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Carbon-13 chemical shifts assignment of (E)-styryluracits. (E)-styrylthiouracils and (E)-3-oxothiazolo[3,2-a]-6-styryl-pyrimidin-5-ones

✍ Scribed by Andrzej Łapucha; Elzbieta Wyrzykiewicz

Publisher: John Wiley and Sons
Year: 1987
Tongue: English
Weight: 200 KB
Volume: 25
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1260250516

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✦ Synopsis

The 13C NMR spectra of nine isomeric (€)styryluracils and (€)-styrylthiouracils and those of five (€)-3-oxothiazolo[3,2-a]-6styrylpyrimidin-5-ones have been fully assigned. The A; and A,K empirical parameters of p-and m-hydroxystyryl, p-N,Ndiethylaminostyryl, 5-and 6-vinyl-2.4diketopyrimidyl, 5-and 6-vinyl-2-thio-4ketopyrimidyl and 3-oxothiazolo[3,2-a]-6vinyl-5-ketopyrimidyl groups were calculated for the prediction of the chemical. shifts of substituted (€)-styryluracils and (€) -3 -oxothiazolo[3,2-a]styrylpyrimidin-5ones.

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