Abstract:
:Tea catechins, an important class of polyphenols, have been shown to have wide spectrum of antitumor activity believed to be due mainly to their antioxidative effect. In this study, the radical scavenging behavior of catechins on 2,2-diphenyl-1-picrylhydrazyl (DPPH) was studied. Two reaction products of (+)-catechin, and two reaction products of (-)-epicatechin were purified and identified. Their structures were determined on the basis of detailed high-field 1-D and 2-D NMR spectral analysis. Structure elucidation of these products can provide insights into specific mechanisms of antioxidant reactions. A possible mechanism of the formation of reaction products is suggested.
journal_name
Bioorg Med Chemjournal_title
Bioorganic & medicinal chemistryauthors
Sang S,Cheng X,Stark RE,Rosen RT,Yang CS,Ho CTdoi
10.1016/s0968-0896(02)00089-5subject
Has Abstractpub_date
2002-07-01 00:00:00pages
2233-7issue
7eissn
0968-0896issn
1464-3391pii
S0968089602000895journal_volume
10pub_type
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