Hydrazide Derivatives

摘要

A compound represented by the following general formula (1) or a salt thereof or a hydrate of the foregoing is safe while exhibiting suitable physicochemical stability, and is useful as therapeutic or prophylactic agents for diseases associated with thrombus formation. wherein R^1a, R^1b, R^1c and R^1d each independently represent hydrogen, etc., R² represents optionally substituted phenyl, etc., R³ represents optionally substituted C6-10 aryl, etc., Z¹, Z² and Z³ each independently represent hydrogen, etc., Z⁴ represents hydrogen, etc. and X represents a single bond or -CO-, etc.