Chapter 1 – Definition, typology, and occurrence of alkaloids

摘要: Alkaloids are a group of molecules with relatively large occurrence in nature around the globe. They very diverse chemicals and biomolecules, but they all secondary compounds derived from amino acids or transamination process. classified according to that provide their nitrogen atom part skeleton. Similar alkaloids can have quite different biosynthetic pathways bioimpacts. l-lysine, l-ornithine, l-tyrosine, l-tryptophan, l-histidine, l-phenylalanine, nicotinic acid, anthranilic acetate, amination reactions. The terpenoid, steroid, purine also important. Millions people globe use every day whether starting cup coffee drinking tea afternoon. occur animal kingdom. Unlike plants, source these an animal’s body be endogenous exogenous. participating both producer consumer chains nature. vital feeding enjoy activation, aggression, defense various species. Homo sapiens is one them.