| 摘要 |
A compound represented by the formula (1) [A represents a nitrogen-containing saturated ring; m represents an integer of 0 to 2; n represents an integer of 1 to 4; G<SUP>1 </SUP>represents hydrogen atom, chlorine atom, hydroxyl group, an alkoxy group, or amino group; G<SUP>2 </SUP>represents a halogen atom, hydroxyl group, cyano group, carboxy group, an alkyl group, an alkenyl group, and the like; G<SUP>3 </SUP>represents hydrogen atom, a halogen atom, hydroxyl group, cyano group, carboxy group, an alkyl group, an alkenyl group, and the like; G<SUP>4 </SUP>represents hydroxyl group, or -N(R<SUP>1</SUP>)(R<SUP>2</SUP>) (R<SUP>1 </SUP>and R<SUP>2 </SUP>represent hydrogen atom, an alkyl group, an aralkyl group, an alkenyl group, an alkynyl group, or a saturated heterocyclic group); G<SUP>5 </SUP>is a substituent on a ring-constituting carbon atom of A, and represents hydrogen atom, fluorine atom, or an alkyl group] or a salt thereof, or a derivative thereof that is a prodrug, which potently inhibits phosphorylation of the myosin regulatory light chain.
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