Design and Synthesis of (<i>E</i>)-4-(2-Phenyl-2<i>H</i>-chromen-3-yl)but-3-en-2-ones and Evaluation of their <i>In Vitro</i> Antimicrobial Activity
作者:Sabita Nayak、Subhendu Chakroborty、Sujitlal Bhakta、Pravati Panda、Seetaram Mohapatra、Sanjeet Kumar、Padan Jena、Chandrasekhar Purohit
DOI:10.2174/1570178612666150331204016
日期:2015.5.9
2H-Chromene and its derivatives are an important class of organic compounds due to their
wide range of biological activities such as antimicrobial, antiviral, antiimflamatory and antitubercular
agents. In the present work we have synthesized ten new 2H-chromene derivatives [(E)-4-(2-phenyl-
2H-chromen-3-yl)but-3-en-2-one and its substituted analogues] following aldol condensation of 2Hchromene-
3-carbaldehydes with acetone. These products have been characterized by means of spectral
data (1H, 13C, IR, Mass). The structure of one new compound (E)-4-(6,8-dichloro-2-phenyl-2H-chromen-3-yl)but-3-en-2-
one was confirmed by X-ray analysis and the product was subsequently subjected to the in vitro evaluation of antimicrobial
activity against two Gram positive bacteria Streptococcus mutans (MTCC 497) and Streptococcus pyogenes (MTCC
1926) and three Gram negative bacteria Vibrio cholera (MTCC 3909), Shigella flexneri (MTCC 1457) and Salmonella enteric
typhi (MTCC 1252). The obtained results from in vitro antimicrobial assays by broth dilution method indicated that
many compounds under study exhibited excellent activity against all the microorganisms in comparison to standard kanamycin.
2H-香烯及其衍生物是一类重要的有机化合物,因为它们具有广泛的生物活性,如抗微生物、抗病毒、抗炎和抗结核作用。在本研究中,我们合成了十种新的2H-香烯衍生物[(E)-4-(2-苯基-2H-香烯-3-基)丁-3-烯-2-酮及其取代类似物],该过程通过将2H-香烯-3-醛与丙酮进行醇脱水缩合反应而得到。这些产物通过光谱数据(1H、13C、红外、质谱)进行了表征。通过X射线分析确认了一种新化合物(E)-4-(6,8-二氯-2-苯基-2H-香烯-3-基)丁-3-烯-2-酮的结构,随后该产物进行了体外抗微生物活性评估,针对两种革兰氏阳性细菌链球菌变种(MTCC 497)和化脓性链球菌(MTCC 1926),以及三种革兰氏阴性细菌霍乱弧菌(MTCC 3909)、志贺氏菌(MTCC 1457)和沙门氏菌(MTCC 1252)。通过肉汤稀释法进行的体外抗微生物实验结果表明,许多研究中的化合物与标准卡那霉素相比,对所有微生物表现出优良的活性。