Add time:09/02/2019         Source:sciencedirect.com

The conformations of D-Glucono-1,5-lactone (cas 1335-57-5) (1) and d-mannono-1,5-lactone (2) in solution were investigated by 1H- and 13C-n.m.r. spectroscopy. Conformational equilibria for 1 and 2 were found to lie strongly in favor of the 4H3(d),gg and B2,5(d),gg conformations, respectively.

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