"Histaminrezeptorsynergist." . . "Histaminrezeptorsynergist" . . . "Struktur-Aktivitäts-Beziehung." . . "Struktur-Aktivitäts-Beziehung" . "Chemische Synthese." . . "Chemische Synthese" . "Guanidinderivate." . . "Guanidinderivate" . . . . "Arpromidine-related acylguanidines synthesis and structure-activity relationships of a new class of guanidine-type histamine H2 receptor agonists with reduced basicity" . . . . . . . . . . . "Arpromidine-related acylguanidines : synthesis and structure-activity relationships of a new class of guanidine-type histamine H2 receptor agonists with reduced basicity" . . "Arpromidine-related acylguanidines synthesis and structure-activity relationships of a new class of guanidine-type histamine H_1tn2 receptor agonists with reduced basicity" .