ISSN:
0018-019X
Schlagwort(e):
Chemistry
;
Organic Chemistry
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
3-O-benzyl (and 3-O-methyl)-1,2-O-isopropylidene-α-D-xylo-dialdo-1,4-furanoses treated with bromocyanomethylidene- or bromoacylmethylidene-triphenylphosphoranes gave in good yields the corresponding olefinic sugars. These compounds, which bear three adjacent electrophilic carbon atoms (C(5), C(6), C(7)) constitute useful synthetic intermediates in carbohydrate chemistry. They represent, for example, good starting materials for the preparation of 3-glycosylisoxazoles, 5-glycosylisoxazoles and 2-glycosylthiophenes.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/hlca.19750580627
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