Application of the 2,5-Dimethylpyrrole Group as a New and Orthogonal Amine-Protecting Group in Oligosaccharide Synthesis
✍ Scribed by Bowers, Simeon G.; Coe, Diane M.; Boons, Geert-Jan
- Book ID
- 120089446
- Publisher
- American Chemical Society
- Year
- 1998
- Tongue
- English
- Weight
- 98 KB
- Volume
- 63
- Category
- Article
- ISSN
- 0022-3263
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## Abstract magnified image A new synthetic methodology towards substituted 2‐amino‐5‐chlorothiophenes is described. Compounds of this type are important as building blocks for oligomers used in polymer research. Easily available 2‐aminothiophenes underwent Paal‐Knorr reaction to protect the free
## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable v
The 2-(allyloxy) phenyl acetyl group can be removed by a relay approach using Pd(PPh 3 ) 4 in combination with proton sponge, conditions that do not affect acetyl, benzoyl and levulinoyl esters. On the other hand, the acetyl and levulinoyl ester could be cleaved without removal of the 2-(allyloxy) p
## Abstract The fast, selective and mild removal of levulinoyl groups with hydrazine from galactose, which also carries hydroxyl functions protected with acetyl groups, enabled us, under Koenigs‐Knorr conditions, to synthesize tri‐ and tetrasaccharides containing β‐linked galactose and glucose unit