Antituberculosis Agents and an Inhibitor of the para-Aminobenzoic Acid Biosynthetic Pathway from Hydnocarpus anthelminthica Seeds
作者:Jun-Feng Wang、Huan-Qin Dai、Yu-Ling Wei、Hua-Jie Zhu、Yong-Ming Yan、Yue-Hu Wang、Chun-Lin Long、Hui-Min Zhong、Li-Xin Zhang、Yong-Xian Cheng
DOI:10.1002/cbdv.201000072
日期:2010.8
assays revealed that compounds 1-5 significantly inhibit Mycobacterium tuberculosis (MTB) growth with MIC values of 5.54, 16.70, 4.38, 9.82, and 16.80 microM, respectively. Compound 3 was found to inhibit the pathway between chorismate and para-aminobenzoic acid (pAba) with a MIC value of 11.3 microM, representing a new example of pAba inhibitor isolated from a natural source. All compounds were not toxic
对炭疽棘豆种子的提取物进行的研究导致分离出了三种新化合物,即驱虫药AC(分别为1-3)和两种已知化合物,即甘草酸(4)和甘草酸乙酯(5)。它们的结构主要通过使用光谱技术确定。通过量子计算合理化化合物2的环戊烯基部分的绝对构型。进行碱水解,然后进行旋光比较,可以确定化合物3和5的甘草次酸部分的构型。生物学分析表明,化合物1-5显着抑制了结核分枝杆菌(MTB)的生长,MIC值为5.54、16.70,分别为4.38、9.82和16.80 microM。发现化合物3抑制分支酸和对氨基苯甲酸(pAba)之间的途径,MIC值为11.3 microM,代表了从天然来源分离出的pAba抑制剂的新实例。所有化合物对高达100 microM的白色念珠菌SC5314均无毒。