Sulfonyl Fluoride Inhibitors of Fatty Acid Amide Hydrolase
摘要:
Sulfonyl fluorides are known to inhibit esterases. Early work, from our laboratory has identified hexadecyl sulfonylfluoride (AM374) as a potent in vitro and in vivo inhibitor of fatty acid amide hydrolase (FAAH). We now report on later generation sulfonyl fluoride analogs that exhibit potent and selective inhibition of FAAH. Using recombinant rat and human FAAH, we show that 5-(4-hydroxyphenyl)pentanesulfonyl fluoride (AM3506) has similar inhibitory activity for both the rat and the human enzyme, while dilution assays and mass spectrometry analysis suggest that the compound is a covalent modifier for FAAH and inhibits its action in an irreversible manner. Our SAR results are highlighted by molecular docking of key analogs.
Trisubstituted pyridine leukotriene B4 receptor antagonists: synthesis and structure-activity relationships
作者:Robert A. Daines、Pamela A. Chambers、Israil Pendrak、Dalia R. Jakas、Henry M. Sarau、James J. Foley、Dulcie B. Schmidt、William D. Kingsbury
DOI:10.1021/jm00074a013
日期:1993.10
A series of trisubstituted pyridines have been prepared that exhibit in vitro leukotriene B4 (LTB4, 1) receptor antagonist activity. Previous disubstituted pyridines from these labs showed high affinity for the LTB4 receptor but demonstrated agonist activity in functional assays (e.g., 2, Ki = 1 nM). Compound 4, the initial lead compound of this new series, showed only modest affinity by comparison
Facile Access to AgOCF<sub>3</sub>and Its New Applications as a Reservoir for OCF<sub>2</sub>for the Direct Synthesis of N−CF<sub>3</sub>, Aryl or Alkyl Carbamoyl Fluorides
showcase its performance in trifluoromethoxylations or as reservoir for O=CF2. This enabled the direct, practical and safe synthesis of valuable N‐alkyl/aryl and N−CF3 carbamoyl fluorides from secondary amines and isothiocyanides, respectively. Our mechanistic data indicate that AgOCF3 does not liberate O=CF2 until it is activated by a nucleophilic co‐reagent, reinforcing the stability of the salt under
Design and synthesis of a new orthogonally protected glutamic acid analog and its use in the preparation of high affinity polo-like kinase 1 polo-box domain – binding peptide macrocycles
作者:David Hymel、Kohei Tsuji、Robert A. Grant、Ramesh M. Chingle、Dominique L. Kunciw、Michael B. Yaffe、Terrence R. Burke
DOI:10.1039/d1ob01120k
日期:——
phospho-dependent PPIs, such as the polo-like kinase 1 (Plk1) polo-box domain (PBD), a phosphorylated protein residue can provide high-affinity recognition and binding to target protein hot spots. Developing antagonists of the Plk1 PBD can be particularly challenging if one relies solely on interactions within and proximal to the phospho-binding pocket. Fortunately, the affinity of phospho-dependent PPI antagonists
靶向蛋白质-蛋白质相互作用(PPI)已成为抗癌治疗开发的一个重要发现领域。对于磷酸依赖性 PPI,例如 polo 样激酶 1 (Plk1) polo-box 结构域 (PBD),磷酸化蛋白残基可以提供高亲和力识别并与目标蛋白热点结合。如果仅依赖于磷酸结合袋内部及其附近的相互作用,那么开发 Plk1 PBD 拮抗剂可能会特别具有挑战性。幸运的是,通过利用磷酸结合位点和配体结合时可能揭示的隐藏“神秘”口袋中的相互作用,可以显着增强磷酸依赖性 PPI 拮抗剂的亲和力。在我们当前的论文中,我们描述了针对 Plk1 PBD 的大环肽模拟物的设计和合成,其特征是一种新的谷氨酸类似物,同时充当闭环连接,提供对神秘结合袋的访问,同时在同时实现磷酸苏氨酸 (pT) 残基的正确定向,以在标志性磷酸结合袋中实现最佳相互作用。用这种新的氨基酸类似物制备的大环化合物引入了开链线性母肽中未发现的额外氢键相互作用。值得
One-pot, one- and multi-carbon homologation of alkyl halides; reaction of grignard reagents with chloroiodomethane
作者:Roger C. Hahn、Jan Tompkins
DOI:10.1016/s0040-4039(00)94397-1
日期:——
Reaction of a Grignardreagent (RMgX) with chloroiodomethane affords the corresponding iodide (RI) and, depending on R, solvent, and temperature, iodides which are one-carbon and multicarbon homologs of RX. Allyl iodide but not allyl bromide can be monohomologated by the combined action of chloroiodomethane and isopropyl Grignard.
Microwave-Assisted Alkylations of Activated Methylene Groups
作者:Rudolph A. Abramovitch、Quing Shi、Dariusz Bogdal
DOI:10.1080/00397919508010781
日期:1995.1
Abstract Alkylations under ‘dry conditions’ of nitrophenylacetates, of an indole, and of methyl benzylidene glycinate induced by microwaves have been studied, leading to a very simple synthesis of arenes linked by a long hydrocarbon chain. N-Alkylation of the indole occurs, and monoalkylated methyl benzylideneglycinate is obtained, but in poor yield.