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.
Tetrahydropapaveroline
A leukomaine (animal alkaloid) formed in brain and liver from dopamine and L-dopa; it may be implicated in psychiatric problems.
Salsoline Alkaloids
Tetrahydroisoquinolinol alkaloids in both dextro and levo forms, originally found in SALSOLA plants.
Isoquinolines
A group of compounds with the heterocyclic ring structure of benzo(c)pyridine. The ring structure is characteristic of the group of opium alkaloids such as papaverine. (From Stedman, 25th ed)