| 摘要 |
A novel erythromycin derivative represented by the following general formula or a salt thereof: <CHEM> wherein R represents a hydrogen atom or a lower alkyl group; R<1> represents an alkyl group, a cycloalkyl group, a (cycloalkyl)alkyl group, an aralkyl group, or a group represented by the formula -(CH2)n-X-R<4>; R<2> represents a hydrogen atom or an acetyl group; R<3> represents an acyl group or a group represented by the formula -C(=O)-Y-R<5>; R<4> represents an alkyl group, an alkoxyalkyl group, an alkylthioalkyl group, an alkylaminoalkyl group, an aryl group, or an aralkyl group; R<5> represents an alkyl group, an aryl group, or an aralkyl group; n represents an integer of from 1 to 6; X represents an oxygen atom, a sulfur atom, or a group represented by -NZ-; Y represents an oxygen atom or a group represented by -NH-; and Z represents a hydrogen atom or an alkyl group. The derivative has excellent antibacterial activity against atypical acid-fast mycobacteria including multiple drug-resistant bacteria and is extremely useful as an antibacterial agent. |
