title: Photocyclisation of enamides. Part XI. Syntheses of benzo[i]phenanthridines related to Aza-steroids.
mesh_terms: D001378:Azasteroids / Q000138:chemical synthesis*; D003500:Cyclization; D008722:Methods; D010617:Phenanthridines / Q000138:chemical synthesis*; D010777:Photochemistry; D013260:Steroids, Heterocyclic / Q000138:chemical synthesis*
chemical_list: D001378:Azasteroids; D010617:Phenanthridines; D013260:Steroids, Heterocyclic