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Synthesis 2010(9): 1512-1520
DOI: 10.1055/s-0029-1218671
DOI: 10.1055/s-0029-1218671
PAPER
© Georg Thieme Verlag
Stuttgart ˙ New York
Synthesis of Optically Pure Lactone Metabolites of Tea Catechins
Further Information
Received
11 December 2009
Publication Date:
05 February 2010 (online)
Publication History
Publication Date:
05 February 2010 (online)
Abstract
Catechins and epicatechins are extremely useful compounds in the context of biological activities. These compounds afford many metabolites, including γ-valerolactone derivatives, through metabolic pathways in the human body. Several of these γ-valerolactone metabolites were synthesized as optically pure authentic standards.
Key words
tea catechins - polyphenols - stereoselective synthesis - lactones - cyclizations
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22The ¹³C NMR chemical shifts for the C3, C4 and C5 atoms are observed at δ = 27.23, δ = 79.52, and δ = 41.21, respectively, for (R,S)-14 and at δ = 27.36, δ = 79.66, and δ = 41.31, respectively, for (S,S)-14.