title: The reaction of 3-formylrifamycin SV with sulphonium and phosphonium ylides.
mesh_terms: D001419:Bacteria / Q000187:drug effects; D007202:Indicators and Reagents; D009861:Onium Compounds; D009943:Organophosphorus Compounds; D012294:Rifamycins / Q000138:chemical synthesis* / Q000494:pharmacology; D013053:Spectrophotometry; D013871:Thiones
chemical_list: D007202:Indicators and Reagents; D009861:Onium Compounds; D009943:Organophosphorus Compounds; D012294:Rifamycins; D013871:Thiones