| 摘要 |
The invention concerns compounds of formula (I) in which X represents a CH2 or NH group, R represents a (CH2)nAr, N-(CH2)nAr or N=CH(CH2)nAr radical, in which n represents a whole number ranging between 1 and 6 an Ar represents an aryl or heteroaryl, optionally substituted, the dotted lines representing an optional double bond in 2(3), and Y represents a hydrogen atom or an organic carboxylic acid radical containing up to 18 carbon atoms and their additive salts with acids. The compounds of formula (I) have antibiotic properties which enable their use as medicines. |
