-carbonitrile cyclic 2,2-dimethyl-1,3-propanediyl acetal

17-(acetyloxy)-6β-bromo-9,11α-dihydro-6'H-benzo[10,9,11]-19-norpregn-4-ene-3,20-dione

17-(acetyloxy)-3-ethoxy-9,11α-dihydro-6'H-benzo[10,9,11]-19-norpregna-3,5-dien-20-one