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Gulopyranoside 2,3-anhydro

Treatment of benzyl 2-acetamido-3,4-anhydro-2-deoxy-6-C>-trityl-a-D-allopyranoside (412) with tetrabutylammonium fluoride [BU4NF in refluxing (refl.) MeCN, 24 h] gave, under diaxial ring-opening, benzyl 2-acetamido-2,4-dideoxy-4-fluoro-6-f9-trityl-a -D-gulopyranoside (413), in... [Pg.163]

With sodium hydroxide, methyl 2,3-anhydro-a-D-allopyranoside yields methyl 3,6-anhydro-a-D-glucopyranoside by intramolecular attack on the epoxide ring by the 6-hydroxyl group.72 Methyl 2,3-anhydro-a-D-gulopyranoside behaves similarly, and its intermediacy accounts for the conversion of methyl 3,4-anhydro-a-D-galactopyrano-side into methyl 3,6-anhydro-a-D-galactopyranoside on treatment with alkali.67... [Pg.146]

Neighboring-group participation by the vicinal, trans-acetoxyl group (see p. 125) serves to explain the abnormal behavior of methyl 4-0-acetyl-2,3-anhydro-6-0-benzyl- or -trityl-a-D-gulopyranoside with hydrogen chloride in acetone, or with 80% aqueous acetic acid, which give D-galactose, instead of the D-idose, derivatives.67 In the same way, 2-0-acetyl-3,4-anhydro-D-altropyranosides yield D-man-nosides, not D-idosides.9 6z(see p. 125). [Pg.148]

J. L. Frahn, Preparation of the 2,3-anhydro-4,6-0-benzylidene derivatives of methyl a- and /J-D-talopyranoside and of methyl a-D-gulopyranoside, Aust. J. Chem., 33 (1980) 1021-1024. [Pg.183]

O. Mitsunobu, T. Kudo, M. Nishida, and N. Tsuda, Stereospecific and stereoselective reactions. 4. A one-step preparation of 2,3-anhydro-4,6-0-bcnzylidcnc- -i)-allopyrano-side and -gulopyranoside, Chem. Lett., (1980) 1613-1614. [Pg.185]

Methyl 2,3-anhydro-4,6-0-benzylidene-a-D-gulopyranoside HCl 2-substituted D-idose a 49... [Pg.191]

Me glycoside, 4-Ac Methyl 4-0-acetyl-2,3-anhydro-6-deoxy-a-D-gulopyranoside [6893-97-6]... [Pg.115]

Me glycoside, 6-tosyl Methyl 2,3-anhydro-6-O-tosyl-a-D-gulopyranoside Mp 60-62°. Md +24.7 (CHCI3). [Pg.134]

Me glycoside, 6-trityl Methyl 2,3-anhydro-6-O-trityl-a-D-gulopyranoside [5592-12-1]... [Pg.134]

Benzyl 2,3-anhydro-4-0-a-L-arabinopyranosyl-p-D-ribopyranoside, A-848 Benzyl 2,3-anhydro-4,6-0-benzylidene-a-D-allopyranoside, A-484 Benzyl 2,3-anhydro-4,6-0-benzylidene-p-D-gulopyranoside, A-639 Benzyl 2,3-anhydro-4,6-0-benzylidene-a-D-mannopyranoside, A-676 Benzyl 3,4-anhydro-2,6-dideoxy-a-L-r -hexopyranoside, A-591 Benzyl 2,3-anhydro-4- O - p-D-galactopyranosyl- p-D-ribopyranoside, G-173 Benzyl 2,3-anhydro-a-D-mannopyranoside, A-676 Benzyl 2,3-anhydro-p-D-mannopyranoside, A-676 Benzyl 3,4-anhydro-2-0-mesyl-6-0-trityl-a-D-altropyranoside, A-495 Benzyl 2,3-anhydro-4-0-methyl-p-D-ribopyranoside, A-693 Benzyl 2,3-anhydro-p-D-ery /iro-pentopyranosid-4-ulose, A-682 Benzyl 2,3-anhydro-p-L-eyy /iro-pentopyranosid-4-ulose, A-682 Benzyl 2,3-anhydro-a-D-ribopyranoside, A-693 Benzyl 2,3-anhydro-p-D-ribopyranoside, A-693 Benzyl 2,3-anhydro-p-L-ribopyranoside, A-693... [Pg.1013]

