P-L- Glucopyranose

Acetamido-1,2,4-tri-O -acety 1-3,6-dideoxy-a-L-glucopyranose, A-381 3-Acetamido-1,2,4-tri-O -acety 1-3,6-dideoxy-p-L-glucopyranose, A-381... 

Acetamido-l,4,6-tri-0-acetyl-3-deoxy-a-D-mannopyranose, A-313 3-Acetamido-l,2,5-tri-0-acetyl-3-deoxy-p-D-ribofuranose, A-330 3-Acetamido-l,2,4-tri-0-acetyl-3-deoxy-5-thio-a-D-xylopyranose, A-352 3-Acetamido-l,2,4-tri-0-acetyl-3,6-dideoxy-a-L-glucopyranose, A-381 3-Acetamido-l,2,4-tri-0-acetyl-3,6-dideoxy-p-L-glucopyranose, A-381 3-Acetamido-l,4,6-tri-0-acetyl-2,3-dideoxy-a-D-/ xo-hexopyranose,... 

Pseudo-p-L-glucopyranose, H-158 Pseudo-a-D-glucopyranose, H-158 Pseudo-a-DL-glucopyranose, H-158 Pseudo-a-L-idopyranose, H-158 Pseudo-a-DL-idopyranose, H-158 Pseudo-p-DL-mannopyranose, H-158 Pseudo-a-DL-mannopyranose, H-158 viZto-Quercitol h-form 1,2-0-Isopropylidene, tri-Ac, Q-9 viZto-Quercitol 2-Me, Q-9... 

Fig. 9. Partial structural formulas and shorthand notations for principal hemiceUuloses found in wood, where the sugar units ate noted as P-D-xylopyranose (Xylp), 4-Omethyl-a-D-glucopyranosyluronic acid (GlupU), a-L-arabinofuranose (Araf), P-D-glucopyranose (Glup), P-D-mannopyranose (Manp), and P-D-galactopyranose (Galp) for (a) arabino-4-O-methylglucuronoxylan from softwood, (b) 0-acetyl-galactoglucomannan from softwood, and...

Conversion of l,6-anhydro-4-0-benzyl-2 deoxy 2-fluoro-p-D-glucopyranose to the corresponding oxo derivative is earned out by ruthenium tetroxide generated in situ from ruthenium dioxide [54] (equation 49)... 

Thus the trans relationship between the hydroxymethyl group and the C-l hydroxy group in a-D-glucopyranose, and the cis relationship between the methyl group and the C-l hydroxy group in P-L-fucopyranose, are clearly shown. Note that representation of ketoses may require a different modification of the Fischer projection, as shown in the fructofuranose example above. Here C-2 is rotated about the bond with C-3 to accommodate the long bond to C-2 from the oxygen at C-5. 

Methyl 2,6-anhydro-a-D-altropyranoside-2 5B g l,4-Anhydro-ot-D-allopyranose-Bi,4 9 1,2-0-Ethylidene-a-D-glucopyranose- S3 10 p-L-Altropyranose-2So... 

P-D-fructofuranose a-D-glucopyranose 1,2 2,1 -dianhydride a-D-fructofuranose a-D-glucopyranose 1,1 2,2 -dianhydride P-D-fructofuranose a-D-glucopyranose 1,1 2,2 -dianhydride P-D-fructopyranose a-D-glucopyranose 1,1 2.2 -dianhydride P-D-fructofuranose a-D-glucopyranose 2,1 3,2 -dianhydride P-D-fructopyranose a-D-sorbopyranose 1,2 2,1 -dianhydride P-D-fructopyranose a-L-sorbopyranose 1,2 2,1 -dianhydride di-a-L-sorbofuranose 1,2 2,3 -dianhydride a-l-sorbofuranose a-L-sorbopyranose 2,1 3,2 -dianhydride di-a-L-sorbopyranose 1,2 2,1 -dianhydride a-D-sorbopyranose a-L-sorbopyranose 1,2 2,1 -dianhydride di p-L-sorbopyranose 1,2 2,1 -dianhydride a-L-sorbopyranose p-L-sorbopyranose 1,2 2,1 -dianhydride a-L-sorbofuranose a-L-sorbopyranose l,2 2,l -dianhydride P-L-sorbofuranose a-L-sorbopyranose 1,2 2,1 -dianhydride a-L-sorbofuranose P-L-sorbofuranose l,2 2,l -dianhydride... 

Xanthan (Figure 11) is a commercially important polysaccharide produced by the bacterium Xanthomonas campestris.187 188 The xanthan backbone consists of a P(l-4)-linked D-glucopyranose chain with a trisaccharide side chain attached at C3 to alternate glucose residues. These side chains consist of an acetylated mannose residue, a glucuronic acid residue, and a pyruvate ketal linked to a terminal mannose residue. The acetate and pyruvate content depend on the fermentation and isolation conditions used by the supplier. 

Aus 2-0-p-Toluolsulfonyl-l,6-anhydro-p-D-glucopyranose wird 1,6-3,4-Dianhydro-p-D-altropyranose 86), aus 2,4-Di-0-benzyloxycarbonyl-3-... 

Nicotinic acid, N-glucoside P1NT562 Nicotinic acid P1NT362 Nicotinoyl-l-O-P D-glucopyranose P1NT354 Nicotyrine Cured Lf... 

M. G. Ambrose and R. W. Binkley, Synthesis of deoxyhalogeno sugars. Reaction of halide ions with l,23,4-tetra-0-acetyl-6-0-[(trifiuoromethyl)sulfonyl-p-D-glucopyranose, J. Org. Chem. 48 674 (1983). 

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