Heterocycles of biological importance. Part 1. Novel synthesis and biological activity study of 5-Alkyl and 5-Aryl-7-aminopyrazolo[1,5-<i>a</i>]-pyrimidines from allenic or acetylenic nitriles and 3-aminopyrazole
作者:Z. Tanee Fomum、P. Forche Asobo、P. Ngozi Ifeadike
DOI:10.1002/jhet.5570210439
日期:1984.7
Allenic nitriles react with 3-aminopyrazole in ethanol or dimethylformamide to give 5-alkyl-7-aminopyrazolo[1,5-a]pyrimidines 5 of pharmaceutical interest in good yields. 3-Phenylpropynenitrile reacts with 3-aminopyrazole in a similar manner to give the aryl compound 8.
烯丙基腈与3-氨基吡唑在乙醇或二甲基甲酰胺中反应,以高收率得到具有药用价值的5-烷基-7-氨基吡唑并[1,5- a ]嘧啶5。3-苯基丙腈与3-氨基吡唑以类似方式反应,得到芳基化合物8。