Protecting-Group-Free Synthesis of Meridianin A–G and Derivatives and Its Antibiofilm Evaluation
作者:Huidan Geng、Fei Chen、Yonglong Zhao、Bing Guo、Lei Tang、Yuan-Yong Yang
DOI:10.1021/acs.joc.2c02837
日期:2023.3.17
Herein, a protecting-group-free protocol was developed to realize a time and step economy diversification of the Meridianin alkaloid. A broad range of substituents are tolerated to deliver the products in moderate to high yields, and the first synthesis of Meridianin B was achieved. The simplicity of this protocol enables the rapid construction of a Meridianin derivative library for antibiofilm evaluation
在此,开发了一种无保护基团的方案,以实现 Meridianin 生物碱的时间和步骤经济多样化。广泛的取代基可以以中等到高的产率提供产品,并且实现了 Meridianin B 的首次合成。该协议的简单性使得能够快速构建用于抗生物膜评估的 Meridianin 衍生物库。初步结果表明,经络宁衍生物能够协同抑制鲍曼不动杆菌生物膜并降低抗生素 MIC。
CNS and antimalarial activity of synthetic meridianin and psammopemmin analogs
作者:Matthew D. Lebar、Kristopher N. Hahn、Tina Mutka、Patrick Maignan、James B. McClintock、Charles D. Amsler、Alberto van Olphen、Dennis E. Kyle、Bill J. Baker
DOI:10.1016/j.bmc.2011.08.033
日期:2011.10
The marine invertebrate-derived meridianin A. the originally proposed structure for psammopemmin A. and several related 3-pyrimidylindole analogs were synthesized and subsequently investigated for central nervous system, antimalarial, and cytotoxic activity. A Suzuki coupling of an indoleborate ester to the pyrimidine electrophile was utilized to form the natural product and derivatives thereof. The 3-pyrimidineindoles were found to prevent radioligand binding to several CNS receptors and transporters, most notably, serotonin receptors (<0.2 mu M K-i for 5HT(2B)). Two compounds also inhibited the human malaria parasite Plasmodium falciparum (IC50 <50 mu M). Only the natural product was cytotoxic toward A549 cells (IC50 = 15 mu M). (C) 2011 Elsevier Ltd. All rights reserved.