The present invention provides a compound of the formula [I]: wherein R1 is lower alkyl, etc. and R2 is hydrogen, etc., or R1 and R2 are bonded together to form lower alkylene; R3 is a group represented by wherein R6 and R7 are independently optionally protected amino, etc.; m and n are independently an integer of 0 to 6; R8 and R9 are independently optionally protected amino, etc., and q and r are independently an integer of 0 to 6, or R8 and R9, together with the adjacent alkylene(s) and the nitrogen atom, form saturated nitrogen-containing heterocycle optionally having substituent(s); R4 is lower alkyl, etc.; and R5 is amino, etc., or a pharmaceutically acceptable salt thereof.
本发明提供了一种化合物,其
化学式为[I]:其中R1是低
碳基等,R2是
氢等,或者R1和R2结合形成低
碳基
烯;R3是一个由表示的基团,其中R6和R7分别是可选的保护
氨基等;m和n分别是0到6的整数;R8和R9分别是可选的保护
氨基等,q和r分别是0到6的整数,或者R8和R9与相邻的烷基和
氮原子结合形成饱和的含
氮杂环,该杂环可以有取代基;R4是低
碳基等;R5是
氨基等,或其药学上可接受的盐。