Phosphorus−Nitrogen Compounds. 21. Syntheses, Structural Investigations, Biological Activities, and DNA Interactions of New N/O Spirocyclic Phosphazene Derivatives. The NMR Behaviors of Chiral Phosphazenes with Stereogenic Centers upon the Addition of Chiral Solvating Agents
摘要:
The reactions of hexachlorocyclotriphosphazatriene, N3P3Cl6, with N/O-donor-type N-alkyl (or aryl)-o-hydroxybenzylamines (la-le) produce mono- (2a-2e), di- (3a-3d), and tri- (4a and 4b) spirocyclic phosphazenes. The tetrapyrrolidino monospirocyclic phosphazenes (2f-2i) are prepared from the reactions of partly substituted compounds (2a-2d) with excess pyrrolidine. The dispirodipyrrolidinophosphazenes (3e-3h) and trispirophosphazenes (3i-3k) are obtained from the reactions of trans-dispirophosphazenes with excess pyrrolidine and sodium (3-amino-1-propanoxide), respectively. Compounds 3a-3d have cis and trans geometric isomers. Only the trans isomers of these compounds are isolated. Compounds 3a-3h have two stereogenic P atoms. They are expected to be in cis (meso) and trans (racemic) geometric isomers. In the trans trispiro compounds (3i-3k), there are three stereogenic P atoms. They are expected to be in racemic mixtures. The stereogenic properties of 3a-3k are confirmed by P-31 NMR spectroscopy upon the addition of the chiral solvating agent; (S)-(+)-2,2,2-trifluoro-1-(9'-anthryl)ethanol. The molecular structures of 3i-3k, 4a, and 4b look similar to a propeller, where the chemical environment of one P atom is different from that of others. Additionally, 4a and 4b are also expected to exist as cis-trans-trans and cis-cis-cis geometric isomers, but both of them are found to be in cis-trans-trans geometries. The solid-state structures of 2a, 2e, 2f, 3e, and 31 are determined by X-ray crystallography. The compounds 2f-2i, 3e-3i, and 3k are screened for antibacterial activity against Gram-positive and Gram-negative bacteria and for antifungal activity against yeast strains. These compounds (except 3f) have shown a strong affinity against most of the bacteria. Minimum inhibitory concentrations (MIC) are determined for 2f-2i, 3e-3i, and 3k. DNA binding and the nature of interaction with pUC18 plasmid DNA are studied. The compounds 2f-2i, 3e-3i, and 3k induce changes on the DNA mobility. The prevention of BamHI and HindIII digestion (except 2g) with compounds indicates that the compounds bind with nucleotides in DNA.
Qualitative Analysis of the Stability of the Oxazine Ring of Various Benzoxazine and Pyridooxazine Derivatives with Proton Nuclear Magnetic Resonance Spectroscopy
作者:Gerard P. Moloney、David J. Craik、Magdy N. Iskander
DOI:10.1002/jps.2600810721
日期:1992.7
3-benzoxazine and 3,4-dihydro-1,3-pyridooxazine derivatives was synthesized, and the hydrolysis of the derivatives was studied with proton nuclearmagneticresonancespectroscopy. The oxazine derivatives underwent various degrees of hydrolysis when H2O was added to dimethyl sulfoxide solutions of the compounds. The rates and extents of decomposition of the oxazine ring systems depended on the electronic effects
Provided herein are compounds and compositions useful in increasing PPARδ activity. The compounds and compositions provided herein are useful for the treatment of PPARδ related diseases (e.g., muscular diseases, vascular disease, demyelinating disease, and metabolic diseases).
[EN] PPAR AGONISTS AND METHODS OF USE THEREOF<br/>[FR] AGONISTES DE PPAR ET LEURS MÉTHODES D'UTILISATION
申请人:SALK INST FOR BIOLOGICAL STUDI
公开号:WO2016057322A1
公开(公告)日:2016-04-14
Provided herein are deuterated compounds and compositions useful in increasing PPAR5 activity. The compounds and compositions provided herein are useful for the treatment of PPAR5 related diseases (e.g., muscular diseases, vascular disease, demyelinating disease, and metabolic diseases).
dearomatization of phenols using Ag carbenoids from α-diazoacetamides. The Ag catalyst promoted intramolecular dearomatization of phenols, whereas a Rh or Cu catalyst caused C-Hinsertion and a Büchner reaction. Studies indicated Ag carbenoids have a carbocation-like character, making their behavior and properties unique. Highly enantioselective transformations using Ag carbenoids have not been reported. We achieved
我们报告了使用来自 α-重氮乙酰胺的 Ag 卡宾对苯酚进行不对称脱芳构化。Ag 催化剂促进酚类的分子内脱芳构化,而 Rh 或 Cu 催化剂引起 CH 插入和 Büchner 反应。研究表明,银类卡宾具有类似碳正离子的特性,使其行为和特性独一无二。尚未报道使用 Ag 卡宾的高度对映选择性转化。我们首次实现了具有底物通用性的 Ag 卡宾介导的化学和高度对映选择性苯酚脱芳构化。
PHENYLPYRAZOLE DERIVATIVES AS POTENT ROCK1 AND ROCK2 INHIBITORS
申请人:Bristol-Myers Squibb Company
公开号:US20140243338A1
公开(公告)日:2014-08-28
The present invention provides compounds of Formula (I):
or stereoisomers, tautomers, or pharmaceutically acceptable salts thereof, wherein all the variables are as defined herein. These compounds are selective ROCK inhibitors. This invention also relates to pharmaceutical compositions comprising these compounds and methods of treating cardiovascular, smooth muscle, oncologic, neuropathologic, autoimmune, fibrotic, and/or inflammatory disorders using the same.