Stereoselective Synthesis, Characterization, and Antibacterial Activities of Novel Isosteviol Derivatives with D-Ring Modification
作者:Ya Wu、Cong-Jun Liu、Xu Liu、Gui-Fu Dai、Jin-Yu Du、Jing-Chao Tao
DOI:10.1002/hlca.201000046
日期:2010.10
Considerable interests have been attracted by isosteviol and its derivatives because of their large variety of bioactivities. In this project, a series of novel 15‐ and 16‐substituted isosteviol derivatives were stereoselectively prepared by means of functional interconversions in ring D of the tetracyclic diterpene isosteviol. All compounds synthesized were characterized by analysis of NMR, IR, HR‐MS
异osteviol及其衍生物因其多种生物活性而引起了极大的兴趣。在该项目中,通过四环二萜异戊二烯醇D环中的功能性相互转化,立体选择性地制备了一系列新型的15和16取代的异雌甾醇。通过NMR,IR,HR-MS数据分析对所有合成的化合物进行表征,并通过X射线晶体学分析确定33和37的构型。研究了这些异osteviol衍生物的体外抗菌活性。该合成的化合物针对更活跃的革兰氏阳性比革兰氏阴性细菌,对枯草芽孢杆菌特别活跃。其中,化合物27(MIC = 1.56μg/ ml)表现出最高的抗菌活性,因此可以用作开发有效抗菌剂的先导化合物。