A compound represented by formula (1):
wherein
AA represents a particular amino acid residue or a C1-6 alkyl ester thereof, and when there is a plurality of AAs, each AA may be the same as or different from each other and AAs are bonded to each other via an amide bond;
an N-terminal nitrogen atom of (AA)m forms an amide bond together with carbonyl (a);
Q represents an unsubstituted phenyl group, or a group represented by formula (Q-1), formula (Qa-2), formula (Qa-3), formula (Qa-4), formula (Qa-5), formula (Qa-6) or formula (Qa-7);
R1a and R1b each independently represent a hydrogen atom or a C1-6 alkyl group; and
m represents an integer of 1 to 10,
or a salt thereof.
式 (1) 所代表的化合物:
其中
AA 代表特定的
氨基酸残基或其 C1-6 烷基酯,当有多个
AA 时,每个
AA 可以相同或不同,
AA 之间通过酰胺键结合;
(
AA)m 的 N 端氮原子与羰基 (a) 形成酰胺键;
Q 代表未取代的苯基,或由式(Q-1)、式(Qa-2)、式(Qa-3)、式(Qa-4)、式(Qa-5)、式(Qa-6)或式(Qa-7)代表的基团;
R1a 和 R1b 各自独立地代表氢原子或 C1-6 烷基;以及
m 代表 1 至 10 的整数、
或其盐。