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.
Structure–activity relationships of 2-aminothiazoles effective against Mycobacterium tuberculosis
摘要:
A series of 2-aminothiazoles was synthesized based on a HTS scaffold from a whole-cell screen against Mycobacterium tuberculosis (Mtb). The SAR shows the central thiazole moiety and the 2-pyridyl moiety at C-4 of the thiazole are intolerant to modification. However, the N-2 position of the aminothiazole exhibits high flexibility and we successfully improved the antitubercular activity of the initial hit by more than 128-fold through introduction of substituted benzoyl groups at this position. N-(3-Chlorobenzoyl)-4-(2-pyridinyl)-1,3-thiazol-2-amine (55) emerged as one of the most promising analogues with a MIC of 0.024 mu M or 0.008 mu g/mL in 7H9 media and therapeutic index of nearly similar to 300. However, 55 is rapidly metabolized by human liver microsomes (t(1/2) = 28 min) with metabolism occurring at the invariant aminothiazole moiety and Mtb develops spontaneous low-level resistance with a frequency of similar to 10 (5). (C) 2013 Elsevier Ltd. All rights reserved.
Disclosed is an in vitro screening method for identifying an antagonist-to-agonist allosteric modifier of a mu-opioid receptor and an in vivo method for confirming that a test compound is such a modifier of a mu-opioid receptor. Also disclosed is a method for treating an opioid receptor-associated condition using a compound of Formula (I) and a pharmaceutical composition containing the same.
(4-phenyl-1-piperazinyl)alkyl moieties at the 2-position were synthesized and tested for calciumantagonistic and calmodulin antagonistic activities. Antihypertensive effects in spontaneously hypertensive rats were also evaluated. In general, these compounds were rather weak calciumchannel blockers, although, in contrast, many of them had moderate to potent calmodulin antagonistic activity, and 2-[3-
A poised fragment library enables rapid synthetic expansion yielding the first reported inhibitors of PHIP(2), an atypical bromodomain
作者:Oakley B. Cox、Tobias Krojer、Patrick Collins、Octovia Monteiro、Romain Talon、Anthony Bradley、Oleg Fedorov、Jahangir Amin、Brian D. Marsden、John Spencer、Frank von Delft、Paul E. Brennan
DOI:10.1039/c5sc03115j
日期:——
High concentration crystal soaking of poised fragments and one-step elaboration identified compound 17 as an inhibitor of the PHIP(2) bromodomain.
高浓度晶体浸泡对准的片段和一步法阐述确定化合物17为PHIP(2)溴结构域的抑制剂。
Multipathways for the Synthesis of Fused Bicyclic 2-Aminothiazolyl Compounds Tuned by Ring Size
作者:Xiaoyong Xu、Pengfei Liu、Hongfeng Shen、Xusheng Shao、Zhong Li
DOI:10.1055/s-0034-1379100
日期:——
methodology for the synthesis of fused bicyclic 2-aminothiazolyl compounds has been developed, using cyclocondensation of aromatic thioureas with α,β-epoxy cycloketones in alcohol under microwave irradiation without any catalyst. The product distribution is related to the ring size of α,β-epoxy cycloketones. Mechanistic studies suggest that the reactions share analogous bicyclic dihydroxy intermediates but