A method for forming an imine comprises reacting a first reactant comprising a hydroxyl functionality, a carbonyl functionality, or both a hydroxyl functionality and a carbonyl functionality with a second reactant having an amine functionality in the presence of ordered porous manganese-based octahedral molecular sieves and an oxygen containing gas at a temperature and for a time sufficient for the imine to be produced.
Synthesis of spiroisoindolinones by palladium-catalyzed heterocyclization of 2-iodobenzoyl chloride with ketimines
作者:Chan Sik Cho、Xue Wu、Li Hong Jiang、Sang Chul Shim、Hong Rak Kim
DOI:10.1002/jhet.5570360147
日期:1999.1
2-Iodobenzoyl chloride reacts with ketimines in acetonitrile at 100° undercarbonmonoxidepressure in the presence of a catalytic amount of a palladium catalyst together with triethylamine to afford the corresponding spiroisoindolinones in high yields.
The CB2 receptor has emerged as a potential target for the treatment of pruritus as well as pain without CB1-mediated side effects. We previously identified 2-pyridone derivatives 1 and 2 as potent CB2 agonists; however, this series of compounds was found to have unacceptable pharmacokinetic profiles with no significant effect in vivo. To improve these profiles, we performed further structural optimization of 1 and 2, which led to the discovery of bicyclic 2-pyridone 18e with improved CB2 affinity and selectivity over CB1. In a mouse pruritus model, 18e inhibited compound 48/80 induced scratching behavior at a dose of 100 mg/kg. In addition, the docking model of 18e with an active-state CB2 homology model indicated the structural basis of its high affinity and selectivity over CB1. (C) 2013 Published by Elsevier Ltd.
SYNTHESIS OF SOME NEW CYCLIC AMINOPHOSPHONATES AND THEIR PHYSIOLOGICAL ACTIVITIES
作者:J. S. Wieczorek、R. Gancarz、K. Bielecki、E. Grzyś、J. Sarapuk
DOI:10.1080/10426500108040237
日期:2001.8.1
The synthesis of 19 newly synthesized cyclic aminophosphonic acid derivatives was described and their biological activity studied. It was found, as in the case of the previously described series of acyclic analogues, that the phytotoxicity of the compounds, tested on aquatic plant Spirodela oligorrhiza depended mainly on their hydrophobic parameters. The most pronounced phytotoxicity, the measure of which was concentration of aminophosphonates causing 50% inhibition of plant growth (EC50), exhibited compounds with not too long hydrocarbon substituent on the nitrogen atom (8-10 carbon atoms) and branched propyl groups on the phosphorus atom. The test had preliminary character and permitted to eliminate the less promising compounds for further studies.
797. High-temperature (300—350°) reactions of cyclopentanone and some of its derivatives with ammonia and aliphatic amines