Design and synthesis of novel bis-thiazolone derivatives as micromolar CDC25 phosphatase inhibitors: Effect of dimerisation on phosphatase inhibition
摘要:
CDC25 phosphatases are involved in deregulated cell cycle progression and tumor development with poor prognosis. Among the most potent CDC25 inhibitors, quinonoid-based derivatives have been extensively studied. Dimerisation of heterocyclic quinones has led to IRC-083864, a bis-quinone compound with increased CDC25B inhibitory activity. Thirty-one bis-thiazolone derivatives were synthesized and assayed for CDC25 inhibitory activity. Most of the dimers displayed enhanced inhibitory activities with micromolar IC50 values lower than that observed for each thiazolone scaffold separately. Moreover, most of these compounds were selective CDC25 inhibitors. Dimer 40 showed an IC50 value of 2.9 mu M and could inhibit CDC25 activity without generating reactive oxygen species which is likely to occur with quinone-based inhibitors. Molecular docking studies suggested that the dimers could bind simultaneously to the active site and the inhibitor binding pocket. (C) 2012 Elsevier Ltd. All rights reserved.
A convenient synthesis of 2-Arylidene-5<i>H</i>-thiazolo[2,3-<i>b</i>]quinazo-line-3,5[2<i>H</i>]-diones and their benzoquinazoline derivatives
作者:Ahmed I. Khodair
DOI:10.1002/jhet.5570390607
日期:2002.11
Various 5H-thiazolo[2,3-b]quinazoline-3,5[2H]-diones (7a,b), 2-arylidene-5H-thiazolo[2,3–b]quin-azoline-3,5[2H]-diones (9a-o) and 2-arylidene-5H-thiazolo[2,3-b]benzoquinazoline-3,5[2H]-diones (12a,b) have been synthesized via simple and efficient methods.
各种5 H-噻唑并[2,3- b ]喹唑啉-3,5 [2 H ]-二酮(7a,b),2-亚芳基-5 H-噻唑并[2,3 - b ]喹唑啉-3,通过简单和简单的方法合成了5 [2 H ]-二酮(9a-o)和2-芳叉基5 H-噻唑并[2,3 - b ]苯并喹唑啉-3,5 [2 H ]-二酮(12a,b)。有效的方法。
Jadhav, Santosh A.; Shioorkar, Mahesh. G.; Chavan, Omprakash S., Indian Journal of Heterocyclic Chemistry, 2016, vol. 25, # 3-4, p. 201 - 207
[EN] FLUOROGEN ACTIVATING AND SHIFTING TAG (FAST)<br/>[FR] ÉTIQUETTE D'ACTIVATION ET DE DÉCALAGE DU SPECTRE D'UN FLUOROGÈNE (FAST)
申请人:PARIS SCIENCES LETTRES QUARTIER LATIN
公开号:WO2016001437A2
公开(公告)日:2016-01-07
The present invention relates to a functional derivative of a Photoactive Yellow Protein (PYP), or a functional fragment thereof, for fluorescently labelling particles, e.g. proteins, or surfaces, which is capable of binding reversibly a fluorogenic chromophore of formula (I), and which is capable of enhancing the brightness of the said fluorogenic chromophore upon complexation thereto; and of inducing the spectral shift of the said fluorogenic chromophore through the ionization of an auxochromic group thereof.