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AT-glycosylation

Scheme 3.—Biosynthesis of the Core Oligosaccharide AT-Glycosylically Linked to L-Asparagine in Yeast Mannans.10 11 86 11 111-117-1 8-160-161... Scheme 3.—Biosynthesis of the Core Oligosaccharide AT-Glycosylically Linked to L-Asparagine in Yeast Mannans.10 11 86 11 111-117-1 8-160-161...
AT-Glycosylic N-AcetyI-/3-D-glucosaminyl- Ananas comosus Bromelain (E) n.d.b 195... [Pg.372]

The mercury derivatives procedure has also been applied to deoxynucleosides. 2 -Deoxy-adenosine and its a-D-anomer are obtained, after deblocking, from the AT-glycosylation of chloromercurio-7V -benzyladenine with crystalline 2-deoxy-3,5-di-0-(4-toluoyl)- -D-ribofura-nosyl chloride. [Pg.433]

In the mechanistic outline to Scheme 2, the intermediate oxocarbenium ion was trapped by an oxygen nucleophile to give an 0-glycoside. Further experimentation has revealed that A-nucleophiles can also be applied, leading to At-glycosyl products [26]. Thus, if the reactions are carried out in the presence of acetonitrile, a Ritter reaction ensues affording nitrilium ion 49 (Scheme 12). This relatively unstable intermediate can be trapped... [Pg.511]

Substitution at glycosyl site. Glycosyl esters are converted to glycosyl bromides and glycosyl bromides to nucleosides by reaction with McjSiBr and silylated nucleoside bases, respectively, when promoted by BiBr. ... [Pg.45]

See other pages where AT-glycosylation is mentioned: [Pg.258]    [Pg.187]    [Pg.572]    [Pg.163]    [Pg.169]    [Pg.171]    [Pg.182]    [Pg.360]    [Pg.552]    [Pg.400]    [Pg.42]    [Pg.49]    [Pg.144]    [Pg.146]    [Pg.192]    [Pg.400]    [Pg.328]    [Pg.83]    [Pg.177]    [Pg.199]    [Pg.637]    [Pg.19]    [Pg.212]    [Pg.1945]    [Pg.129]   
See also in sourсe #XX -- [ Pg.286 ]



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