C Bannister, K Burns, K Prout, D J Watkin, D G Cooper, G J Duránt, C R Ganellin, R J Ife, G S Sach
The crystal and molecular structures of ten compounds with strong structural resemblances to the cimetidine group of histamine H2-receptor antagonists, but exhibiting selective H1-receptor antagonist activity, (1)-(7), or H1 and H2 activity (8)-(10), have been determined: (1) 2-[4-(5-Bromo-3-methyl-2-pyridyl)butylamino]-5- (6-methyl-3-pyridylmethyl)-4-pyrimidone trihydrobromide (temalastine), C21H27BrN5O3+.3Br-, M(r) = 685.09, triclinic, P1, a = 6.314 (2), b = 11.192 (2), c = 19.441 (5) A, alpha = 102.47 (2), beta = 92...
April 1, 1994: Acta Crystallographica. Section B, Structural Science