| abstract |
Formula (1): [Chemical 1] [In the formula, AA represents a specific amino acid residue or a C 1-6 alkyl ester form thereof, and when there are a plurality of AAs, each AA may be the same as or different from each other. Are connected via The N-terminal nitrogen atom of (AA) m forms an amide bond with the carbonyl (a), Q is an unsubstituted phenyl group or formula (Q-1), formula (Qa-2), formula (Qa-3), formula (Qa-4), formula (Qa-5), formula (Qa-6) or Represents a group represented by the formula (Qa-7), R 1a and R 1b each independently represent a hydrogen atom or a C 1-6 alkyl group, m represents an integer of 1 to 10], or a compound or salt thereof. |