| abstract |
Compounds of formula (II):n whereinn n R1 is hydrogen or C 1-4 alkyl, R 2 is hydrogen or C 1-6 alkyl, R 3 is hydrogen, nitro or C 1-6 alkyl and, when Y representsn and R 2 and R 3 are hydrogen, the nitro radical is in the meta-or para- position on the benzene ring. nare novel and have antimycoplasmal activity. They may be produced by esterification of the corresponding carboxylic acid salt. |