A Review on the Alkaloids an Important Therapeutic Compound from Plants
continuous remedies to the mankind for thousands of years. Therapeutic application of plants
includes anti-tumor, anti-viral, anti-inflammatory, anti-malarial activities. Knowledge of the
plants for the preparation of various drugs has been of great significance. Plants are
considered as a rich source of wide variety of ingredients which can be used for the
development of drug. Alkaloids are the important secondary metabolites that are known to
possess therapeutic properties. On the basis of their biosynthetic precursor and heterocyclic
ring system, the compounds have been classified into various categories which include
indole, piperidine, tropane, purine, pyrrolizidine, imidazole, quinolozidine, isoquinoline and
pyrrolidine alkaloids. Alkaloids are able to prevent the onset of various degenerative
diseases by free radical scavenging or binding with the oxidative reaction catalyst. Several
studies have been done in evaluation of alkaloids from various plants for its wide range of
pharmaceutical activities. This review provides an overview of alkaloid drugs that are
derived from the various plants and potential against various diseases.
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