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Pentopyranosyl

C17H21N3O5 2-(3,4-Di-0-acetyl-2-deoxy-/ -L-eryf/iro-pentopyranosyl)-5,6- PPMBTZ 37 427... [Pg.418]

N. Windhab, R. Micura, M. Stanek, B. Jaun, and A. Eschenmoser, Pentopyranosyl oligonucleotide systems. 9th Communication, Helv. Chim. Acta, 86 (2003) 4270-4363. [Pg.185]

K. Augustyns, J. Rozenski, A. van Aerschot, R. Busson, P. Claes, and P. Hcrdewijn, Synthesis of a new branched-chain hexopyranosyl nucleoside—l-[2, 3 -dideoxy-3 -C-(hydroxymethyl)-ot-D-etyfhro-pentopyranosyl]- thymine, Tetrahedron 50 1189 (1994). [Pg.256]

A pentopyranosyl radical is much more flexible than a hexopyranosyl radical. Because the alkyl-anchor at C-5 is absent, the radical is now so flexible that several species of similar energy can coexist. According to ESR spectroscopic data, the arabinopyranosyl radical 9 exists as an equilibrium between the 4C19a and the B03 9b conformation, which both realize a coplanar arrangement of the C-O bond and the SOMO [9] (Scheme 6). Reactions with alkenes are unselective. However, the arabinofuranosyl radical 10 reacts with high stereoselectivity [9]. This is due to its 2E conformation in which the si-side of the radical center is sterically hindered by the large benzoyl group. [Pg.509]

Pentopyranosyl Fluoride 4.5-0-Benzylidene-3-(tert.-butyl-dimethyl-silyloxy)-2-0-methyl-F.lOa. 410 (OH -> F)... [Pg.870]

N6-(2 -Deoxy-oe-D-eryfhro-pentopyranosyl)-2,6-diamino-5-formamidopyrimid-4-one (a-FAPY-G) 0.27 0.26... [Pg.247]

Related derivatives are also available from ketopyranosyl,238 and pentopyranosyl compounds,239 and furanoid analogues, namely, 3-deoxy-3-enofuranosyl compounds, are usually made by use of eliminations from 3-esters of 1,2 5,6-diacetals of hexoses166 (see compound 151). [Pg.101]

B. Dobazewski, N. Blaton, and P. Herdewijn, Synthesis of / -configured 2, 3 -unsaturated pentopyranosyl nucleosides, Tetrahedron Lett., 36 (1995) 1321-1324. [Pg.111]

Reaction of Tri-O-benzoyl-n-pentopyranosyl Halides with 1 9-Dioxane-melhanol at 20°... [Pg.9]

Beier M, Reck F, Wagner T, Krishnamurthy R, Eschenmoser A. Chemical etiology of nucleic acid structure comparing pentopyranosyl-(2 ->4 ) oligonucleotides with RNA. Science... [Pg.1391]

See other pages where Pentopyranosyl is mentioned: [Pg.255]    [Pg.203]    [Pg.258]    [Pg.275]    [Pg.275]    [Pg.101]    [Pg.137]    [Pg.264]    [Pg.265]    [Pg.266]    [Pg.387]    [Pg.165]    [Pg.498]    [Pg.247]    [Pg.247]    [Pg.314]    [Pg.111]    [Pg.56]    [Pg.57]    [Pg.57]    [Pg.16]    [Pg.16]    [Pg.452]    [Pg.723]    [Pg.69]   


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C-Glycosyl compounds pentopyranosyl radical

Pentopyranosyl bromide

Pentopyranosyl fluorides

Pentopyranosyl pyrimidine nucleosides

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