Title of article
New pyranoanthocyanins from blackcurrant seeds
Author/Authors
Lu، نويسنده , , Yinrong and Foo، نويسنده , , L.Yeap and Sun، نويسنده , , Yan، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2002
Pages
4
From page
7341
To page
7344
Abstract
Four new pyranoanthocyanins, namely pyranocyanin C and D and pyranodelphinin C and D, possessing the pyrano[4,3,2-de]-1-benzopyrylium core structure were isolated from an extract of blackcurrant seeds. Their chemical structures were elucidated by spectral methods and confirmed by chemical synthesis involving blackcurrant anthocyanins and p-coumaric acid. It is postulated that this condensation reaction plays a significant part in the evolution of red wine colour.
Keywords
pyranoanthocyanins , NMR , pyranocyanin C and D , pyranodelphinin C and D , blackcurrant (Ribes nigrum) , Synthesis , Grossulariaceae
Journal title
Tetrahedron Letters
Serial Year
2002
Journal title
Tetrahedron Letters
Record number
1658407
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