Definition: A group of ISOQUINOLINES in which the nitrogen containing ring is protonated. They derive from the non-enzymatic Pictet-Spengler condensation of CATECHOLAMINES with ALDEHYDES.
Other names Tetrahydro Isoquinolines; Tetrahydro-Isoquinolines; 1,2,3,4-Tetrahydroisoquinolines
quinapril [ 2-(2-((1-(ethoxycarbonyl)-3-phenylpropyl)amino)-1-oxopropyl)-1,2,3,4-tetrahydro-3-isoquinolinecarboxylic acid,Accupril,CI 906,CI-906,PD 109452-2,PD-109,452-2,quinapril hydrochloride ] structure given in first source