Geometrical Isomerism of Phenylhydrazones of α-Keto Esters. II.<i>p</i>-Substituted Phenylhydrazones of Ethyl Pyruvate and 2,4-Dinitrophenylhydrazones of Some α-Keto Esters
molecule on the basis of IR and 1H NMR spectra. In all cases, isomers with higher Rf-values on a silica gel TLC (using benzene as a developing solvent) involved an intramolecular hydrogen bonding between the imino hydrogen and the ester carbonyl oxygen. Thus, the Z-structure was assigned. An E-structure was assigned to other isomers with lower Rf-values. The present assignment is, thus, entirely the same
丙酮酸乙酯的各种取代苯腙和一些α-酮酯的2,4-二硝基苯腙的每种几何异构体均以纯态分离。通过将腙在含有 C、H 和 Cl 的有机溶剂中的溶液保持在黑暗中,使前腙的 E-异构体部分异构化为 Z-异构体。根据 IR 和 1H NMR 光谱,每个分子都具有 E 或 Z 结构。在所有情况下,在硅胶 TLC(使用苯作为展开溶剂)上具有较高 Rf 值的异构体涉及亚氨基氢和酯羰基氧之间的分子内氢键。因此,指定了 Z 结构。E 结构被分配给具有较低 Rf 值的其他异构体。因此,目前的分配与先前调查中提出的分配完全相同。
The present application provides compounds, including all stereoisomers, solvates, prodrugs and pharmaceutically acceptable faints thereof according to
wherein all of the variables are defined herein.
本申请提供了化合物,包括所有立体异构体、溶剂化物、前药和药学上可接受的盐,其中所有变量在此定义。
[EN] AZOLOPYRROLONE MELANIN CONCENTRATING HORMONE RECEPTOR-1 ANTAGONISTS<br/>[FR] ANTAGONISTES DE RÉCEPTEUR-1 DE L'HORMONE DE MÉLANO-CONCENTRATION D'AZOLOPYRROLONE
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2010047956A9
公开(公告)日:2011-10-06
US8415386B2
申请人:——
公开号:US8415386B2
公开(公告)日:2013-04-09
GABAA Receptor Ligands Often Interact with Binding Sites in the Transmembrane Domain and in the Extracellular Domain—Can the Promiscuity Code Be Cracked?
作者:Maria Teresa Iorio、Florian Daniel Vogel、Filip Koniuszewski、Petra Scholze、Sabah Rehman、Xenia Simeone、Michael Schnürch、Marko D. Mihovilovic、Margot Ernst
DOI:10.3390/ijms21010334
日期:——
sites that modulate gamma aminobutyric acid (GABA) effects have been described in heteropentameric GABA type A (GABAA) receptors, among them sites for benzodiazepines, pyrazoloquinolinones and etomidate. Diazepam not only binds at the high affinity extracellular “canonical” site, but also at sites in the transmembrane domain. Many ligands of the benzodiazepine binding site interact also with homologous