The present invention relates to a compound of the formula [I]:
wherein
R
1
is lower alkyl which may have suitable substituent(s),
R
2
is amino, protected amino or guanidino,
R
3
is carboxy or protected carboxy,
R
4
is amino or protected amino, and A is lower alkylene, 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,可以具有适当的取代基;R2是
氨基,保护
氨基或
鸟氨酸基;R3是羧基或保护羧基;R4是
氨基或保护
氨基,A是较低的烷基
烯,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的药物组合物。