114142-95-9Relevant academic research and scientific papers
Studies on pyrimidine-annelated heterocycles: Synthesis of novel pyrazolo[3′,4′:4,5]pyrido[2,3-d]pyrimidines by intramolecular 1,3-dipolar cycloadditions
Baruah, Bipul,Prajapati, Dipak,Sandhu, Jagir S.,Ghosh, Anil C.
, p. 1999 - 2003 (2007/10/03)
Suitably functionalised 1,3-substituted 6-chloro-1,2,3,4-tetrahydro-2,4-dioxopyrimidine-5-carbaldehydes 3a-l cyclise intramolecularly to yield novel furo- and thieno-[2″,3″:4′,5′]pyrazolo[3′,4′:4,5] pyrido-[2,3-d]pyrimidines 8a-l in fair to good yields to
Studies of Pyrimidine-2,4-diones: Synthesis of Novel Condensed Pyridopyrimidines via Intramolecular Cycloadditions
Prajapati, Dipak,Bhuyan, Pulakjyoti,Sandhu, Jagir Singh
, p. 607 - 610 (2007/10/02)
Suitably functionalised pyrimidine-2,4-diones (1) cyclised intramolecularly to yield the novel furoisoxazolopyridopyrimidines (5) and (9) in excellent yields.Remarkably, the pyrimidone nucleus was unaffected nor were there any side-reactions in this synthesis.
