Further Evidence for the Triplet Mechanism in the Photosubstitution of Nitroaryl Ethers in Alkaline Medium.
作者:João Baptista Sargi Bonilha、Antonio Claudio Tedesco、Lazaro Cicero Nogueira、Maria Teresa Ribeiro Silva Diamantino、Júlio Cesar Carreiro
DOI:10.1016/s0040-4020(01)89887-2
日期:1993.4
Mechanistic studies show that nitroaryl ethers (3-nitroanisole, 3-nitrophenetole, n-butyl 3-nitrophenyl ether, 2-chloro-5-nitroanisole, 2-bromo-5-nitroanisole and 3,5-dinitro anisole) undergo nucleophilic aromatic photosubstitution with hydroxide ions through an SN23Ar* mechanism. An investigation of the quenching of exited states of nitroanyl ethers by bromide and thiosulfate ions in aqueous solutions
A series of 2-anilino-1,6-dihydro-6-oxo-5-pyrimidinecarboxylic acids with various substituents was synthesized and evaluated in the rat passive cutaneous anaphylaxis test for antiallergic activity. High activity by intraperitoneal and oral administrations was observed for the 3-trifluoromethyl and 2-alkoxyanilino derivatives (64, 79, 81, 82 and 85). Structure-activity relationships are discussed.
申请人:THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA
公开号:US20160194340A1
公开(公告)日:2016-07-07
The present invention is directed to arginase inhibitor compounds of formula IA or formula IB:
or a pharmaceutically acceptable salt thereof, compositions containing these compounds, and methods of their use for the treatment and diagnosis of conditions characterized by upregulation of arginase, abnormally high arginase activity, or by abnormally low nitric oxide synthase activity.
The parmodulin NRD-21 is an allosteric inhibitor of PAR1 Gq signaling with improved anti-inflammatory activity and stability
作者:Disha M. Gandhi、Ricardo Rosas、Eric Greve、Kaitlin Kentala、N'Guessan D.-R. Diby、Vladyslava A. Snyder、Allison Stephans、Teresa H.W. Yeung、Saravanan Subramaniam、Elliot DiMilo、Khia E. Kurtenbach、Leggy A. Arnold、Hartmut Weiler、Chris Dockendorff
DOI:10.1016/j.bmc.2019.06.043
日期:2019.9
Novel analogs of the allosteric, biased PAR1 ligand ML161 (parmodulin 2, PM2) were prepared in order to identify potential anti-thrombotic and anti-inflammatory compounds of the parmodulin class with improved properties. Investigations of structure-activity relationships of the western portion of the 1,3-diaminobenzene scaffold were performed using an intracellular calcium mobilization assay with endothelial cells, and several heterocycles were identified that inhibited PAR1 at sub-micromolar concentrations. The oxazole NRD-21 was profiled in additional detail, and it was confirmed to act as a selective, reversible, negative allosteric modulator of PAR1. In addition to inhibiting human platelet aggregation, it showed superior anti-inflammatory activity to ML161 in a qPCR assay measuring the expression of tissue factor in response to the cytokine TNF-alpha in endothelial cells. Additionally, NRD-21 is much more plasma stable than ML161, and is a promising lead compound for the parmodulin class for anti-thrombotic and anti-inflammatory indications.
An Efficient Intermolecular Palladium-Catalyzed Synthesis of Aryl Ethers
作者:Karen E. Torraca、Xiaohua Huang、Cynthia A. Parrish、Stephen L. Buchwald