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Titolo:
SYNTHESIS, NMR-SPECTROSCOPY AND CONFORMATIONAL STUDIES OF 2 VICINALLYDISUBSTITUTED TRISACCHARIDES
Autore:
JANSSON PE; KJELLBERG A; RUNDLOF T; WIDMALM G;
Indirizzi:
KAROLINSKA INST,NOVUM,HUDDINGE HOSP,ANALYT UNIT,CLIN RES CTR S-14186 HUDDINGE SWEDEN KAROLINSKA INST,NOVUM,HUDDINGE HOSP,ANALYT UNIT,CLIN RES CTR S-14186 HUDDINGE SWEDEN UNIV STOCKHOLM,ARRHENIUS LAB,DEPT ORGAN CHEM S-10691 STOCKHOLM SWEDEN
Titolo Testata:
Perkin transactions. 2
fascicolo: 1, , anno: 1996,
pagine: 33 - 37
SICI:
0300-9580(1996):1<33:SNACSO>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
ASSISTED STRUCTURAL-ANALYSIS; NUCLEAR-MAGNETIC-RESONANCE; METHYL GLYCOSIDES; 1,3-LINKED DISACCHARIDES; D-GALACTOPYRANOSIDES; C-13-NMR DATA; OLIGOSACCHARIDES; POLYSACCHARIDES; DECASACCHARIDE; CASPER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
19
Recensione:
Indirizzi per estratti:
Citazione:
P.E. Jansson et al., "SYNTHESIS, NMR-SPECTROSCOPY AND CONFORMATIONAL STUDIES OF 2 VICINALLYDISUBSTITUTED TRISACCHARIDES", Perkin transactions. 2, (1), 1996, pp. 33-37

Abstract

Two trisaccharides with 2,3-vicinal disubstitution have been synthesized and analysed by NMR spectroscopy and Monte Carlo simulations. Whenvicinal disubstitution occurs in trisaccharides, experimental NMR spectra often differ significantly from those calculated by simple additivity schemes. In the present study, small deviations from additivity occurred for the carbons at the glycosylation positions of the disubstituted sugar residues in -D-Glcp(1-->2)[beta-D-Glcp(1-->3)]alpha-D-Glcp-OMe (1) and -D-Glcp(1-->2)[beta-D-Glcp(1-->3)]alpha-D-Manp-OME (2). Monte Carlo simulations, using the HSEA force held, showed a change in the average values and in the rms fluctuations of the psi-dihedral angles of 2 compared to the corresponding disaccharides, whereas for 1 smaller changes were observed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 15/07/20 alle ore 08:36:16