ABSTRACT
The study of natural products is an old science that has been evolving and changing through the years (Torssell 1983). From eighteenth century onward, all the myths and magic of the use of natural products has been set aside and their use has increased their rationality. This phenomenon is based on chemistry and has started with the systematic development for separation, purification, and analysis of compounds from living organisms (Nakanishi 1992). The natural products field has accompanied this development and the basic concepts of this field have also evolved. When a new substance is isolated and analyzed, new data are accumulated. This has led to identifying big metabolic origin pathways for the diverse compounds isolated.
