Evidence for Homo-Conjugation between Two Revolving 14π-Electron Systems in 10b-Methyl-10c-[2-(10b,10c-dimethyl-10b,10c-dihydropyrenyl)]-10b,10c-dihydropyrene
摘要:
Ring contraction followed by an elimination reaction on anti-9-methyl-18-trans-2-(10b,10c-dimethyl-10b,10c-dihydropyrenyl)-2,11-dithia[3,3]metacyclophane gave the desired compound 10b-methyl-10c-[2-(10b,10c-dimethyl-10b,10c-dihydropyrenyl)]-10b,10c-dihydropyrene. 1H NMR spectroscopic analysis indicated a ring current effect over a considerable distance from the macro-molecular plane of each of the aromatic rings with the two pi systems freely rotating. Bathochromic shifts and peak broadening in its electronic spectrum clearly supports the presence of through-space pi-pi interactions between the two aromatic rings. This should serve as a good model to verify homo-conjugation effect in such a novel system where the two pi systems are freely revolving.
The present invention covers [1,2,4]triazolo[1,5-c]quinazolin-5-amine compounds of general formula (I) in which R1, R2, R3, R4, R5, R6, R7 and R8 are as defined herein, methods of preparing said compounds, intermediate compounds useful for preparing said compounds, pharmaceutical compositions and combinations comprising said compounds and the use of said compounds for manufacturing pharmaceutical compositions for the treatment or prophylaxis of diseases, in particular of cancer or conditions with dysregulated immune responses or other disorders associated with aberrant AHR signaling, as a sole agent or in combination with other active ingredients.
Ring-Expansion Reaction of Cyano-Substituted Singlet Phenyl Nitrenes: Theoretical Predictions and Kinetic Results from Laser Flash Photolysis and Chemical Trapping Experiments
作者:Nina P. Gritsan、Igor Likhotvorik、Meng-Lin Tsao、Nil Çelebi、Matthew S. Platz、William L. Karney、Carl R. Kemnitz、Weston Thatcher Borden
DOI:10.1021/ja002594b
日期:2001.2.1
rate of cyclization. These qualitative predictions have been tested computationally by performing (8/8)CASSCF and CASPT2/6-31G* ab initio calculations and experimentally by carrying out laserflashphotolysis and chemical trapping studies. The calculations and experiments both find that, unlike the case with ortho fluoro and ortho methyl substituents, the rate of cyclization at a substituted carbon is
根据苯氮烯最低单线态的开壳电子结构,预测邻位碳上自由基稳定氰基的取代应促进该碳上的环化,而对位碳上的氰基取代应延缓环化速率。这些定性预测已经通过执行 (8/8)CASSCF 和 CASPT2/6-31G* ab initio 计算进行了计算测试,并通过进行激光闪光光解和化学捕获研究进行了实验测试。计算和实验都发现,与使用邻氟和邻甲基取代基的情况不同,取代碳的环化速率不受邻氰基的阻碍。相比之下,在计算和实验上都发现了对氰基,
Base-Promoted Synthesis of 2-Aryl Quinazolines from 2-Aminobenzylamines in Water
作者:Tanmay Chatterjee、Dong In Kim、Eun Jin Cho
DOI:10.1021/acs.joc.8b00327
日期:2018.7.20
transition-metal-free procedure for the synthesis of a highly valuable class of heteroaromatics, quinazolines, was developed by using easily available 2-aminobenzylamines and α,α,α-trihalotoluenes. The transformation proceeded smoothly in the presence of only sodium hydroxide and molecular oxygen in water at 100 °C, furnishing a variety of 2-aryl quinazolines. The crystallization process of the crude
[EN] BENZYLAMINOPYRIDYLCYCLOPROPANECARBOXYLIC ACIDS, PHARMACEUTICAL COMPOSITIONS AND USES THEREOF<br/>[FR] ACIDES BENZYLAMINOPYRIDYLCYCLOPROPANECARBOXYLIQUES, COMPOSITIONS PHARMACEUTIQUES ET LEURS UTILISATIONS
申请人:BOEHRINGER INGELHEIM INT
公开号:WO2018077699A1
公开(公告)日:2018-05-03
The present invention relates to compounds of general formula (I) wherein the groups R, R1, R2, R3, m and n are defined as in claim 1, which have valuable pharmacological properties, in particular bind to the GPR40 receptor and modulate its activity. The compounds are suitable for treatment and prevention of diseases which can be influenced by this receptor, such as metabolic diseases, in particular diabetes type 2. Furthermore, the invention relates to novel intermediates, useful for the synthesis of compounds of formula (I).
[EN] BENZYLAMINOPYRAZINYLCYCLOPROPANECARBOXYLIC ACIDS, PHARMACEUTICAL COMPOSITIONS AND USES THEREOF<br/>[FR] ACIDES BENZYLAMINOPYRAZINYLCYCLOPROPANECARBOXYLIQUES, COMPOSITIONS PHARMACEUTIQUES ET UTILISATIONS ASSOCIÉES
申请人:BOEHRINGER INGELHEIM INT
公开号:WO2018138028A1
公开(公告)日:2018-08-02
The present invention relates to compounds of general formula (I), wherein the groups R, R1, R2, R3, m and n are defined as in claim 1, which have valuable pharmacological properties, in particular bind to the GPR40 receptor and modulate its activity. The compounds are suitable for treatment and prevention of diseases which can be influenced by this receptor, such as metabolic diseases, in particular diabetes type 2.