ABSTRACf Previously unknown methyl 2,3-diacetamido-2,3-dideoxy-a-D-hexopyranosides having the gulo, allo, galacto, ido, and altro configurations, as well as 2,3-diacetamido-2,3-dideoxy-D-galactose, have been synthesised. 13C-N.m.r. data for all eight methyl 2,3-diacetamido-2,3-dideoxy-cu-D-hexopyran
N.m.r. spectra (1H- and 13C-) of methyl-2-acetamido-2-deoxy-d-hexopyranosides in the presence of lanthanide ions
โ Scribed by Kunihiko Izumi
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 600 KB
- Volume
- 170
- Category
- Article
- ISSN
- 0008-6215
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
## Abstract Proton and carbon magnetic resonance spectra of Lewisite or dichloro(__trans__โ2โchlorovinyl)arsine have been measured and the results are compared with the n.m.r. spectral parameters of other __trans__โ1,2โsubstituted ethylenes. The coupling constants can be rationalized by substituent
## Abstract ^13^C n.m.r. spectra of a series of __N__,__N__โdisubstituted thioamides have been recorded and signal assignments were performed. Separate signals are observed for methylene groups fixed on the nitrogen atom. Since the carbon atom __syn__ to the thiocarbonyl sulfur resonates at higher
Both 'H-and 13C-n.m.r. spectroscopy have been employed in structural studies of the 4,6-O-benzylidene-D-aldohexopyranosides and derivatives, including some deoxy sugars . I4 We now report i3C-n.m.r. data (Table I) for the 4,6-O-benzylidene derivatives of methyl 2-deoxy-( 2) 2-deoxy-3-O-methyl-(3),
Man-(1+6)]-/3-o-Man-OMe, which are structural elements of xylose-containing carbohydrate chains from N-glycoproteins, have been made on the basis of 1D and 2D (DQF 'H-JH COSY, HOHAHA) 500-MHz 'H-n.m.r. spectroscopy and 1D SO-MHz i3C-n.m.r. spectroscopy, respectively. EXPERIMENTAL N.m.r. methods. -N.
The 'H-and "C-n.m.r. spectra of seven in&lo1 methyl ethers were recorded and assigned. They were classified into five types, and the effect of 0methyl&ion on the chemical shifts of each type is discussed. NOTE ADDED IN PROOF Type F, not encountered in our work, occurs in 1,6-anhydro-3-O-methyl-& D