从2,4-二氯嘧啶开始,可通过五步反应序列获得4-(2-二烷基氨基)嘧啶基官能化的间苯二甲酰氯。已经找到了导致这些配体衍生的钯NHC配合物的两种途径:通过与相应的NHC-AgCl配合物进行重金属化,可以获得C,N配位的钯(II)配合物。在吡啶中和在K 2 CO 3存在下用咪唑鎓盐处理二氯化钯生成环金属化的化合物,从而得到C,C配位的化合物。详细研究了所有这些化合物的反应性及其在Suzuki-Miyaura催化交叉偶联反应中的性能。结果表明,C,C配位的衍生物在芳基硼酸与芳基氯的偶联中表现出高催化活性,这与普遍接受的底物活化机理相一致。
从2,4-二氯嘧啶开始,可通过五步反应序列获得4-(2-二烷基氨基)嘧啶基官能化的间苯二甲酰氯。已经找到了导致这些配体衍生的钯NHC配合物的两种途径:通过与相应的NHC-AgCl配合物进行重金属化,可以获得C,N配位的钯(II)配合物。在吡啶中和在K 2 CO 3存在下用咪唑鎓盐处理二氯化钯生成环金属化的化合物,从而得到C,C配位的化合物。详细研究了所有这些化合物的反应性及其在Suzuki-Miyaura催化交叉偶联反应中的性能。结果表明,C,C配位的衍生物在芳基硼酸与芳基氯的偶联中表现出高催化活性,这与普遍接受的底物活化机理相一致。
Pyrimidinyl Biphenylureas: Identification of New Lead Compounds as Allosteric Modulators of the Cannabinoid Receptor CB<sub>1</sub>
作者:Leepakshi Khurana、Bo-Qiao Fu、Anantha L. Duddupudi、Yu-Hsien Liao、Sri Sujana Immadi、Debra A. Kendall、Dai Lu
DOI:10.1021/acs.jmedchem.6b01448
日期:2017.2.9
cannabinoid receptor 1 (CB1) and antagonized G protein coupling. This compound demonstrated potent anorectic effects similar to the CB1 antagonist rimonabant that once was marketed for the treatment of obesity, suggesting a new chemical entity for the discovery of antiobesity drugs. To increase structural diversity of this class of CB1 ligands, we designed and synthesized two classes of novel analogues
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.
Neue 9-(Omega-heteroarylamino-alkylamino)-erythromycine, ihre Salze, Verfahren zu ihrer Herstellung und diese Verbindungen enthaltende Arzneimittel