使用两个过渡金属催化反应来合成 m6A RNA 甲基转移酶双底物。我们的方法涉及铜 (I) 催化的炔叠氮碘环加成 (iCuAAC),然后是钯介导的交叉偶联,以获得含有 SAM 类似物 (A SAM ) 的双底物,该类似物与腺苷、二核苷酸或模仿 RNA 底物的五聚体( Asub )。对接研究揭示了三唑接头和酶之间的稳定相互作用。
Total synthesis of the elastin crosslinker (+)-desmopyridine
摘要:
Desmopyridine, isolated from the acid hydrolysates of bovine ligamentum nuchae, is an elastin crosslinker and an amino acid that has a 3,4,5-trisubstituted pyridine skeleton. Herein we report the first total synthesis of (+)-desmopyridine in 10% yield over six steps starting from 4-aminopyridine via chemo- and regioselective palladium-catalyzed Sonogashira and Negishi cross-coupling reactions. (C) 2012 Elsevier Ltd. All rights reserved.
l-Type amino acid transporter 1 activity of 1,2,3-triazolyl analogs of l-histidine and l-tryptophan
作者:Colton Hall、Hannah Wolfe、Alyssa Wells、Huan-Chieh Chien、Claire Colas、Avner Schlessinger、Kathleen M. Giacomini、Allen A. Thomas
DOI:10.1016/j.bmcl.2019.06.033
日期:2019.8
A series of 1,2,3-triazole analogs of the amino acids l-histidine and l-tryptophan were modeled, synthesized and tested for l-type amino acid transporter 1 (LAT1; SLC7A5) activity to guide the design of amino acid-drug conjugates (prodrugs). These triazoles were conveniently prepared by the highly convergent Huisgen 1,3-dipolar cycloaddition (Click Chemistry). Despite comparable predicted binding modes
Facile purification and click labeling with 2-[18F]fluoroethyl azide using solid phase extraction cartridges
作者:Dong Zhou、Wenhua Chu、Xin Peng、Jonathan McConathy、Robert H. Mach、John A. Katzenellenbogen
DOI:10.1016/j.tetlet.2014.10.126
日期:2015.2
A facile method was developed to purify 2-[F-18] fluoroethyl azide ([F-18]FEA) using a C18 cartridge and an Oasis (R) HLB cartridge in series, in which [18FWEA was exclusively trapped on the HLB cartridge. [F-18]]FEA can be eluted for reactions in solution; alternatively click labeling can be carried out on the HLB cartridge itself by loading an alkyne substrate and copper (I) catalyst dissolved in DMF onto the cartridge. This solid phase extraction methodology for purification and click labeling with [F-18]FEA, either in solution or on the cartridge, is safe, simple, reproducible in high yield, and compatible with automated synthesis of 'F-labeled PET tracers. (C) 2014 Elsevier Ltd. All rights reserved.
1H-[1, 2, 3] TRIAZOLE SUBSTITUTED AMINO ACIDS AND USES THEREOF
申请人:Mach Robert H.
公开号:US20100278732A1
公开(公告)日:2010-11-04
Tracers for cationic amino acid transport systems and methods of synthesis are disclosed, including compounds comprising a 1H-[1,2,3]triazole moiety. Further disclosed are uses of the analogues, including in vivo imaging of tumors by Positron emission tomography (PET) or Single Photon Emission Computed Tomography (SPECT).