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P. Ho (1979)
Branched-chain sugars. Reaction of furanoses with formaldehyde: A simple synthesis of D- and L-apioseCanadian Journal of Chemistry, 10
T. Claridge (1999)
High-Resolution NMR Techniques in Organic Chemistry
Doklady Chemistry, Vol. 387, Nos. 4–6, 2002, pp. 344–346. Translated from Doklady Akademii Nauk, Vol. 387, No. 6, 2002, pp. 782–784. Original Russian Text Copyright © 2002 by Nifant’ev, Lipovtsin, Dudakova, Shashkov, Koroteev. CHEMISTRY Corresponding Member of the RAS E. E. Nifant’ev, E. V. Lipovtsin, T. V. Dudakova, A. S. Shashkov, and M. P. Koroteev Received September 4, 2002 Branched sugars are the components of plant glyco- shielding of the phosphorus atoms in two amidophos- sides, antibiotics, and other substances showing high phites 2a and 2b. biological activity [1, 2]. These compounds are present Thionophosphates 3a and 3b were separated from in the human organism as conjugates with bilirubin [3]. each other and isolated in the individual state. Their However, chemical modifications of branched sugars structure was confirmed by NMR spectroscopy. Exper- have been poorly studied, and no information on their imental data are given in Tables 1 and 2. cyclophosphorylation is available. 1 The H NMR spectra of two isomers 3a and 3b were 1 31 Therefore, our purpose was to extend our research assigned by analyzing 2D COSY and H/ P HMQC of the cyclophosphorylation of common aldoses with spectra. Proton signals were found from the COSY
Doklady Chemistry – Springer Journals
Published: Oct 10, 2004
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