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Hexopyranosyl fluoride

Additional n.m.r.-spectral data have been become available since about mid-1986. Further data for hexopyranosyl fluorides,as well as for 2-deoxy-2-fluoro-hexopyranoses and -hexopyranosides, " " have been reported by several groups, whereas only a few articles dealt with pento-pyranose or hexofor pento)furanose analogs " of these compounds. [Pg.331]

Deoxy-a-D-ribo-hexopyranosyl Fluoride 3,6-Di-O-benzoyl ElOb, 311 (En + IIF)... [Pg.869]

D. J. Baillargeon and G. S. Reddy, Novel 2,6-anhydro-/l-D-hexopyranosyl fluorides by fluorination of l,6-anhydro-/j-D-hexopyranoses with diethylaminosulfur trifluoride, Carbohydr. Res., 154 (1986) 275-279. [Pg.177]

In an extension of the work, treatment of 2-deoxy-/M)- /- /vw -hexopyranose tetraacetate with anhydrous HF yielded a major proportion of 3,4,6-tri-0-acetyl-2-deoxy-a-D-arabmo-hexopyranosyl fluoride, with some of the /i-anomer. However, a similar reaction of 2-deoxy-/ -D-arabmo-hexopyranose tetrabenzoate afforded exclusively 3,4,6-tri-0-benzoyl-2-deoxy-z-D- rai>/n -hexopyranosyl fluoride. The oc anomeric configuration of the major products followed from the large values (38.0-38.3 Hz) of the Fj a coupling constants, the F,. H2c couplings being much smaller (5.0-5.3 Hz). [Pg.16]

Tri-( -benzoyl-D-glucal is hydrofluorinated with hydrogen fluoride at — 70 C for 20 hours to yield 3,6-di-0-benzoyl-2-deoxy-a-D-n7)o-hexopyranosyl fluoride (5). ... [Pg.311]

Deoxy-a-D-arabino-hexopyranosyl-fluorid 3,4,6-Tri-O-acetyl-E14a/3, 645 (O-Ae -> F), 646 (S-Ar - F)... [Pg.1041]

The configuration of some derivatives of 2-deoxy-a-D-hexopyranosyl fluoride have been determined by n.m.r. methods. The observation was made that the geminal 72a,2e coupling is smaller (ca. 12 c./sec.) when the electronegative anomeric substituent is equatorially orientated than when the anomeric substituent is in the axial orientation (13-5-13-9 c./sec.). [Pg.74]

The acetate 211a reacts in 5 minutes at —70° to give 3,4,6-tri-O-acetyl-2-deoxy-a-D-arabino-hexopyranosyl fluoride (212a), and after 24 hours at —70°, likewise by way of the unsaturated ion 215a, to the ion 216a. The high stability of the ions of type 216 is also evident in the pentose series. Thus, compounds 220, 221, 223, and... [Pg.187]

I. Lundt and C. Pedersen, Rearrangement, and tetra-O-benzoyl-2-deoxy-P-D-arabino-hexopyranose into 3,6-di-0-benzoyl-2-deoxy-a-D-ribo-hexopyranosyl fluoride with anhydrous hydrogen fluoride, Acta Chem. Scand, 21 (1967) 1239-1243. [Pg.12]

Deoxy-fA "eo-hexopyranos-... - 2-Deoxy- ra6ino-hexopyranosyl fluoride... [Pg.314]

Deoxy-fyxo-hexopyranosyl fluoride - 2-Deoxy-araAino-hexose, 9CI, SCI... [Pg.315]

Deoxy-a.-T> Xylo -hexopyranosyl 4-deoxy-a-D-x y/o -hexopyranoside, D-195 2-Deoxy-ara >mo-hexopyranosyl fluoride, D-196... [Pg.1028]

Deoxy-/j xo-hexopyranosyl fluoride, D-197 2-Deoxy-ri6o-hexopyranosyl fluoride, D-198 2-Deoxy-D-xj /o-hexose / -toluidinimide, D-208... [Pg.1028]

Deoxy-am fno-hexopyranosyl fluoride a-G-forrrv, 3,6-Dibenzoyl, D-196 2-Deoxy-/> xo-hexopyranosyl fluoride a-G-form 3,6-Dibenzoyl, D-197 2-Deoxy-/j x< -hexopyranosyl fluoride a-D-/orm 4,6-Dibenzoyl, D-197 2-Deoxy-n7)o-hexopyranosyl fluoride (x-G-fomv, 3,6-Dibenzoyl, D-198 2-Deoxy-am )ino-hexopyranosyl fluoride a-D-/< rm Tri-Ac, D-196 2-Deoxy-am6ino-hexopyranosyl fluoride a-D-/< rm Tribenzoyl, D-196 2-Deoxy-/vxo-hexopyranosyl fluoride a-D-/owi Tribenzoyl, D-197 2-Deoxy-W6o-hexopyranosyl fluoride a.-G-fomv, Tribenzoyl, D-198 2-Deoxy-ara >ino-hexopyranosyl fluoride a.-G-form, D-196 2-Deoxy-/> xo-hexopyranosyl fluoride a.-G-form, D-197 2-Deoxy-W6o-hexopyranosyl fluoride a-G-form, D-198 l-Deoxy-l-iodo-2,3 4,5-di-0-isopropylidene-p-D-fructopyranose, D-254 l-Deoxy-l-iodo-2,3 4,6-di-0-isopropylidene-a-L-sorbofuranose, D-273... [Pg.1160]

Deoxy-amWno-hexopyranosyl fluoride a-D-form, 3,6-Dibenzoyl, D-196... [Pg.1196]

Deoxy-/j> xo-hexopyranosyl fluoride d-D-form, 3,6-Dibenz yl, D-I97 2-Deoxy-/yxo-hexopyranosyl fluoride oe-D-ybrm 4,6-Dibenzoyl, D-I97 2-Deoxy-ri7><7-hexopyranosyl fluoride -D-form, 3,6-Dibenzoyl, D-I98 2-Deoxy-[Pg.1196]

See other pages where Hexopyranosyl fluoride is mentioned: [Pg.101]    [Pg.105]    [Pg.123]    [Pg.203]    [Pg.230]    [Pg.234]    [Pg.257]    [Pg.258]    [Pg.264]    [Pg.275]    [Pg.82]    [Pg.129]    [Pg.131]    [Pg.131]    [Pg.160]    [Pg.361]    [Pg.17]    [Pg.18]    [Pg.217]    [Pg.186]    [Pg.85]    [Pg.315]    [Pg.315]    [Pg.86]    [Pg.86]   


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Hexopyranosyl fluoride preparation

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