Antimicrobial and antiquorum-sensing activity of<i>Ricinus communis</i>extracts and ricinine derivatives
作者:Mai H. El-Naggar、Abdelaziz Elgaml、Fatma M. Abdel Bar、Farid A. Badria
DOI:10.1080/14786419.2017.1423306
日期:2019.6.3
communis plant, was used as a starting compound for the synthesis of six ricinine derivatives; two new and four known compounds. The new derivatives; 3-amino-5-methyl-1H-pyrazolo[4,3-c]pyridin-4(5H)-one (2), and 3-amino-5-methyl-1-(phenylsulfonyl)-1H-pyrazolo[4,3-c]pyridin-4(5H)-one (3), as well as the previously prepared derivatives (4–7) were subjected for antimicrobial and antiquorum-sensing evaluation
蓖麻碱(1)是蓖麻(Ricinus communis)植物中已知的主要生物碱,被用作合成六种蓖麻碱衍生物的起始化合物。两个新化合物和四个已知化合物。新的衍生产品;3-氨基-5-甲基- 1 H ^ -吡唑并[4,3-c]吡啶-4(5 ħ) -酮(2),和3-氨基-5-甲基-1-(苯基磺酰基)-1 ħ -吡唑并[4,3-c]吡啶-4(5 ħ) -酮(3),以及先前制备的衍生物(4 - 7)相比进行了抗微生物和安帝传感评价不同蓖麻提取物。乙酰蓖麻酸衍生物(5)在所有测试的金黄色葡萄球菌,大肠杆菌,肺炎克雷伯菌,铜绿假单胞菌和白色念珠菌衍生物中表现出最高的抗菌活性。然而,在所有测试的化合物和提取物中,化合物7(4-甲氧基-1-甲基-2-氧代-1,2-二氢吡啶-3-羧酰胺)显示出最高的抗群体感应活性。这些发现证明了蓖麻碱作为合成新的抗微生物和抗群体感应衍生物的良好支架的有用性,尽管其对植物提取物的抗微生物活性贡献不大。