1479164-77-6Relevant articles and documents
PLANT CIRCADIAN RHYTHM REGULATING AGENT
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, (2016/10/08)
PROBLEM TO BE SOLVED: To provide a plant circadian rhythm regulating agent, and a more simple and convenient plant circadian rhythm regulating method. SOLUTION: A plant circadian rhythm regulating agent contains a heterocycle-containing compound represented by the general formula (1) or an agriculturally acceptable salt, hydrate or solvate thereof as an active ingredient. SELECTED DRAWING: None COPYRIGHT: (C)2016,JPOandINPIT
Development of 3-phenyl-N-(2-(3-phenylureido)ethyl)-thiophene-2-sulfonamide compounds as inhibitors of antiapoptotic Bcl-2 family proteins
Yang, Chengwen,Chen, Sha,Zhou, Mi,Li, Yan,Li, Yangfeng,Zhang, Zhengxi,Liu, Zhen,Ba, Qian,Li, Jingquan,Wang, Hui,Yan, Xiaomei,Ma, Dawei,Wang, Renxiao
supporting information, p. 1436 - 1452 (2014/07/21)
Antiapoptotic Bcl-2 family proteins, such as Bcl-xL, Bcl-2, and Mcl-1, are often overexpressed in tumor cells, which contributes to tumor cell resistance to chemotherapies and radiotherapies. Inhibitors of these proteins thus have potential applications in cancer treatment. We discovered, through structure-based virtual screening, a lead compound with micromolar binding affinity to Mcl-1 (inhibition constant (Ki)=3 μM). It contains a phenyltetrazole and a hydrazinecarbothioamide moiety, and it represents a structural scaffold not observed among known Bcl-2 inhibitors. This work presents the structural optimization of this lead compound. By following the scaffold-hopping strategy, we have designed and synthesized a total of 82 compounds in three sets. All of the compounds were evaluated in a fluorescence-polarization binding assay to measure their binding affinities to Bcl-xL, Bcl-2, and Mcl-1. Some of the compounds with a 3-phenylthiophene-2-sulfonamide core moiety showed sub-micromolar binding affinities to Mcl-1 (Ki=0.3-0.4 μM) or Bcl-2 (Ki≈1 μM). They also showed obvious cytotoxicity on tumor cells (IC 50L in a similar mode to ABT-737. Several apoptotic assays conducted on HL-60 cells demonstrated that these compounds are able to induce cell apoptosis through the mitochondrial pathway. We propose that the compounds with the 3-phenylthiophene-2-sulfonamide core moiety are worth further optimization as effective apoptosis inducers with an interesting selectivity towards Mcl-1 and Bcl-2. Hopping to inhibition: Several sets of derivatives of a lead compound have been designed and synthesized by following the scaffold-hopping strategy, and active compounds containing a 3-phenylthiophene-2-sulfonamide core moiety have been obtained. The most potent compounds have sub-micromolar binding affinity to the antiapoptotic protein Mcl-1 and are effective apoptosis inducers in living cells.