155593-80-9Relevant academic research and scientific papers
Design and synthesis of tag-free photoprobes for the identification of the molecular target for CCG-1423, a novel inhibitor of the Rho/MKL1/SRF signaling pathway
Bell, Jessica L.,Haak, Andrew J.,Wade, Susan M.,Sun, Yihan,Neubig, Richard R.,Larsen, Scott D.
, p. 966 - 973 (2013/07/11)
CCG-1423 and related analogues represent a new class of inhibitors of Rho/MKL1/SRF-mediated gene transcription, a pathway that has been implicated in both cancer and fibrosis. The molecular target for these compounds is unknown. To facilitate its identification, a series of tag-free photoaffinity probes was designed and synthesized, each one containing a photoactivatable group and an acetylenic end group for subsequent attachment to a fluorescent tag using click chemistry. All were confirmed to maintain biological activity in a cell-based assay for inhibition of SRE-Luc expression. The functional activity of the most potent probe 24 was further confirmed in an assay for PC-3 cell migration. Photolysis of 24 in intact PC-3 cells followed by cell lysis, click ligation of a fluorescent dye, and gel electrophoresis revealed specific labeling of a single 24 kDa band that could be blocked with an active competitor. Future work will focus on identifying the labeled protein(s).
Synthesis of N-(3-azido-4-chlorophenyl)-N'-[3H-methyl]thiourea, an efficient photoaffinity probe for the urea carrier
Lamotte,Degeilh,Neau,Ripoche,Rousseau
, p. 289 - 295 (2007/10/02)
Starting from commercial 4-chloro-3-nitroaniline, through a 5 step synthesis, was prepared 3-azido-4-chlorophenylisothiocyanate 5 which was reacted with [3H]-methylamine. The latter was obtained by three methods: i- [3H]-LiAlT4 reduction of benzylcarbamate gave rise to [3H][-methylamine (S.A.: >70 Ci/mmol). ii- Catalytic reduction of HCN with 3H2 lead to [3H]-CH3NH2 (S.A.: 0.7 Ci/mmol). iii- Schmidt rearrangement of [3H]-sodium acetate gave [3H]-CH3NH2 (S.A.: 29 Ci/mmol). Compound 7 at the highest specific activity had a self radiolysis rate precluding its practical use in biological studies whilst 29 Ci/mmol [3H]-7 was satisfactory.
