title: Azasteroids IV. Synthesis of 13-aza-18-norequilenin methyl ether.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D006571:Heterocyclic Compounds; D011083:Polycyclic Compounds; D013256:Steroids
chemical_list: D006571:Heterocyclic Compounds; D011083:Polycyclic Compounds; D013256:Steroids