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Donor reactivity, protecting group torsional effects

It is known that 4,6-0-benzylidene protection group in a saccharide reduces its reactivity (i.e., it disarms it) in glycosylation reactions. Thus, a thiosaccharide glycosyl donor with 4,6-0-benzylidene group 77 is less reactive toward reaction with methanol than its fully benzylated analog 78 (Fig. 5.22) [17]. This phenomenon, which has been attributed to torsional effects or more specifically to the... [Pg.129]

Scheme 6.5 Tuning the reactivity of glycosyl donors torsional effect of the protecting group. Scheme 6.5 Tuning the reactivity of glycosyl donors torsional effect of the protecting group.
Influence of Protecting Group on Donor Reactivity Torsional Effects... [Pg.43]

See other pages where Donor reactivity, protecting group torsional effects is mentioned: [Pg.219]    [Pg.116]    [Pg.181]    [Pg.196]    [Pg.114]    [Pg.200]    [Pg.205]    [Pg.229]    [Pg.181]    [Pg.196]    [Pg.435]   
See also in sourсe #XX -- [ Pg.43 ]



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Donor reactivity, protecting group

Group 12 reactivity

Protecting-group effect

Protection effects

Protective effects

Protective groups reactivities

Reactive groups

Reactivity effects

Torsion effects

Torsional effects

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