| abstract |
A compound represented by the general formula (I) or a salt thereof, wherein Rnrepresents a group represented by the following formula (A), (B) or (C) wherein R 1 andnR 2 independently represent a C 1-6 alkyl group, R 3 represents an amino group, anmono(C 1-6 alkyl)amino group, a di(C 1-6 alkyl)amino group or a C 1-6 alkoxy group and X-representsnan anion, and n represents an integer of 2 to 5. The compound or a salt isnuseful as a ligand of inositol-1,4,5-trisphosphate (IP 3 ) receptor. |