Molecular hybridization of bioactives: Synthesis and antitubercular evaluation of novel dibenzofuran embodied homoisoflavonoids via Baylis–Hillman reaction
作者:Thirumal Yempala、Darmarajan Sriram、Perumal Yogeeswari、Srinivas Kantevari
DOI:10.1016/j.bmcl.2012.10.056
日期:2012.12
natural product like dibenzofuran embodied homoisoflavonoids [(E)-3-(dibenzo[b,d]furan-2-ylmethylene)chroman-4-ones] designed by molecular hybridization were synthesized in very good yields via a sequence of reactions involving base catalyzed Baylis–Hillmann (BH) reaction of 2-dibenzofuran carboxaldehyde and methyl acrylate; bromination of BH adduct; condensation of resulted allylic bromide with substituted
通过分子杂交设计合成了一系列新颖的天然产物,如二苯并呋喃,其包含通过分子杂交设计的高异黄酮类化合物[(E)-3-(二苯并[ b,d ]呋喃-2-基亚甲基)chroman-4-ones]。涉及碱催化的2-二苯并呋喃甲醛和丙烯酸甲酯的Baylis-Hillmann(BH)反应;BH加合物的溴化;将所得的烯丙基溴与取代的酚或2-二苯并呋喃醇缩合,然后环化。在筛选出的针对结核分枝杆菌H37Rv(MTB),(E)-3-(dibenzo [ b,d分别是]呋喃-2-基亚甲基)-6-氟苯并吡喃-4-酮(7f)和(E)-3-(二苯并[ b,d ]呋喃-2-基亚甲基)-6-氟苯并吡喃-4-酮(7g)被发现具有MIC 12.5μg/ mL的活性。