70613-79-5Relevant academic research and scientific papers
D-arbinose-based synthesis of homo-C-d4T and homo-C-thymidine
Doboszewski, Bogdan
experimental part, p. 875 - 901 (2010/08/19)
2,3,5-Tri-O-benzyl-D-arabinofuranosyl halides (chloride, bromide) were reacted with AllMgBr, MeMgBr, and VinMgBr to furnish anomeric mixtures of the C-glycosyl products. The factors that influenced the β/α ratio are discussed. The α,β-C-vinyl derivative was transformed into 1-deoxy-1-C-hydroxymethyl-β and α-D-arabinofuranoses (2,5-anhydro-D-glucitol and -mannitol, respectively), separable after isopropylidenation step. 2,5-Anhydro-1,3-O-isopropylidene-D-glucitol was converted into 2,5-anhydro-6-O-triphenylmethyl-D-erythro-hex-3,4-enitol and 2,5-anhydro-4,6-di-O-benzoyl-3-deoxy-D-ribo-hexitol, which were coupled with N-3-benzoylthymine under the Mitsunobu conditions to furnish two analogs of nucleosides with a -CH2- insert between sugar moieties and thymine. (Chemical Equation Presented).
Acceptor-dependent stereoselective glycosylation: 2′-CB glycoside-mediated direct β-D-arabinofuranosylation and efficient synthesis of the octaarabinofuranoside in mycobacterial cell wall
Yong, Joo Lee,Lee, Kyunghoon,Eun, Hye Jung,Heung, Bae Jeon,Kwan, Soo Kim
, p. 3263 - 3266 (2007/10/03)
(Chemical Equation Presented) A reliable and generally applicable direct method for the stereoselective β-arabinofuranosylation employing a 2′-carboxybenzyl arabinofuranoside as the glycosyl donor has been established. The acyl-protective group on glycosy
SYNTHESIS OF PHOSPHATE AND PHOSPHATES ISOSTERES OF FURANOSE SUGARS AS POTENTIAL ENZYME INHIBITORS
Maryanoff, Bruce E.,Reitz, Allen B.,Nortey, Samuel O.
, p. 3093 - 3106 (2007/10/02)
Various D-furanose monosaccharides were synthesized as possible inhibitors of the gluconeogenic enzyme fructose 1,6-bisphosphatase.These included sulfamate, phosphoramidate, and epoxy analogues of the natural substrate, fructose 1,6-diphosphate (1), and arabinose and ribose analogues of a natural inhibitor, fructose 2,6-diphosphate (2).NMR studies were conducted to establish the stereochemistry of phosphate displacement at Cl in the synthesis of arabinose 1-phosphate derivatives. β-Ribose 1,5-diphosphate (35b) was prepared with >95 percent stereoselectivity.
7-(β-D-Arabinofuranosyl)-2,4-dichloro-7H-pyrrolopyrimidine - Synthesis, Selective Displacement of Halogen, and Influence of Glyconic Protecting Groups on the Reactivity of the Aglycone
Seela, Frank,Driller, Hansjuergen
, p. 722 - 733 (2007/10/02)
Selective N-7 glycosylation of 2,4-dichloro-7H-pyrrolopyrimidine (1a) with the arabinohalogenose 5 has been achieved yielding the β-anomer 7a in 67percent yield.Debenzylation with boron trichloride results in the formation of the 2,4-dichloronucleo
2-AMINO-7-Β-D-ARABINOFURANOSYL-4-MEYHOXY-7H-PYRROLOPYRIMIDINE: A FACILE PREPARATION AND ANOMERISATION OF A 7-DEAZAPURINE NUCLEOSIDE
Seela, Frank,Winkeler, Heinz-Dieter
, p. 29 - 36 (2007/10/02)
Phase-transfer glycosylation of 2-amino-4-methoxy-7H-pyrrolopyrimidine with 2,3,5-tri-O-benzyl-D-arabinofuranosyl bromide in benzene-50percent aqueous sodium hydroxide-tetrabutylammonium hydrogensulfate gave two anomeric glycosylation products (1 and 3).Removal of the benzyl groups from 1 and 3, respectively, with boron trichloride yielded 2-ami-no-7-(α- and β-D-arabinofuranosyl)-4-methoxy-7H-pyrrolopyrimidine(4 and 2).Treatment of 2 and 4 with 2M hydrochloric acid under nitrogen caused anomerisation and demethylation without glycosylic cleavage, and reflected the extraordinary stability of pyrrolopyrimidine nucleosides towards hydrolisis.The conversion of 2 and 4 into ara-7-deazaguanosine or its α anomer was accomplished with anhydrous acid.
Synthese von Ara-Tubercidin und seiner 5'-Phosphate ueber Phasentransfer-Glycosylierung von 4-Amino-2-methylthio-7H-pyrrolopyrimidin
Seela, Frank,Tran-Thi, Quynh-Hoa,Winkeler, Heinz-Dieter
, p. 1217 - 1225 (2007/10/02)
Phase transfer glycosylation of 4-amino-2-methylthio-7H-pyrrolopyrimidine (3a) with 2,3,5-tri-O-benzyl-1-bromo-D-arabinofuranose gives the anomeric nucleoside derivatives 4a/5a in 83percent yield.They are separated chromatographically and the ratio
