Synthesis of N-(carbonylamino)-1,2,3,6-tetrahydropyridines with analgesic, antiinflammatory, and hyperglycemic activity
作者:Jupita M. Yeung、Linda A. Corleto、Edward E. Knaus
DOI:10.1021/jm00344a020
日期:1982.2
the effects that changes in functionality at the carbonyl group have on analgesic, antiinflammatory, and hyperglycemic activities. One of the most active analgesic compounds was N-[(ethoxycarbonyl)amino]-1,2,3,6-tetrahydropyridine (5o), which was comparable to that of morphine. Pretreatment with naloxone did not alter the activity of 5o or 5q. N-[(2-Furanylcarbonyl)amino]-1,2,3,6-tetrahydropyridine (5q)
合成了一组N-(羰基氨基)-1,2,3,6-四氢吡啶,以研究羰基官能团的变化对镇痛,抗炎和高血糖活性的影响。活性最高的镇痛化合物之一是N-[(乙氧羰基)氨基] -1,2,3,6-四氢吡啶(5o),与吗啡相当。纳洛酮预处理不会改变5o或5q的活性。N-[(2-呋喃基羰基)氨基] -1,2,3,6-四氢吡啶(5q)是最有效的降血糖药,在100 mg / kg po剂量后第2和第4小时血糖升高181%。
Highly regioselective synthesis of 2,4,5-(hetero)aryl substituted oxazoles by intermolecular [3+2]-cycloaddition of unsymmetrical internal alkynes
作者:Elli Chatzopoulou、Paul W. Davies
DOI:10.1039/c3cc45410j
日期:——
A robust N-nucleophilic 1,3-N,O-dipole equivalent reacts with unsymmetrical internal alkynes under gold catalysis. Conjugation from a remote nitrogen lone pair enables and controls this convergent and highly regioselective process.
Rh(
<scp>III</scp>
)‐Catalyzed Diverse C—H Functionalization of Iminopyridinium Ylides
作者:Zhenzhen Dong、Pengfei Li、Xingwei Li、Bingxian Liu
DOI:10.1002/cjoc.202100203
日期:2021.9
Divergent synthesis of useful skeletons has been realized via rhodium(III)-catalyzed C—H activation of iminopyridinium ylides and coupling with various unsaturated coupling reagents. Isocoumarins and isoquinolones were obtained via cleavage of the C—N or N—N bond in the ylidic directing group, while fluorinated alkenes were delivered with the directing group intact. The reactions occurred with wide
Reaction of Diphenylcyclopropenethione with Pyridinium Imines
作者:J. W. Lown、K. Matsumoto
DOI:10.1139/v72-090
日期:1972.2.15
Reaction of diphenylcyclopropenethione with a variety of N-substituted pyridinium imines in refluxing benzene gives 2,4,5-trisubstituted-6H-1,3-oxazin-6-thiones in good to excellent yields. The structure of 2,4,5-triphenyl-6H-1,3-oxazin-6-thione prepared in this manner was proven by oxidation and by hydrolysis to the known 2,4,5-triphenyl-6H-1,3-oxazin-6-one. In the preparation of 4,5-diphenyl-2-ethoxy-6H-1
Ru(<scp>ii</scp>)-Catalyzed C–H bond activation/annulation of <i>N</i>-iminopyridinium ylides with sulfoxonium ylides
作者:Xiang Li、Danlu Li、Xiaofei Zhang
DOI:10.1039/d1ob02427b
日期:——
A Ru(II)-catalyzed C–H bond activation/annulation of N-iminopyridinium ylides with sulfoxoniumylides has been developed for the synthesis of diverse functionalized isocoumarin derivatives. This method features broad substrate scope, high functional group tolerance, simple operation and silver salt-free conditions. Furthermore, the synthetic utility of this method is demonstrated by the alkenylation
已经开发了一种 Ru( II ) 催化的N-亚氨基吡啶叶立德与锍叶立德的 C-H 键活化/环化,用于合成各种官能化的异香豆素衍生物。该方法具有底物范围广、官能团耐受性高、操作简单、无银盐条件等特点。此外,该方法的合成效用通过产物的烯基化和生物活性 thunberginol A 的有效合成得到证明。