| 摘要 |
N,N-di-substituted derivatives of 4-aminoimidazolo[4,5-c]rifamycin SV or S of the formula <IMAGE> in which R represents hydrogen or acetyl, and Am represents an amino group derived from a secondary amine, and salts of corresponding compounds with salt-forming properties, can be used as antibiotics in the therapy of infectious diseases. They can be produced by methods that are known per se, for example from 3-aminorifamycin compounds by treatment with ammonia and with a reactive derivative of a formamide of the formula Am-CH=O in any sequence. The invention relates also to the formamidines, obtainable as intermediates, of the formula <IMAGE> in which Am and R have the above meanings, and corresponding compounds of the SV series. They can be produced in a manner known per se by the treatment of a corresponding 3-aminorifamycin compound with a reactive derivative of a corresponding formamide of the formula Am-CH=O and possess antibiotic properties analogous to those of the imidazole derivatives of the formula I. |
