Glucopyranose methylation

Chemical Name 2-Deoxy-2-(3-methyl-3-nitrosoureido)-D-glucopyranose Common Name -... 

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... 

Tri-O-acetyl-a-D-glucopyranose (fl)-1,2-(methyl orthoacetate) or 3,4,6-tri-0-acetyl-[(fl)-1,2- >(1 -methoxyethylidene)]-a-D-glucopyranose... 

Methyl p-D-talopyranose-2-C,4-C-diylphosphinite or 2-C,4-C-fmethoxyphosphanediyl)-p-D-glucopyranose or (2fl,4S)-2-C,4-C-(methoxyphosphanediyl)-P-D-/hreo-hexopyranose... 

Nigerose Nojirimycin Noviose a-D-Glucopyranosyl-(1- 3)-D-glucose 5- Amino-5-deoxy-D-glucopyranose 6- Deoxy-5-C-methyl-4-Omethyl-L-/yxo-hexose... 

Deoxy-2-[ F]fluoro-3-(9-methyl-D-glucopyranose was prepared by the reaction of methyl 4,6-0-benzylidene-3-0-methyl-2-0-triflyl-) -D-manno-pyranoside (159) with CsH F2, and the possibility of its use as an imaging agent was examined." ... 

Fig. 8 Structures of sampangine, 3-methoxysampangine, and the transformed 4 -0-methyl-/S-glucopyranose and /S-glucopyranose conjugates [59]...

Ci9H25OgP l,2,4-Tri-0-acetyl-5,6-dideoxy-3-0-methyl-5-[(S)-phenyl- phosphinyl]-/ -D-glucopyranose TAMPGP 38 526... 

The reaction of 2-deoxy-3,4,6-tri-0-methyl-2-methylamino-D-glucopyranose 149 with methyl(phenyl)phosphonic dichlorides (106a-b) or methylthiophosphonic dichloride in benzene in the presence of triethylamine afforded mixtures of four isomers of the corresponding 1,3,2 oxazaphospholidine-2-ones 150, 151 and... 

The optical activity of this polysaccharide in water and cupram-monium solution so closely resembles that of methyl 2-methyl-/3-D-glucoside that Reeves68 has suggested that the D-glucopyranose units of the polysaccharide are linked chiefly through the 2-position (see page 231). 

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