Carbohydrate Research, 221 (1991) xi—xu Elsevier Science Publishers B.V., Amsterdam CONTENTS Special issue: Mass Spectrometry and N.m.r. Spectroscopy Foreword Controlled reduction of acarbose: conformational analysis of acarbose and the resulting saturated products K. Bock, M. Meldal (Valby, Denmark), and S. Refn (Lyngby, Denmark) . . . . A procedure for the analysis by mass spectrometry of the structure of oligosaccharides from high-mannose glycoproteins A.-S. Angel, P. Lipniunas, K. Erlansson, and B. Nilsson (Lund, Sweden) N.m.r. studies of the conformation of analogues of methyl B-lactoside in methyl sulfoxide-d, A. Rivera-Sagredo, J. Jiménez-Barbero, and M. Martin-Lomas (Madrid, Spain) The resolution into molecular species on desorption of glycolipids from thin-layer chromatograms, using combined thin-layer chromatography and fast-atom-bombardment mass spectrom- etry K.-A. Karlsson, B. Lanne, W. Pimlott, and S. Teneberg (Goteborg, Sweden) Characterisation by 'H-n.m.r. spectroscopy of oligosaccharides, derived from arabinoxylans of white endosperm ofw heat, that contain the elements +4)[a-L-Ara/-(1 — 3)]-B-p-Xylp-(1—> or —4)[a-L-Ara/f-(1 —2)][a-L-Ara/f-(1 —3)]-B-pb-Xylp-(1> R. A. Hoffman, B. R. Leeflang, M. M. J. de Barse, J. P. Kamerling, andJ . F. G. Vliegenthart (Utrecht, The Netherlands) . One-bond carbon—proton coupling constants: angular dependence in a-linked oligosaccharides I. Tvaroska (Bratislava, Czechoslovakia) and F. R. Taravel (Grenoble, France) N.m.r. and conformational analysis of the capsular polysaccharide from Streptococcus pneumoniae type 4 C. Jones, F. Currie, and M. J. Forster (South Mimms, Gt. Britain) Solution conformation and dynamics of the octadeoxynucleotide d(CACTAGTG),: a multinuclear n.m.r. relaxation study A. N. Lane (London, Gt. Britain) N.m.r. and conformational analysis of some 2,3-disubstituted methyl a-L-rhamnopyranosides N. K. Kochetkov, G. M. Lipkind, A. S. Shashkov, and N. E. Nifant’ev (Moscow, U.S.S.R.) Characterisation of the N-linked oligosaccharides of the light chain of human glycoprotein IIb by f.a.b.-m.s. A.J. Reason, A. Dell, H. R. Morris (London, Gt. Britain), M. E. splenagiaani PA, U.S.A.), J. J. Calvete, and J.G onzalez-Rodrigez (Madrid, Spain) Analysis of sialic acid-containing mucin oligosaccharides from porcine small intestine by high- temperature gas chromatography—mass spectrometry of their dimethylamides G. C. Hansson, J.-F. Bouhours, H. Karlsson (Goteborg, Sweden), andI . Carlstedt (Lund, Sweden) xl Characterisation of minor tetra- to hepta-saccharides O-linked to human meconium glycoproteins by t.l.c-m.s. microsequencing of neoglycolipid derivatives in conjunction with conventional m.s. and ‘H-n.m.r. spectroscopy A. M. Lawson, E. F. Hounsell, M. S. Stoll (Harrow, Gt. Britain), J.F eeney (London, Gt Britain), W. Chai, J. R. Rosankiewicz, and T. Feizi (Harrow Gt. Britain) 191 Collisional-activation tandem mass spectrometry of sodium adduct ions of methylated oligosaccha- rides: sequence analysis and discrimination between a-NeuAc-(2-—+3) and a-NeuAc-(2-+6) linkages J. Lemoine, G. Strecker, Y. Leroy, B. Fournet, and G. Ricart (Villeneuve d’Ascq, France) 209 Characterisation of polysaccharides by in-source pyrolysis positive- and negative-ion direct chem- ical ionisation-mass spectrometry J. A.L omax, J. J.B oon (Amsterdam, The Netherlands), and R. A. Hoffmann (Utrecht, The Netherlands) Fast-atom-bombardment chemistry of sulfatide (3-sulfogalactosylceramide) Y. Ohashi and Y. Nagai (Tokyo, Japan) 235 Notes Measurement of the J,., ,,, coupling constants for the Escherichia coli O1A O-polysaccharide, a comparison of some n.m.r. experiments A. Helander and L. Kenne (Stockholm, Sweden) Linkage analysis in disaccharides by electrospray mass spectrometry D. Garozzo, G. Impallomeni, E. Spina (Catania, Italy), B. N. Green and T. Hutton (Altrincham, Gt. Britain) . 253 Complete assignment of the 'H- and '*C-n.m.r. spectra of the O-deacetylated glucuronoxylomannan from Cryptococcus neoformans serotype B M. A. Skelton, H. van Halbeek (Athens, GA, U.S.A.), and R. Cherniak (Atlanta, GA, U.S.A.) Author index Subjec t index