BLOOD GASTRIN LEVEL ELEVATION INHIBITOR

摘要

PROBLEM TO BE SOLVED: To provide an excellent blood gastrin level elevation inhibitor. SOLUTION: This pyrrolopyridazine compound has general formula (wherein, R1is an alkenyl, a halogenoalkenyl, an alkynyl, a cycloalkyl or an optionally substituted cycloalkylalkyl; R2is H or an alkyl; R3is H, an alkyl or a hydroxyalkyl; R4is H or an alkyl; R5is an optionally substituted phenyl; A is an alkylene; and X is O or S). COPYRIGHT: (C)2004,JPO