Synthesis of some substituted furo[3,2-g]chromeno[2,3-c]pyrazole and pyrazoline derivatives from 5-hydroxybergapten and 5-hydroxyisopimpinellin as EGFR and VEGFR-2 kinase inhibitors
作者:A. E. Amr、M. M. Abdalla、S. A. Essaouy、M. M. H. Areef、M. H. Elgamal、T. A. Nassear、A. E. Haschich
DOI:10.1134/s1070363217070258
日期:2017.7
derivatives 2 and 3, respectively. Bromination of 1 gave the corresponding 6-bromo analouges 4, that were treated with amino acids esters to give the corresponding 6-N-amino acids analogues 5. Treatment of the later with hydrazine hydrate led to cleavage of the pyran ring and gave the corresponding pyrazoline benzofuran derivatives 6. Formylation of 1 gave aldehyde derivative 7, which was condensed with amino
使用5-羟基合成了一系列取代的7H-呋喃[3,2-g] chromen-7-one和呋喃[3,2-g] chromeno [2,3-c]吡唑衍生物(2-9) -4-甲氧基-7 H-呋喃[3,2- g ] chromen-7-one(5-羟基bergapten)和5-羟基-4,9-二甲氧基-7 H-呋喃[3,2- g ] chromen- -7-酮(5- hydroxyisopimpinellin)(1)作为起始原料。化合物1与氨基酸酯反应,分别得到相应的5 - N-氨基酸衍生物2和3。1的溴化反应产生了相应的6-溴类似物4,用氨基酸酯处理,得到相应的6 - N-氨基酸类似物5。稍后用水合肼处理导致吡喃环断裂,并得到相应的吡唑啉苯并呋喃衍生物6。1的甲酰化生成醛衍生物7,与氨基酸缩合得到相应的5 - N-氨基-6-甲酰基衍生物8。用水合肼将化合物8环化,得到相应的吡唑啉衍生物9。测试所有合成