Development of a Tripeptide Mimetic Strategy for the Inhibition of Protein Farnesyltransferase
摘要:
This paper describes the development of a novel terphenyl-based tripeptide mimetic of the CAAX carboxy terminal sequence of Ras. We employ a concise synthesis to form a series of differently functionalized terphenyl inhibitors of protein farnesyltransferase (PFTase), exemplified by 5, 6 and 7. The key reaction in the synthesis of the terphenyl methyl ester 13, and therefore 6 and 7, was the Pd-catalyzed chemoselective Suzuki cross-coupling of 3-bromo-4-chloronitrobenzene 16 with an appropriate boronic acid derivative utilizing a commercially available, electron rich phosphine Ligand. We further show that one member of this series is a potent inhibitor of PFTase. (C) 2000 Elsevier Science Ltd. All rights reserved.
通过钯(0)催化的三重多米诺工艺开发了一种高效,高度区域选择性和立体选择性的合成四取代烯烃的方案。它涉及通过双碳钯和通过2-降冰片芳基炔基联芳基/杂芳基与降冰片烯的双碳键合和CH活化形成三个新的CC键。该方法实际上很简单,具有广泛的底物范围,并且可以耐受各种取代基。带有9 H-吡咯并[1,2- a ]吲哚基序的产物显示出令人感兴趣的固态荧光特性,因此形成了一类新的聚集诱导发射(AIE)荧光团。
Palladium-Catalyzed Synthesis of Tetrasubstituted Olefins by Triple Domino Process
作者:Kanagaraj Naveen、Savariyappan Albert Nikson、Paramasivan Thirumalai Perumal
DOI:10.1002/adsc.201700169
日期:2017.7.17
An efficient, highly regio‐ and stereoselective protocol for the synthesis of tetrasubstituted olefins was developed to take place by a palladium(0)‐catalyzed triple domino process. It involves the formation of three new C−C bonds through double carbopalladation and C−H activation across 2‐bromoaryl alkynyl biaryls/heteroaryls with norbornene. This method is practically simple with broad substrate
通过钯(0)催化的三重多米诺工艺开发了一种高效,高度区域选择性和立体选择性的合成四取代烯烃的方案。它涉及通过双碳钯和通过2-降冰片芳基炔基联芳基/杂芳基与降冰片烯的双碳键合和CH活化形成三个新的CC键。该方法实际上很简单,具有广泛的底物范围,并且可以耐受各种取代基。带有9 H-吡咯并[1,2- a ]吲哚基序的产物显示出令人感兴趣的固态荧光特性,因此形成了一类新的聚集诱导发射(AIE)荧光团。
Synthesis and structural characterization of nitro-functionalized cyclic hypervalent iodine compounds
作者:Guobi Li、Arnold L. Rheingold、John D. Protasiewicz
DOI:10.1016/j.poly.2022.115988
日期:2022.9
Hypervalent iodine (HVI) compounds feature electron deficient iodine centers that often establish significant intermolecular interactions with oxygen atoms from neighboring molecules (I⋯O) in the solid state. This report examines the impact of the introduction of nitro (–NO2) groups on the solid state aggregation of two common types of cyclic HVI compounds, diaryliodonium (DAI) salts, and bisdiaryliodoniuim
Intramolecular Remote C–H Activation via Sequential 1,4-Palladium Migration To Access Fused Polycycles
作者:Panpan Li、Qiuyu Li、He Weng、Jiaming Diao、Hequan Yao、Aijun Lin
DOI:10.1021/acs.orglett.9b02392
日期:2019.9.6
conveyor has been described. This reaction provides an efficient route to construct diverse polycyclic frameworks in moderate to good yield via palladium-catalyzed remote C-H activation/alkene insertion, arylation, alkenylation, and the Heck reaction. The preliminary mechanistic studies revealed that the 1,4-palladium migration process was reversible.
Development of a Tripeptide Mimetic Strategy for the Inhibition of Protein Farnesyltransferase
作者:Mohit A. Kotharé、Junko Ohkanda、Jeffrey W. Lockman、Yimin Qian、Michelle A. Blaskovich、Said M. Sebti、Andrew D. Hamilton
DOI:10.1016/s0040-4020(00)00890-5
日期:2000.12
This paper describes the development of a novel terphenyl-based tripeptide mimetic of the CAAX carboxy terminal sequence of Ras. We employ a concise synthesis to form a series of differently functionalized terphenyl inhibitors of protein farnesyltransferase (PFTase), exemplified by 5, 6 and 7. The key reaction in the synthesis of the terphenyl methyl ester 13, and therefore 6 and 7, was the Pd-catalyzed chemoselective Suzuki cross-coupling of 3-bromo-4-chloronitrobenzene 16 with an appropriate boronic acid derivative utilizing a commercially available, electron rich phosphine Ligand. We further show that one member of this series is a potent inhibitor of PFTase. (C) 2000 Elsevier Science Ltd. All rights reserved.