Synthesis of tetrahetrocyclic systems including pyrido[2′,3′:3,4]pyrazolo[1,5-<i>a</i>]pyrimidine fused with pyrazole derivatives and isolated with 1,3,4-oxa-, thiadiazole, and 1,2,4-tetrazole derivatives
作者:Farag A. El-Essawy
DOI:10.1002/jhet.339
日期:——
A series of isolated and fused tetracyclic compounds, containing pyrido[2′,3′:3,4]pyrazolo[1,5‐a]pyrimidine linked with 1,3,4‐oxa‐, thiadiazole, 1,2,4‐tetrazole, and pyrazole derivatives were prepared by the reaction of 1,8,10‐trimethyl‐4‐oxo‐1,4‐dihydropyrido[2′,3′:3,4]pyrazolo[1,5‐a]pyrimidine‐3‐carboxylate and some common reagents to provide the product in satisfactory yields. J. Heterocyclic Chem
一系列分离并稠合的四环化合物,含有吡啶并[2',3':3,4]吡唑并[1,5- a ]嘧啶并与1,3,4-氧杂-,噻二唑,1,2,4-相连四唑和吡唑衍生物是通过1,8,10-三甲基-4-氧-1、1,4-二氢吡啶并[2',3':3,4]吡唑并[1,5 - a ]嘧啶-3的反应制备的羧酸盐和一些常用试剂,以令人满意的产率提供产品。J.杂环化学。(2010)。