Microwave-assisted synthesis of 1,3′-diaza-flavanone/flavone and their alkyl derivatives with antimicrobial activity
作者:Nuran Kahriman、Nagihan Yilmaz Iskender、Murat Yücel、Nurettin Yayli、Emine Demir、Zihni Demirbağ
DOI:10.1002/jhet.800
日期:2012.1
not effective, as were the ones alkylated with five or six C alkyl groups (2a and 2b) and 8–13 C alkyl groups for N,N′‐dialkyl compounds (3c–3i). The antimicrobial activity increased as the length of the alkyl substitution increased from 8 to 12 carbons in compounds 2a–j. However, antimicrobial activity decreased as the length of the alkyl substitution increased from 7 to 13 carbons in compounds 3c–i
一种简单的环保固相微波辅助方法通过环化2'-氨基(E)-3'来合成1,3'-二氮杂黄酮(2)和1,3'-二氮杂黄酮(3)。az金刚烷(1)。由化合物2与相应的烷基卤化物在乙腈中回流制备十个新的N-烷基(C 5-12,14,15)-取代的1,3'-二氮杂黄烷溴化铵(2a-j)。此外,还从化合物3合成了九个新的N,N'-二烷基(C 5-12,14)-取代的1,3'-二氮杂黄酮溴化物(3a-i)。用碱性二氧化硅在乙腈中与相应的烷基卤化物反应。化合物的抗微生物活性1-3,2a-j中,和图3a-i的均对革兰氏阳性(G +)测试(枯草芽孢杆菌,表皮葡萄球菌,金黄色葡萄球菌,和粪肠球菌)和革兰氏阴性(G-)(大肠埃希氏大肠杆菌,肺炎克雷伯菌,铜绿假单胞菌,变形杆菌,鼠伤寒沙门氏菌,假结核耶尔森氏菌和阴沟肠杆菌)微生物。在大多数情况下,它们显示出对革兰氏阳性细菌的良好抗菌活性,最小抑菌浓度值低于7.8μg/