Pyridine and piperidine alkaloids

Alkaloids, e.g. piperine, coniine, trigonelline, pilocarpine, nicotine and sparteine, possess a pyridine or modified pyridine heterocyclic ring system (e.g. piperidine ring). Piperine Piperine, molecular formula Ci7H19NO3, a component of black pepper (Piper nigrum), has been used in various traditional medicine preparations, and also as an insecticide. Piperine has various effects on human drug metabolizing enzymes, and is marketed under the brand name, Bioperine , as an adjunct for increasing...