ISSN:
0170-2041
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Enolates of Carbohydrates, 5. - Syntheses of Axially Methyl-Branched PyranosidulosesThe α-C-methylated carbohydrates 3 and 5 are available from the benzoyl- and benzylidene-protected 2- and 3-uloses 1a, 2, and 4 by reaction with potassium tert-butoxide/methyl iodide in N,N-Dimethylformamide. Under the same conditions the 2-O-benzyl-3-ulose 1b yields the enol ether 6a, and the enolone 8 is obtained from the 2-O-benzoyl-3-ulose 7.
Notes:
Die benzoyl- und benzylidengeschützten 2- und 3-Ulosen 1a, 2 und 4 werden mit Kalium-tert-butylat/Methyliodid in N,N-Dimethylformamid zu den in α-Stellung methylierten Produkten 3 und 5 umgesetzt. Unter den gleichen Bedingungen reagiert die 2-O-Benzyl-3-ulose 1b zum Enolether 6a, die 2-O-Benzoyl-3-ulose 7 zum Enolon 8.
Additional Material:
1 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/jlac.198719870824
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