| abstract |
(57) [Summary] [Structure] A 2-alkyltylosin derivative represented by the general formula 1. [Chemical 1] (R 1 = lower alkyl group, R 2 = hydrogen atom or formyl group, R 3 = hydroxyl group or mycinosyl group, R 4 = hydrogen atom or hydroxyl group, X = oxygen atom or a group represented by the formula: N-OR 5 , R 5 = hydrogen atom or lower alkyl group.) [Effect] It has excellent pharmacokinetics and is useful as an antibacterial agent. |