... permethylation of glycolipid andpolysaccharide catalyzed by m ethylsul®nyl carbanion in dimethylsulfoxide. J. Biochem. (Tokyo) 55, 205±208.14. Vestal,M.L.,Juhasz,P.&Martin,S.A.(1995)Delayedextractionmatrix-assisted ... Gamian1and Yuriy A. Knirel21L. Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocøaw, Poland;2N. D. ZelinskyInstitute of Organic Chemistry, Russian ... spectroscopy, u sing two-dimen-sional1H,1H COSY, TOCSY, NOESY, and H-detected1H,13C h eteronuclear corr elation experiments. It was foundthat PS in cludes two structurally dierent polysaccharides:an...