The present invention relates to a compound of the formula [I]:
wherein R1 is lower alkyl or hydroxy(lower)alkyl, and
R2 is hydrogen or amino protecting group, or
R1 and R2 are bonded together and form lower alkylene;
R is -A-R6 wherein A is bond, —NHCO—(CH2CO)n—, lower alkylene, —NH—CO—CO— or the like, and
R6 is
wherein R7, R8, R9 and R10 are independently amino, guanidino, amidino or the like;
R4 is carboxy or protected carboxy; and
R5 is amino or protected amino, or a pharmaceutically acceptable salt thereof, a process for preparing a compound of the formula [I], and a pharmaceutical composition comprising a compound of the formula [I] in admixture with a pharmaceutically acceptable carrier.
本发明涉及一种化合物,其
化学式为[I]:其中,R1是较低的烷基或羟基(较低的)烷基,且R2是氢或
氨基保护基,或者R1和R2相互结合形成较低的烷基;R为-A-R6,其中A是键,—NHCO—(CH2CO)n—,较低的烷基,—NH—CO—CO—或类似物,且R6为:其中,R7、R8、R9和R10独立地是
氨基、
鸟氨酸基、酰胺基或类似基团;R4是羧基或保护羧基;R5是
氨基或保护
氨基,或其药学上可接受的盐,以及制备化合物[I]的方法和包含化合物[I]的药物组合物与药学上可接受的载体混合。