Published September 2, 2015
| Version 10002648
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Biologically Active Caffeic Acid-Derived Biopolymer
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The high-molecular water-soluble preparations from
several species of two genera (Symphytum and Anchusa) of
Boraginaceae family Symphytum asperum, S. caucasicum, S.officinale
and Anchusa italica were isolated. According to IR, 13C and 1H
NMR, APT, 1D NOE, 2D heteronuclear 1H/13C HSQC and 2D
DOSY experiments, the main chemical constituent of these
preparations was found to be caffeic acid-derived polyether, namely
poly[3-(3,4-dihydroxyphenyl)glyceric acid] (PDPGA) or poly[oxy-1-
carboxy-2-(3,4-dihydroxyphenyl)ethylene]. Most carboxylic groups
of this caffeic acid-derived polymer of A. italica are methylated.
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References
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