[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.
Reaction pathways for the cyclization of ortho-thioalkyl and ortho-thioaryl substituted phenyl radicals with alkynes. Reaction of o-methylthioarenediazonium tetrafluoroborates with alkynes to give 2-substituted benzo[b]thiophenes
An easily effected aromatic annelation is described involving reaction of O-thioalkyl and O-thioaryl substitutedPhenylradicals with alkynes to give2-substitutedbenzo[b]thiophenes; the mechanism is discussed.
描述了一种易于实现的芳族芳构化反应,该过程涉及O-硫代烷基和O-硫代芳基取代的苯基与炔烃的反应,生成2-取代的苯并[ b ]噻吩;讨论了该机制。
LEARDINI, R.;PEDULLI, G. F.;TUNDO, A.;ZANARDI, G., J. CHEM. SOC. CHEM. COMMUN., 1985, N 20, 1390-1391
作者:LEARDINI, R.、PEDULLI, G. F.、TUNDO, A.、ZANARDI, G.
DOI:——
日期:——
Potent, orally active aldose reductase inhibitors related to zopolrestat: surrogates for benzothiazole side chain
作者:Banavara L. Mylari、Thomas A. Beyer、Pamela J. Scott、Charles E. Aldinger、Michael F. Dee、Todd W. Siegel、William J. Zembrowski
DOI:10.1021/jm00081a006
日期:1992.2
broad structure-activity program was undertaken in search of effective surrogates for the key benzothiazole side chain of the potent aldose reductase inhibitor, zopolrestat (1). A structure-driven approach was pursued, which spanned exploration of three areas: (1) 5/6 fused heterocycles such as benzoxazole, benzothiophene, benzofuran, and imidazopyridine; (2) 5-membered heterocycles, including oxadiazole
为了寻找有效的醛糖还原酶抑制剂zopolrestat(1)的关键苯并噻唑侧链的有效替代物,进行了广泛的结构活性程序。追求结构驱动的方法,该方法涵盖了三个领域的探索:(1)5/6稠合杂环,如苯并恶唑,苯并噻吩,苯并呋喃和咪唑并吡啶;(2)5元杂环,包括带有侧基芳基的恶二唑,恶唑,噻唑和噻二唑,以及(3)苯并噻唑的形式当量的硫代苯胺。在糖尿病并发症的一项急性试验中,发现几种苯并恶唑和1,2,4-恶二唑衍生的类似物是有效的人胎盘醛糖还原酶抑制剂,并且在防止大鼠坐骨神经中山梨醇蓄积方面具有口服活性。3,4-Dihydro-4-oxo-3-[(5,(7-二氟-2-苯并恶唑基)甲基] -1-酞嗪乙酸(124)是苯并恶唑系列中最好的(IC50 = 3.2 x 10(-9)M); 当口服剂量为10 mg / kg时,它可将山梨醇在大鼠坐骨神经中的蓄积抑制78%。化合物139,3,4-二氢-4-氧代-3-[[[((2-氟苯基)-1
Palladium(II)/Polyoxometalate-Catalyzed Direct Alkenylation of Benzofurans under Atmospheric Dioxygen
作者:Qiufeng Huang、Shaojia Ke、Lin Qiu、Xiaofeng Zhang、Shen Lin
DOI:10.1002/cctc.201400091
日期:2014.6
An efficient and selective C2 alkenylation of benzofurans was performed by using Pd(OAc)2 combined with a catalytic amount of 11‐molybdovanadophosphoric acid (H4PMo11VO40) under an atmosphere of dioxygen. N‐Acetylglycine (Ac‐Gly‐OH) was observed to be an effective additive for the olefination reaction.
使用Pd(OAc)2和催化量的11-钼钒钒磷酸(H 4 PMo 11 VO 40),在双氧气氛下,对苯并呋喃进行了有效且选择性的C2烯基化反应。观察到N-乙酰甘氨酸(Ac-Gly-OH)是有效的烯化反应添加剂。