FACILE SYNTHESIS OF BIOLOGICALLY ACTIVE LINEAR BISAROYL BENZODIFURANS BY PTC AND SOLVENT FREE MICROWAVE IRRADIATION
作者:K. S. Krishna Murthy、B. Rajitha、M. Kanakalingeswara Rao、T. Raja Komuraiah、S. M. Reddy
DOI:10.1515/hc.2002.8.2.179
日期:2002.1
(Or) (i i) K 2 C O J / M W 3 0 0 / 1 3 min -X Ar 4-H C6H4 4-CI C6H4 4-Ph C6H4 2-OMe O C T 4-NO, C6H, 4-Me C6H, 4-OMe C6H, 3 a-e 4 a-g 5 a-g [R=CHJ] [R=C2H.J [R=C6H5] Scheme 1 The benzodifurans were characterized by UV, IR, NMR and Mass spectral data (Table 1). The UV spectra of all the compounds have displayed two absorption bands in the regions λTM, 322327 and 355-359 nm as compared with unsubstituted
2,6-二芳酰基/萘酰基-3,5-二烷基/苯基-苯并[l,2-b;5,4-b']二呋喃(3a-e、4a-g和5a-g)已通过缩合合成4,6-二酰基/二芳酰基间苯二酚 (1 i-iii) 与各种 p-取代的 a 溴酮 (2a-g) 通过 (a) 相转移催化方法和 (b) 微波辐射。对这两种方法进行了比较。已发现微波辐射是合成双芳酰基苯并二呋喃的有效途径。所有化合物都经过了抗菌筛选(3a-e、4a-g 和 5b-g),一些选定的化合物已经过抗植入活性测试。苯并二呋喃 3c、3d、3e、4a、4b、4d、4f 和 5g 对革兰氏阳性菌显示出优异的活性,化合物 4c 在 10 mg/Kg/大鼠/天对白化大鼠显示出 67% 的抗植入活性。介绍 已知天然和合成的苯并呋喃衍生物与生物和药理活性有关。Methyl-2-methyl-5-hydroxy-6-acetyl-benzofuran-3carboxylate