Synthesis of Novel Dipyrazolopyrimidine Fused Heterotricyclic Compounds

Novel fused heterotricyclic compounds 3–6 containing two different dipyrazolopyrimidine framework were prepared from 1a–1d. The reaction of 1 with K2CO3 in DMSO or NaH in DMF led to the formation of 2 or 3, respectively, which reacted further to afford 6 or 5, respectively

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Bibliographic Details
Published in:Chinese journal of chemistry 2005-02, Vol.23 (2), p.182-184
Main Authors: Ying, Liu, Xiao-Hong, Zhang, Gui-Yu, Jin
Format: Article
Language:English
Subjects:
1H-dipyrazolo
1H-pyrazole-4-carboxamide
1H‐dipyrazolo[1,5‐α: 3′,4′‐d]pyrimidine‐4(9H)‐one
1H‐dipyrazolo[1,5‐α: 4′,3′‐e]pyrimidine‐4(5H)‐one
3′-e]pyrimidine-4(5H)-one
4′-d]pyrimidine-4(9H)-one
5-α: 3
5-α: 4
synthesis
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Summary:Novel fused heterotricyclic compounds 3–6 containing two different dipyrazolopyrimidine framework were prepared from 1a–1d. The reaction of 1 with K2CO3 in DMSO or NaH in DMF led to the formation of 2 or 3, respectively, which reacted further to afford 6 or 5, respectively
ISSN:1001-604X
1614-7065
DOI:10.1002/cjoc.200590182