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Glucosyl trichloroacetimidates, reaction

Reaction of the Benzyl-Protected Glucosyl Trichloroacetimidate la-/ with 0-Nucleophiles... [Pg.39]

Reaction of Glucosyl Trichloroacetimidates of Oligosaccharides with the Nucleophile 2G... [Pg.42]

A convergent synthesis of the pentasaccharide derivative 33 of the triterpeniod saponin obtained from the plant Spergularia ramosa was achieved as outlined in Scheme 6 68 The entire assembly relied on use of the trichloroacetimidate protocol and was accomplished in a three plus two fashion. The assembly of the trisaccharide was initiated by the glycosidation of glucosyl trichloroacetimidate donor 22 with rhamnosyl diol acceptor 23 to provide disaccharide 24 in 63% yield. The latter could be used directly as the glycosyl acceptor for the reaction with xylosyl donor 25, leading... [Pg.171]

A known method [221] for the preparation of C-glycosyl cyanides from tri-chloroacetimidates has been applied to the reaction of the 0-acetyl-protected O-glucosyl trichloroacetimidate [222, 223], Reaction with trimethylsilyl cyanide gave the a-glycoside, a valuable intermediate in the synthesis of carboxylic acid derivatives or other C-glycosides, in quantitative yield. [Pg.59]

See other pages where Glucosyl trichloroacetimidates, reaction is mentioned: [Pg.35]    [Pg.41]    [Pg.133]    [Pg.897]    [Pg.1264]    [Pg.490]    [Pg.145]    [Pg.20]    [Pg.51]    [Pg.165]    [Pg.229]    [Pg.35]    [Pg.39]    [Pg.312]    [Pg.531]    [Pg.603]    [Pg.1335]    [Pg.286]    [Pg.603]    [Pg.47]    [Pg.131]    [Pg.79]    [Pg.29]    [Pg.514]    [Pg.124]    [Pg.137]    [Pg.46]   
See also in sourсe #XX -- [ Pg.41 , Pg.50 ]



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Glucosyl

Glucosylation

Trichloroacetimidate

Trichloroacetimidates

Trichloroacetimidates reaction

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