Reduction by Birch procedure of 3-methoxy-B-nor-8-isoestra-1,3,5(10)-triene
s followed by hydrolysis of reaction products furnished 19,B-bisnor-8,10-is
oanalogs of steroid androgens. With the use of the correlation NMR spectros
copy a complete assignment of signals in the H-1 and C-13 NMR spectra was p
erformed for two representatives of this steroid group, and their prevailin
g conformations in solution were established.