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PubMed:16098494 JSONTXT

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sentences

Id Subject Object Predicate Lexical cue
TextSentencer_T1 0-121 Sentence denotes One-pot alpha-glycosylation pathway via the generation in situ of alpha-glycopyranosyl imidates in N,N-dimethylformamide.
TextSentencer_T2 122-303 Sentence denotes Divergent pathways are disclosed in the activation of 2-O-benzyl-1-hydroxy sugars by a reagent combination of CBr4 and Ph3P, all of which afford one-pot alpha-glycosylation methods.
TextSentencer_T3 304-520 Sentence denotes When this reagent is used in CH2Cl2, the 1-hydroxy sugar is converted to the alpha-glycosyl bromide in a conventional way and leads to the one-pot alpha-glycosylation method based on a halide ion-catalytic mechanism.
TextSentencer_T4 521-624 Sentence denotes In either DMF or a mixture of DMF and CHCl3, however, alternative alpha-glycosyl species are generated.
TextSentencer_T5 625-855 Sentence denotes From the 1H and 13C NMR study of the products, as well as the reactions using Vilsmeier reagents [(CH3)2N+=CHX]X- (X=Br and Cl), these were identified as cationic alpha-glycopyranosyl imidates having either Br- or Cl- counter ion.
TextSentencer_T6 856-1065 Sentence denotes The cationic alpha-glycosyl imidate (Br-), derived specifically in the presence of DMF, is more reactive than the alpha-glycosyl bromide and thus is responsible for the accelerated one-pot alpha-glycosylation.
TextSentencer_T7 1066-1256 Sentence denotes The one-pot alpha-glycosylation methodology performed in DMF was assessed also with different types of acceptor substrates including tertiary alcohols and an anomeric mixture of 1-OH sugars.
T1 0-121 Sentence denotes One-pot alpha-glycosylation pathway via the generation in situ of alpha-glycopyranosyl imidates in N,N-dimethylformamide.
T2 122-303 Sentence denotes Divergent pathways are disclosed in the activation of 2-O-benzyl-1-hydroxy sugars by a reagent combination of CBr4 and Ph3P, all of which afford one-pot alpha-glycosylation methods.
T3 304-520 Sentence denotes When this reagent is used in CH2Cl2, the 1-hydroxy sugar is converted to the alpha-glycosyl bromide in a conventional way and leads to the one-pot alpha-glycosylation method based on a halide ion-catalytic mechanism.
T4 521-624 Sentence denotes In either DMF or a mixture of DMF and CHCl3, however, alternative alpha-glycosyl species are generated.
T5 625-855 Sentence denotes From the 1H and 13C NMR study of the products, as well as the reactions using Vilsmeier reagents [(CH3)2N+=CHX]X- (X=Br and Cl), these were identified as cationic alpha-glycopyranosyl imidates having either Br- or Cl- counter ion.
T6 856-1065 Sentence denotes The cationic alpha-glycosyl imidate (Br-), derived specifically in the presence of DMF, is more reactive than the alpha-glycosyl bromide and thus is responsible for the accelerated one-pot alpha-glycosylation.
T7 1066-1256 Sentence denotes The one-pot alpha-glycosylation methodology performed in DMF was assessed also with different types of acceptor substrates including tertiary alcohols and an anomeric mixture of 1-OH sugars.