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.
binding potential of agonistic VP structures was abolished by the introduction of an azido or a nitro group into the aromatic side chain at position 3. Cyclo desamino-beta,beta-dialkyl-Cys1-type VP antagonist structures were prepared with the photoactivable moiety in position 2 and an iodination residue in position 9. One particular compound, [Dmpa1, Phe(N3)2, Val4, Lys8,D-Tyr9]VP (8), containing beta
肽激素加压素(VP)的几种潜在的光亲和性类似物是通过经典的固相肽合成方法,使用两种不同的途径制备的。通过在光标记位置引入(a)Nar保护的氨基苯丙氨酸或(b)硝基苯丙氨酸来构建肽序列。裂解后和纯化前,在途径a中完成了向叠氮基肽的转化,在途径b中,由少量纯化的含硝基苯丙氨酸的前体肽完成了转化。使用从大鼠肝细胞制备的膜测量V1受体结合特性。通过将叠氮基或硝基基团引入位置3的芳族侧链,可以消除激动剂VP结构的结合潜力。制备了β-二烷基-Cys1型VP拮抗剂结构,该结构的光活化部分位于位置2,碘化残基位于位置9。一种特定的化合物[Dmpa1,Phe(N3)2,Val4,Lys8,D-Tyr9] VP( 8),在位置1包含β,β-二甲基-β-巯基丙酸,在放射性碘化(Kd = 4.8 +/- 1.9 x 10(-10)M)和非碘化形式(Kd = 6.4)上均具有优异的结合性能+/- 0.98 x 10
[EN] HYDROGELS BASED ON FUNCTIONALIZED POLYSACCHARIDES<br/>[FR] HYDROGELS À BASE DE POLYSACCHARIDES FONCTIONNALISÉS
申请人:ECOLE POLYTECHNIQUE FED LAUSANNE EPFL
公开号:WO2018050764A1
公开(公告)日:2018-03-22
The present invention relates to functionalized hydrogel networks grafted with at least one moiety for use in numerous fields, from cosmetics to surgery and medicine.
本发明涉及功能化水凝胶网络,其搭接有至少一种官能团,可用于诸多领域,从化妆品到外科和医学。
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.