| abstract |
PROBLEM TO BE SOLVED: To provide a novel compound of cyclic depsipeptide which has antitumor activity, is chemically stable, is weak in toxicity, and can be used as a medicine. A cyclic depsipeptide compound represented by the formula (I) or (II) or a salt thereof, and a pharmaceutical composition comprising the same. (A 1 to A 3 are each independently a specific amino acid structure; Ar is N, O or a C 4-20 aromatic hydrocarbon group which may contain a halogen atom; R 1 is H or a C 1 to 6 hydrocarbon Basis) 【Selection chart】 None |