Studies on the Reactivity of Amino-1-(6-phenyl-pyridazin-3-yl)-1<i>H</i>-pyrazole-4-carboxylic Acid Hydrazide Towards Some Reagents for Biological Evaluation
作者:Ahmed H. Shamroukh、Aymn E. Rashad、Hatem S. Ali、Samir M. Awad
DOI:10.1002/jhet.1724
日期:2014.7
5‐amino‐1‐(6‐phenyl‐pyridazin‐3‐yl)‐1H‐pyrazole‐4‐carboxylic acid ethyl ester (2) was formed using (6‐phenyl‐pyridazin‐3‐yl)‐hydrazine (1) and ethyl(ethoxymethylene)cyanoacetate. The β‐enaminoester derivative 2 was in turn used as precursor for the preparation of 1‐(6‐phenyl‐pyridazin‐3‐yl)‐pyrazoles (3, 4, 7, 8, 9, 10, 11, 12, 15, 16), 1‐(6‐phenyl‐pyridazin‐3‐yl)‐pyrazolo[3,4‐d]pyrimidines (5, 6, 14) and 1‐(
使用(6-苯基-哒嗪-3-基)肼形成了新颖的5-氨基-1-(6-苯基哒嗪-3-基)-1 H-吡唑-4-羧酸乙酯(2)(1)和(乙氧基亚甲基)氰基乙酸乙酯。β型enaminoester衍生物2被依次用作前体用于制备1-(6-苯基-哒嗪-3-基)-pyrazoles(3,4,7,8,9,10,11,12,15,16),1-(6-苯基-哒嗪-3-基) -吡唑并[3,4- d ]嘧啶(5,6,14)和1-(6-苯基-哒嗪-3-基)-吡唑并[3,4- d ] [1,2,3]三嗪(13)。在体外合成的化合物的抗微生物活性通过测定抑制区的直径,其中它们中的一些与公知的药物(标准)相比,表现出有效的抗微生物活性进行评价。