abstract |
1,3-OXAZINO(5,6-C)RIFAMYCINS COMPOUNDS HAVING ANTIBACTERIAL ACTIVITY AND SUITABLE AS INTERMEDIATE COMPOUNDS FOR PRODUCING 3IMINOMETHYL DERIVATIVES OF RIFAMYCIN SV. The 1,3-oxazino (5,6c)rifamycin compounds are obtained in a process by which rifamycin S is reacted with a bis-(oxymethyl)-or with a bis(alkoxymethyl)amine in an inert organic solvent. |