The chemical structures of inulins, levans, highly branched fructans. and fructan oligomers from plants were determined by gas-liquid chromatography of partially methylated alditol acetates and "C nuclear magnetic resonance spectroscopy of the native polymers. Results obtained by these sensitive tec
Elucidation of the structure and conformation of a methylated tetrasaccharide-alditol acetate by n.m.r. spectroscopy
โ Scribed by Antonio De Marco; Pierluigi Gariboldi; Henriette Molinari; Luisella Verotta
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 682 KB
- Volume
- 226
- Category
- Article
- ISSN
- 0008-6215
No coin nor oath required. For personal study only.
โฆ Synopsis
The structure of the methylated derivative (1) of the tetrasaccharide-alditol-O-beta-L-rhamnopyranosyl-(1----3)-O-beta-D- xylopyranosyl-(1----4)-O-beta-L-rhamnopyranosyl-(1----2)-1,5-di-O-acetyl -L- arabinitol has been determined solely on the basis of n.m.r. data.
๐ SIMILAR VOLUMES
Enduracidin and ramoplanin belong to the large family of cyclodepsipeptide antibiotics, highly effective against Gram-positive bacteria. The primary and 3D solution structure of ramoplanin is already well known, and the primary structure of enduracidin has been determined by a combination of chemica
## Abstract The 1โNH structure for 3โazidoindazole has been demonstrated by the observation of ^1^H๏ฃฟ^1^H and ^13^C๏ฃฟ^1^H couplings involving the hydrogen atom attached to nitrogen. A comparison between 3โazidoindazole and indazole shows that both compounds have the same tautomeric structure.
H-N.m.r. spectroscopy was used to elucidate the primary structures of the carbohydrate moiety attached to asparagine at residue 53 in the first domain of turkey ovomucoid, a serine proteinase inhibitor. The carbohydrate moiety is a heterogeneous mixture of three structurally closely related complex-