Substituted pyridopyrimidinones. Part 5.
β
Mohamed Abass; Mostafa M. Ismail; Wafaa R. Abdel-Monem; Aisha S. Mayas
π
Article
π
2010
π
Versita
π
English
β 491 KB
## Abstract Reactivity of 2-hydroxy-4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carbaldehyde (I) towards N- and C-nucleophiles was described. A series of new enaminones IIβIII, Schiffβs base IV, and hydrazinomethylenediketones VβVIII and X were prepared in good yields. Cyclization of compounds X was achieve