Summary
The main features of the structure of the pectic acid from the racemes of German chanomile have been established. The main polysaccharide chain consists of D-galacturonic acid residues in the pyranose form with α-1→4 bonds. Isolated single-unit branches of the neutral monosaccharides galactose, arabinose, and xylose are possible. L-rhamnose, which was isolated from the degradation products of the permethylated pectic acid only in the form of 3,4-di-O-methyl-L-rhamnose is apparently included in the main polysaccharide chain.
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Additional information
I. P. Pavlov Ryazan' Medical Institute. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 186–189, March–April, 1977.
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Yakovlev, A.I., Gorin, A.G. Structure of the pectic acid of Matricaria chamomilla. Chem Nat Compd 13, 160–162 (1977). https://doi.org/10.1007/BF00563936
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DOI: https://doi.org/10.1007/BF00563936