Synthesis and biological evaluation of novel pyrazolopyrimidines derivatives as anticancer and anti-5-lipoxygenase agents
作者:Ameur Rahmouni、Sawssen Souiei、Mohamed Amine Belkacem、Anis Romdhane、Jalloul Bouajila、Hichem Ben Jannet
DOI:10.1016/j.bioorg.2016.05.001
日期:2016.6
new esters linked pyrazolo[3,4-d]pyrimidinones hybrids 7a-f. The reaction of compound 2 with 3-propargyl bromide gave the compound 8 used as a dipolarophile to access to triazoles (4- and 5-regioisomers (9a-e) and (10a-e), respectively) via the 1,3-dipoar cycloaddition reaction. Finally, condensation reaction of aminopyrazole 1b with α-cyanocinnamonitiles gave the new pyrazolo[1,5-a]pyrimidine-3,6-dicarbonitriles
通过羧酰胺2与一些化合物的缩合,一步合成了一系列新的6-芳基-3-甲基-1-苯基-1H-吡唑并[3,4-d]嘧啶-4(5H)-酮3a-h。芳香醛(存在碘)。用乙酸酐处理氨基吡唑1a得到吡唑并嘧啶4,在回流的干燥DMF中用氯乙酸乙酯处理后得到吡唑并嘧啶4,得到的单一产物为乙基2-(3,6-二甲基-4-氧代-1-苯基-1H-吡唑并[3, 4-d]嘧啶-5(4H)-基)乙酸盐5。另一方面,化合物6与不同醇的酯化反应导致形成与吡唑并[3,4-d]嘧啶酮杂化物7a-f连接的新酯。 。化合物2与3-炔丙基溴的反应产生了用作双极性亲和剂的化合物8,可通过1,3-二足体获得三唑(分别为4-和5-区域异构体(9a-e)和(10a-e))环加成反应。最后,氨基吡唑1b与α-氰基肉桂腈的缩合反应得到新的吡唑并[1,5-a]嘧啶-3,6-二腈11a-e。基于(1)H /(13)C NMR和ESI-HRMS建立化合