A compound of the formula (I): wherein R1 represents a C1-C6 alkyl, (C1-C6 alkyl)amino, di(C1-C6 alkyl)amino or a nitrogen-containing saturated heterocyclic; R2 and R3 are the same or different and represent hydrogen or a C1-C6 alkyl; Ra represents hydrogen, C1-C6 alkyl or C2-C6 alkenyl or together with R2 represents a C1-C3 alkylene; Arom represents a heteroaryl; A represents a C1-C6 alkylene; E represents a single bond, oxygen, sulphur or R4NR4—, wherein R4 is hydrogen or C1-C7 alkenoyl; X1 and X2 both represent oxygen; X2 is attached at the 3-position or the 4-position; or a pharmacologically acceptable salt or ester thereof. The compound has superior acetylcholinesterase inhibitory action and selective serotonin reuptake inhibitory action, and is useful for treating Alzheimer's disease, depression, Huntington's chorea, Pick's disease, tardive dyskinesia, compulsive disorders or panic disorders.