Development of a Library of Thiophene‐Based Drug‐Like Lego Molecules: Evaluation of Their Anion Binding, Transport Properties, and Cytotoxicity
作者:Paulo Vieira、Margarida Q. Miranda、Igor Marques、Sílvia Carvalho、Li‐Jun Chen、Ethan N. W. Howe、Carl Zhen、Claudia Y. Leung、Michael J. Spooner、Bárbara Morgado、Odete A. B. Cruz e Silva、Cristina Moiteiro、Philip A. Gale、Vítor Félix
DOI:10.1002/chem.201904255
日期:2020.1.16
The anion-binding and transportproperties of an extensive library of thiophene-based molecules are reported. Seventeen bis-urea positional isomers, with different binding conformations and lipophilicities, have been synthesized by appending α- or β-thiophene or α-, β-, or γ-benzo[b]thiophene moieties to an ortho-phenylenediamine central core, yielding six subsets of positional isomers. Through 1 H NMR
据报道,大量基于噻吩的分子具有阴离子结合和转运特性。通过将α-或β-噻吩或α-,β-或γ-苯并[b]噻吩部分附加到邻苯二胺中心核上,合成了十七种具有不同结合构型和亲脂性的双脲位置异构体位置异构体的六个子集。通过1 H NMR,X射线晶体学,分子建模和阴离子外排研究,表明最活跃的转运蛋白采用尿素和CH结合基团协同作用的预组织结合构象,能够促进氯离子的识别。时尚。在电中性和电性条件下进行的其他大型单层囊泡化验,以及N-甲基-d-葡萄糖胺氯化物化验,已经表明阴离子外排主要通过H + / Cl-交换机制发生。另一方面,最有效的阴离子转运蛋白显示出对肿瘤细胞系的细胞毒性,而对囊性纤维化细胞系没有影响。
[EN] MODULATORS FOR NICOTINIC ACETYLCHOLINE RECEPTOR α2 AND α4 SUBUNITS<br/>[FR] MODULATEURS POUR LES SOUS-UNITÉS Α2 ET Α4 DE RÉCEPTEUR NICOTINIQUE DE L'ACÉTYLCHOLINE
申请人:SCRIPPS RESEARCH INST
公开号:WO2016191366A1
公开(公告)日:2016-12-01
Positive allosteric modulators (PAMs) of nicotinic acetylcholine receptors (nAChR) are important therapeutic candidates as well as valuable research tools. We identified a novel type II PAM, (R)-7-bromo-N-(piperidin-3-yl)benzo[b]thiophene-2-carboxamide (Br-PBTC), which both increases activation and reactivates desensitized nAChRs. This compound increases acetylcholine-evoked responses of α2* and α4* nAChRs, but is without effect on α3* or α6* nAChRs ("*" indicates presence of other nAChR subunits). Br-BPTC binds to the C-terminal extracellular sequences of a4 subunits, which is also a PAM site for steroid hormone estrogens such as 17-β estradiol. Br-PBTC is much more potent than estrogens. Like 17-P-estradiol, the non-steroid Br-PBTC only requires one α4 subunit to potentiate nAChR function, and its potentiation is stronger with more a4 subunits. This feature enables Br-BPTC to potentiate activation of (α4β2)(α6β2)β3 but not (α6β2)2β3 nAChRs. Various bioactive analogs of Br-PBTC are provided.
[EN] METHOD FOR PROMOTING PLANT GROWTH<br/>[FR] PROCÉDÉ POUR FAVORISER LA CROISSANCE DE PLANTES
申请人:SUMITOMO CHEMICAL CO
公开号:WO2012153861A1
公开(公告)日:2012-11-15
Disclosed is a method for promoting the growth of a plant, comprising treating the plant with an effective amount of a compound represented by the following formula (1):, wherein any one of R1, R2, R3 and R4 represents a trifluoromethyl group, and the others represent a hydrogen atom, or an agriculturally acceptable salt thereof.
Disclosed is a method for promoting the growth of a plant, comprising treating the plant with an effective amount of a compound represented by the following formula (
1
):, wherein any one of R
1
, R
2
, R
3
and R
4
represents a trifluoromethyl group, and the others represent a hydrogen atom, or an agriculturally acceptable salt thereof.