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Catechins and Derivatives Synthesis and Pharmacological Activity Research Progress

Chang-qi Lu 2,   

  • Received:2017-04-10 Revised:2018-04-08 Online:2018-06-15 Published:2018-06-06

Abstract: Catechins not could anti-tumor, anti-oxidation, anti-bacterial, anti-virus but protect heart,brain and other pharmacological effects. Catechins mainly exist in tea plant in nature, the biosynthesis pathways has been basically cleard. On the other hand, researchers also working on chemical synthesis to acquire more quantity of catechins. Its polyhydroxy structure provides bioactivity while also making catechins unstable under neutral, alkaline and heating conditions. Catechins which ingested by human body will soon be methylated or glycosylated by biotic enzyme, resulting in lower bioavailability and limit its clinical application severely . The study found that the introduction of other groups to the catechins structure can effectively improve the stability and bioavailability, and enhance the pharmacological effects of catechins specifically, in addition, different groups could bring different effects. Among them, methyled catechin is well in allergy and reversal of tumor cell resistance, and full methylation get strongest effection. glycosylated catechins have good solubleness and prevent browning effectively. and acylated catechins’ property of anti-oxidant and anti-tumor activity also significantly enhanced due to fat-soluble significantly. The effect of substituting at different locations is also not the same, substituted at C4′ influence effects mostly. In this paper, catechin biosynthesis and chemical synthesis pathway are introduced in detail, the different derivative methods of catechins are reviewed and their pharmacological effects are described briefly. Catechins derivatives research has been matured, but there is still no drugs applicated to clinic. In the future, we could combine the different derivative methods, focus on substitute at B ring, and work for practical medical value.

Key words: biosynthesis, chemical synthesis, structural modification, pharmacological effects, research prospect

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