Synthesis of thiophene-2-carboxamidines containing 2-amino-thiazoles and their biological evaluation as urokinase inhibitors
摘要:
The serine protease urokinase (uPa) has been implicated in the progression of both breast and prostate cancer. Utilizing structure based design, the synthesis of a series of substituted 4-[2-amino- 1,3-thiazolyl]-thiophene-2-carboxamidine is described. Further optimization of this series by substitution of the terminal amine yielded urokinase inhibitors with excellent activities. (C) 2001 Elsevier Science Ltd. All rights reserved.
作者:Jefferson W. Tilley、Paul Levitan、Richard W. Kierstead、Michael Cohen
DOI:10.1021/jm00186a019
日期:1980.12
Structure-activity studies were carried out on a series of antihypertensive 1-(2-aminoethyl)-3-(substituted phenyl)thioureas. From this class of compounds, the 2,6-dichlorophenyl analogue 2 was found to have potent oral antihypertensive activity in two hypertensive rat models and the renal hypertensive dog. In addition to its effect on blood pressure, 2 displayed sedative effects which had a marked species specificity.
2-Amino-4<i>H</i>-3,1-benzoxazin-4-ones as Inhibitors of C1r Serine Protease
作者:Sheryl J. Hays、Bradley W. Caprathe、John L. Gilmore、Nilam Amin、Mark R. Emmerling、Walter Michael、Ravi Nadimpalli、Rathna Nath、Kadee J. Raser、Daniel Stafford、Desiree Watson、Kevin Wang、Juan C. Jaen
DOI:10.1021/jm970394d
日期:1998.3.1
A series of 2-amino-4H-3,1-benzoxazin-4-ones have been synthesized and evaluated as inhibitors of the complement enzyme C1r. C1r is a serine protease at the beginning of the complement cascade, and complement activation by beta-amyloid may represent a major contributing pathway to the neuropathology of Alzheimer's disease. Compounds such as 7-chloro-2-[(2-iodophenyl)amino]benz[d][1,3]oxazin-4-one (32) and 7-methyl-2-[(2-iodophenyl)amino]benz[d] 4-one (37) show improved potency compared to the reference compound FUT-175. Many of these active compounds also possess increased selectivity for C1r compared to trypsin and enhanced hydrolytic stability relative to 2-(2-iodophenyl)-4H-3,1-benzoxazin-4-one (1).
A novel aromatic alkylation of anilines with cyclic and acyclic ketones under hydrothermal conditions
作者:Barun K. Mehta、Koji Kumamoto、Kazumichi Yanagisawa、Hiyoshizo Kotsuki
DOI:10.1016/j.tetlet.2005.07.165
日期:2005.10
A novel aromatic ring-alkylation was achieved by condensation between aniline(.)HCI salts and cyclic or acyclic ketones under hydrothermal conditions. (c) 2005 Elsevier Ltd. All rights reserved.
Synthesis of thiophene-2-carboxamidines containing 2-amino-thiazoles and their biological evaluation as urokinase inhibitors
作者:Kenneth J. Wilson、Carl R. Illig、Nalin Subasinghe、James B. Hoffman、M. Jonathan Rudolph、Richard Soll、Christopher J. Molloy、Roger Bone、David Green、Troy Randall、Marie Zhang、Frank A. Lewandowski、Zhao Zhou、Celia Sharp、Diane Maguire、Bruce Grasberger、Renee L. DesJarlais、John Spurlino
DOI:10.1016/s0960-894x(01)00102-0
日期:2001.4
The serine protease urokinase (uPa) has been implicated in the progression of both breast and prostate cancer. Utilizing structure based design, the synthesis of a series of substituted 4-[2-amino- 1,3-thiazolyl]-thiophene-2-carboxamidine is described. Further optimization of this series by substitution of the terminal amine yielded urokinase inhibitors with excellent activities. (C) 2001 Elsevier Science Ltd. All rights reserved.
Preparation of bis and tris(arylimido) complexes of rhenium(VII), including bis(arylimido) neopentylidene complexes, candidates as olefin metathesis catalysts
作者:Andrew D. Horton、Richard R. Schrock
DOI:10.1016/s0277-5387(00)80695-6
日期:1988.1
Ar″NCO (Ar″ = 2,6-C6H3Cl2) yield only Re(NAr″)3(OSiMe3) (2c). Complexes of the type Re(NR)3(CH2tBu) (R = Ar, Ar′, Ar″) have been prepared straightforwardly. Complexes of the type Re(NR)2Cl3(py) (6) can be prepared by treating tris(imido) complexes 2 with 3 equiv. of pyHCl. These can be alkylated to give mononeopentyl bis(imido) derivatives, Re(NR)2(CH2tBu)Cl2 (8), in highyield. Dehydrohalogenation of