The invention provides compounds of formula (I), wherein R1, R2, R3, R4, R5, R6a, R6b, R6c, R6d, R6e and R7 are defined in the specification. These compounds are useful as antibiotic agents.
本发明提供了式 (I) 的化合物,其中 R1、R2、R3、R4、R5、R6a、R6b、R6c、R6d、R6e 和 R7 的定义见说明书。这些化合物可用作
抗生素制剂。