Methyl 2-0-acetyl-3,4-anhydro-a-D-arabinopyranoside, A-504 Methyl 2-0-acetyl-3,4-anhydro-p-L-arabinopyranoside, A-504 Methyl 4-0-acetyl-2,3-anhydro-6-deoxy-a-D-gulopyranoside, A-527 Methyl 4-0-acetyl-2,3-anhydro-6-deoxy-p-D-gulopyranoside, A-527 Methyl 4-0-acetyl-2,3-anhydro-6-deoxy-a-D-mannopyranoside, A-687 Methyl 4-0-acetyl-3,6-anhydro-a-D-galactopyranoside, A-620 Methyl 5-0-acetyl-2,3-anhydro-a-D-lyxofuranoside, A-664 Methyl 5-0-acetyl-2,3-anhydro-p-D-lyxofuranoside, A-664 Methyl 3-0-acetyl-2,6-anhydro-4-0-methyl-p-D-mannopyranoside, A-678 Methyl 4-0-acetyl-2,3-anhydro-a-D-rhamnopyranoside, A-687 Methyl 5-0-acetyl-2,3-anhydro-a-D-ribofuranoside, A-690 Methyl 5-0-acetyl-2,3-anhydro-p-D-ribofuranoside, A-690 Methyl 4-0-acetyl-2,3-anhydro-p-D-ribopyranoside, A-693 Methyl 4-0-acetyl-2,3-anhydro-6-0-trityl-a-D-mannopyranoside, A-676 Methyl 2-0-acetyl-p-L-arabinopyranoside, M-153 Methyl 3-0 -acetyl-2-azido-4,6-0 -benzylidene-2-deoxy-a-D-mannopyranoside, A-912... [Pg.1072]

Methyl 2,3-anhydro-4-bromo-4-deoxy-a-L-lyxopyranoside, B-84 Methyl 2,3-anhydro-4-bromo-4-deoxy-6- O -trityl-a-D-gulopyranoside, B-78 Methyl 2,3-anhydro-4-chloro-4-deoxy-a-L-xylopyranoside, C-110 Methyl 2,3-anhydro-6-deoxy-a-D-allopyranoside, A-516 Methyl 2,3-anhydro-6-deoxy-a-L-allopyranoside, A-516 Methyl 3,6-anhydro-2-deoxy-4,5 7,8-di-0-isopropylidene-D-g-/ycer(3-D-ia/o-octonate, M-174... [Pg.1074]

Methyl 2,3-anhydro-6-0-trityl-a-D-allopyranoside, A-484 Methyl 3,4-anhydro-6-0-trityl-a-D-altropyranoside, A-495 Methyl 2,3-anhydro-6-0-trityl-a-D-gulopyranoside, A-639 Methyl 2,3-anhydro-5-0-trityl-a-D-lyxofuranoside, A-664 Methyl 2,3-anhydro-5-0-trityl-p-D-lyxofnranoside, A-664 Methyl 2,3-anhydro-6-0-trityl-a-D-mannopyranoside, A-676 Methyl 2,3-anhydro-5-0-trityl-a-D-ribofnranoside, A-690 Methyl 2,3-anhydro-5-0-trityl-p-D-ribofnranoside, A-690 Methyl 3,5-anhydro-p-D-xylofuranoside, A-728 Methyl p-D-apiofuranosyl-(l ->6)-p-D-glucopyranoside, A-784 Methyl arabinofuranoside, M-152... [Pg.1074]

Anhydro-l,6-dideoxy-l-dimethylamino-D-gulitol, A-148 Benzyl 2,3,4-tri-0-acetyl-6-deoxy-a-L-gulopyranoside, D-146 6-Deoxy-3- O - p-D-galactopyranosyl-D-gulose, D-124 6-Deoxygulose a-D-Pyranose-/orm Me glycoside, 2,3-0-isopropylidene,... [Pg.1210]

Methyl 4-0-acetyl-2,3-anhydro-6-deoxy-a-D-gulopyranoside, A-521 Methyl 4-0-acetyl-2,3-anhydro-6-deoxy-p-D-gulopyranoside, ASH Methyl 3-0-acetyl-6-deoxy-a-D-gulopyranoside, D-146 Methyl 4-0 -acety l-6-deoxy-2,3-0 -isopropylidene-a-D-gulopy ranoside, D-146... [Pg.1210]


See other pages where Gulopyranoside 2,3-anhydro is mentioned: [Pg.164]    [Pg.127]    [Pg.130]    [Pg.329]    [Pg.22]    [Pg.431]    [Pg.431]    [Pg.29]    [Pg.272]    [Pg.51]    [Pg.52]    [Pg.190]    [Pg.200]    [Pg.263]    [Pg.173]    [Pg.50]    [Pg.115]    [Pg.115]    [Pg.134]    [Pg.1074]    [Pg.1140]    [Pg.1140]    [Pg.1155]    [Pg.1155]    [Pg.1156]    [Pg.1156]    [Pg.1210]   
See also in sourсe #XX -- [ Pg.48 , Pg.164 ]




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Gulopyranoside

Gulopyranoside methyl 2,3-anhydro-4,6-benzylidene

Gulopyranoside, methyl 2,3-anhydro

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