Synthesis of Novel<i>N</i>-Triazolo Methyl Substituted Fluoroquinolones and Their Antimicrobial Activity
作者:A Ravi Kumar、G. Sathaiah、A. Chandra Shekhar、K. Raju、P. Shanthan Rao、B. Narsaiah、Y. K. Raju、U. S. N. Murthy
DOI:10.1002/jhet.2034
日期:2015.1
strategy was adopted for the preparation of N‐triazolo methyl substituted fluoroquinolones 4 and screened for their antimicrobial activity. The synthetic methodology starts from N‐propargylation of ethyl 7‐chloro‐6‐fluoro‐4‐hydroxyquinoline‐3‐carboxylate (1) followed by reaction with azides through click reaction under Sharpless conditions furnished triazole substituted quinolone ester 3. The latter quinolone
采用了一种优雅的合成策略来制备N-三唑并甲基取代的氟喹诺酮4并对其抗菌活性进行了筛选。合成方法从7-氯-6-氟-4-羟基喹啉3-羧酸乙酯的N-炔丙基化开始(1),然后在Sharpless条件下通过点击反应与叠氮化物反应,得到三唑取代的喹诺酮酯3。后者的喹诺酮酯与各种仲胺反应,得到相应的喹诺酮衍生物4。或者,喹诺酮羧酸衍生物7a,7b,7c,7d由三唑标记的喹诺酮酯分两步制备。针对各种细菌和真菌菌株筛选所有最终产物。化合物4a,4b,4c和4k显示出中等的抗菌活性,而4f显示出对真菌菌株的有希望的活性。