20113-43-3Relevant articles and documents
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Hardegger,Montavon
, p. 1199,1203 (1946)
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1,6-Anhydro-1-thio-β-D-glucopyranose (thiolevoglucosan) and the corresponding sulfoxides and sulfone
Budesinsky, Milos,Polakova, Jana,Hamernikova, Michaela,Cisarova, Ivana,Trnka, Tomas,Cerny, Miloslav
, p. 311 - 336 (2007/10/03)
Starting 1,2,3,4-tetra-O-acetyl-6-O-tosyl-β-D-glucopyranose (3) was converted into 2,3,4-tri-O-acetyl-1-thio-6-O-tosyl-β-D-glucopyranose (6) via intermediate glycosyl bromide 4 and S-thiouronium salt 5. Treatment of compound 6 with sodium methoxide gave 1,6-anhydro-1-thio-β-D-glucopyranose (thiolevoglucosan 2a). The isomeric sulfoxides 7 and 8 were prepared by selective oxidation of thiolevoglucosan 2a with hydrogen peroxide or 3-chloroperoxybenzoic acid. The structure of new compounds was confirmed by 1H and 13C NMR spectroscopy or by X-ray analysis; magnetic anisotropy of the sulfinyl and sulfonyl group has been discussed.
Synthesis of sulfur-linked analogues of nigerose, laminarabiose, laminaratriose, gentiobiose, gentiotriose, and laminaran trisaccharide Y
Contour-Galcera, Marie-Odile,Guillot, Jean-Michel,Ortiz-Mellet, Carmen,Pflieger-Carrara, Francoise,Defaye, Jacques,Gelas, Jacques
, p. 99 - 118 (2007/10/03)
Sulfur-linked analogues of 3-O-α-D-glucopyranosyl-D-glucose (nigerose), 3-O-β-D-glucopyranosyl-D-glucose (laminarabiose), 6-O-β-D-glucopyranosyl-D-glucose (gentiobiose), O-β-D-glucopyranosyl-(1 → 3)-O-β-D-glucopyranosyl-(1 → 3)-D-glucose (laminaratriose), O-β-D-glucopyranosyl-(1 → 6)-O-β-D-glucopyranosyl-(1 → 6)-D-glucose (gentiotriose) and 3,6-di-O-β-D-glucopyranosyl-D-glucose (laminaran trisaccharide Y), namely, respectively, 3-thionigerose (6), 3-thiolaminarabiose (II), 6-thiogentiobiose (21), 3(I),3(II)-dithiolaminaratriose (16), 6(I),6(ii)-dithiogentiotriose (29) and 3(I),6(I)-dithiolaminaran trisaccharide Y (37) have been conveniently prepared by S(N)2 reactions of the corresponding anomer of D-glucopyranose 1-thiolate with suitably activated monosaccharide derivatives in N,N-dimethylformamide (for 6 and 21) or in tetrahydrofuran in the presence of a crown ether (for 11). A sequence involving the reaction of non-anomeric thiolates with 2,3,4,6-tetra-O-acetyl-α-D-glucopyranosyl bromide was alternatively used for the preparation of 11 and 21 but proved less satisfactory. The preparation of thiotrisaccharides 16, 29, and 37 involved a mixed approach.