I. Kulakov, Anastasiya A. Karbainova, Z. Shulgau
Dec 4, 2017
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0
Influential Citations
12
Citations
Journal
Chemistry of Heterocyclic Compounds
Abstract
An ester condensation between 3,5-diacetyl-2,6-dimethylpyridine and an excess of diethyl oxalate was used for the preparation of 4,4'(2,6-dimethylpyridine-3,5-diyl)bis(2-hydroxy-4-oxobut-2-enoate). The synthesized hydroxyester was shown to readily react with о-phenylenediamine and о-aminophenol with the formation of bis(3,4-dihydroquinoxalin-2(1H)-one) and bis(3,4-dihydro-2H-1,4benzoxazin-2-one) derivatives, which showed superior in vivo analgesic activity compared to the reference drug, metamizole sodium.