📜Tert-Butyl N-[(4-Ethylphenyl)Carbamothioylamino]Carbamate置于盐酸体系中,用 水 作为反应溶剂,化学反应生成 4-(4-乙苯基)-3-氨基硫脲
参考文献:Synthesis And Structure-activity Evaluation Of Isatin-β-Thiosemicarbazones With Improved Selective Activity Toward Multidrug-Resistant Cells Expressing P-Glycoprotein
标题:Synthesis And Structure-activity Evaluation Of Isatin-β-Thiosemicarbazones With Improved Selective Activity Toward Multidrug-Resistant Cells Expressing P-Glycoprotein
摘要:Cancer Multidrug Resistance (Mdr) Mediated By Atp-Binding Cassette (Abc) Transporters Presents A Significant Unresolved Clinical Challenge. One Strategy To Resolve Mdr Is To Develop Compounds That Selectively Kill Cells Overexpressing The Efflux Transporter P-Glycoprotein (Mdr1,P-Gp,Abcb1). We Have Previously Reported Structure-Activity Studies Based Around The Lead Compound Nsc73306 (1,1-Isatin-4-(4'-Methoxyphenyl)-3-Thiosemicarbazone,4.3-Fold Selective). Here We Sought To Extend This Work On Mdr1-Selective Analogues By Establishing Whether 1 Showed "Robust" Activity Against A Range Of Cell Lines Expressing P-Gp. We Further Aimed To Synthesize And Test Analogues With Varied Substitution At The N4-Position,And Substitution Around The N4-Phenyl Ring Of Isatin-Beta-Thiosemicarbazones (Ibts),To Identify Compounds With Increased Mdr1-Selectivity. Compound 1 Demonstrated Mdr1-Selectivity Against All P-Gp-Expressing Cell Lines Examined. This Selectivity Was Reversed By Inhibitors Of P-Gp Atpase Activity. Structural Variation At The 4'-Phenyl Position Of 1 Yielded Compounds Of Greater Mdr1-Selectivity. Two Of These Analogues,1-Isatin-4-(4'-Nitrophenyl)-3-Thiosemicarbazone (22,8.3-Fold Selective) And 1-Isatin-4-(4'-Tert-Butyl Phenyl)-3-Thiosemicarbazone (32,14.8-Fold Selective),Were Selected For Further Testing And Were Found To Retain The Activity Profile Of 1. These Compounds Are The Most Active Ibts Identified To Date.
DOI:10.1021/jm2006047