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An approach towards the synthesis of 1,2-trans glycosyl phosphates via iodonium ion assisted activation of thioglycosides

โœ Scribed by G.H. Veeneman; H.J.G. Broxterman; G.A.van der Marel; J.H.van Boom


Publisher
Elsevier Science
Year
1991
Tongue
French
Weight
296 KB
Volume
32
Category
Article
ISSN
0040-4039

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๐Ÿ“œ SIMILAR VOLUMES


Iodonium ion promoted reactions at the a
โœ G.H. Veeneman; S.H. van Leeuwen; J.H. van Boom ๐Ÿ“‚ Article ๐Ÿ“… 1990 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 271 KB

## N-iodosuccinimide (ND) in the presence of an organic acid was found to be effective for the activation of fully acylated thioglycosides leading to J&trans linked esters. On the other hand, NIS together with a catalytic amount of tri#luoromethanesu&onic acid proved to be very convenient for the ra

Activation of disarmed 2-O-alkoxycarbony
โœ Matteo Adinolfi; Gaspare Barone; Alfonso Iadonisi; Lorenzo Mangoni; Marialuisa S ๐Ÿ“‚ Article ๐Ÿ“… 2001 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 62 KB

Disarmed glycosyl trichloroacetimidates can be activated by Yb(OTf) 3 in the synthesis of 1,2-trans glycosides involving primary and secondary acceptors. Concurrent formation of orthoester side products can be avoided by the use of alkoxycarbonyl groups for the protection of the donor 2-hydroxyl.

A convenient iodonium-ion-assisted synth
โœ H. M. Zuurmond; P. A. M. van der Klein; G. H. Veeneman; J. H. van Boom ๐Ÿ“‚ Article ๐Ÿ“… 2010 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 489 KB

## Abstract The nonโ€terminal glycosyl donor, ethyl 2,3โ€diโ€__O__โ€benzoylโ€5โ€__O__โ€(chloroacetyl)โ€6โ€__O__โ€pivaloylโ€1โ€thioโ€ฮฑโ€Dโ€galactofuranoside, could be used, with the promoter __N__โ€iodosuccinimide and catalytic trifluoromethanesulfonic acid, for the preparation of ฮฒโ€Dโ€Gal__f__โ€(1โ†’5)โ€ฮฒโ€Dโ€Gal__f__โ€(1