CYCLIC PEPTIDE COMPOUND HAVING PROTEIN TYROSINE KINASE INHIBITING ACTIVITY

摘要

PROBLEM TO BE SOLVED: To provide a new substance having strong protein tyrosine kinase inhibiting activity.

SOLUTION: It is found that a cyclic peptide compound, comprising four or five amino acid residues having two or more amino acids A of same kind, is a substance having strong protein tyrosine kinase inhibiting activity.

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