A ketonic ester of formula (II):
wherein Y is as defined with respect to formula (I); and R represents a C3-20 alkyl, C3-8 cycloalkyl, C4-20 alkenyl, aralkyl, cycloalkylalkyl, heterocyclyl or heterocyclylalkyl group, which group is substituted with a ketonic oxo group, has antibacterial and antimycoplasmal activity and is of value in the treatment of bacterial and mycoplasma-induced human and veterinary diseases.
式(II)的
酮酯:其中 Y 如式(I)所定义;R 代表 C3-20 烷基、C3-8 环烷基、C4-20 烯基、芳烷基、环烷基、杂环烷基或杂环烷基,该基团被酮羰基取代,具有抗菌和抗支原体活性,在治疗细菌和支原体引起的人类和兽类疾病方面具有价值。