Conformational studies on aldonolactones by N.M.R. spectroscopy_ conformations of d-glucono-, d-mannono-, d-gulono- and d-galactono-1,4-lactone in solution☆☆☆

Add time:08/30/2019    Source:sciencedirect.com

The conformations of d-glucono-, d-mannono-, d-gulono-, and d-galactono-1,4-lactone in solution were studied by 1H- and 13C-n.m.r. spectroscopy. The two equilibrating, envelope forms [3E(D) and E3(D)] of the lactone ring are weighted strongly in favor of the conformation having the OH-2 group quasiequatorially oriented, except for d-glucono-1,4-lactone. Side-chain CHOHCH2OH groups adopt orientations devoid of unfavorable, 1,3-parallel interactions of OH groups.

We also recommend Trading Suppliers and Manufacturers of D-Gulono-1,4-lactone 2,3,5,6-Tetraacetate (cas 136345-68-1). Pls Click Website Link as below: cas 136345-68-1 suppliers

Prev:Determination of the second-order 1H NMR parameters for the aromatic protons in 4-fluoroaniline and application to the analysis of the 1H NMR spectra for the aromatic protons in N4-(4′-fluorophenyl)succinamic acid and in N4-(4′-fluorophenyl)-3,3-difluorosuccinamic acid
Next:Central serotonergic S2 binding in Papio anubis measured in vivo with N-ω-[18F]fluoroethylketanserin and PET)