Oxygenation of 3-aryl-2-hydroxyacrylic acids. The question of linear fragmentation vs. cyclization and cleavage of intermediates
β Scribed by Jefford, Charles W.; Knoepfel, Willy; Cadby, Peter A.
- Book ID
- 118005742
- Publisher
- American Chemical Society
- Year
- 1978
- Tongue
- English
- Weight
- 684 KB
- Volume
- 100
- Category
- Article
- ISSN
- 0002-7863
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Evidence for the anomeric configurations and attachment sites of 3-deoxy-D-lyxo-2-heptulosaric acid (DHA) and apiosyl residues has been obtained through the characterization of two oligoglycosyl fragments isolated from rhamnogalacturonan II (RG-II). One of the oligoglycosyl fragments, a pentaglycosy
## Abstract magnified image The cyclization mechanism for the title compound (**2**) reacting with oneβcarbon fragment reagents or nitrous acid to afford heterobicyclic compounds 6βaminoβ3βsubstitutedβ1,2,4βtriazolo[3,4β__f__][1,2,4]triazinβ8(7__H__)βones (**3aβΌd**) or 6βaminoβ1,2,3,4βtetrazolo[5,