title: Biosynthesis of porphyrins and related macrocycles. IV. Synthesis of isomeric aminomethylpyrromethanes for biosynthetic study.
mesh_terms: D003500:Cyclization; D006863:Hydrogen-Ion Concentration; D007536:Isomerism; D007769:Lactams / Q000138:chemical synthesis; D009682:Magnetic Resonance Spectroscopy; D008697:Methane / Q000138:chemical synthesis; D008722:Methods; D008744:Methylamines / Q000138:chemical synthesis; D011166:Porphyrins / Q000096:biosynthesis*; D011758:Pyrroles / Q000138:chemical synthesis*; D014805:Vitamin B 12 / Q000096:biosynthesis*
chemical_list: D007769:Lactams; D008744:Methylamines; D011166:Porphyrins; D011758:Pyrroles; D008697:Methane; D014805:Vitamin B 12