| abstract |
The present invention addresses the problem of providing a novel chemically activated water-soluble prodrug. The present invention provides a compound represented by formula (1), or a pharmacologically acceptable salt thereof (in the formula, A represents A-0; X<sup>1</sup>and X<sup>2</sup>are the same as or different from each other and each independently represent a hydroxyl group or -O-C(=O)-Y-(C(R<sup>1A</sup>)(R<sup>1B</sup>))n-NH-R<sup>2</sup>, where X<sup>1</sup>and X<sup>2</sup>are not simultaneously hydroxyl groups, n is 2, 3, or 4, Y represents an oxygen atom or -NR<sup>4</sup>, R<sup>1A</sup>and R<sup>1B</sup>are the same as or different from each other and each independently represent a hydrogen atom, etc., and R<sup>2</sup>represents a hydrogen atom, etc.; and R<sup>a</sup>to R<sup>d</sup>are optionally present, are the same as or different from each other, and each independently represent a hydrogen atom, etc.). |