Showing papers on "Glycal published in 1977"

TL;DR: The key step of the synthesis involves the reaction of glycals [3,4,6,tri-O-acetyl-D-glucal (1), the new glycal derivative 4-Oacetyl, 1,5-anhydro-2,6-dideoxy-3,C-methyl,3,O-methyl-L-ribo-hex-1-enitol (2,2), and 3-acetamido-4, 6-di-O -acetyl -1, 5-anhedro-

TL;DR: Partial desulphuration of tetra-O-acetyl-β-d -glucopyranosyl phenyl disulphide with a phosphine derivative gave 40% of phenyl 2,3,4,6-tetra O-acetel-1-thio-α-d-d − glucopyranoide and a similar proportion of β- d −glucophosphine octa-acetate, showing that this procedure is of limited value in α- d -thioglucoside synthesis RE

TL;DR: In this paper, the relationship between unsaturated nucleosides is studied and an allylic carbonium ion is proposed as an intermediate for these isomerizations, and the conformation and anomeric configuration of the N -glycosyl compounds obtained were assigned by NMR spectroscopy.