Fluoride ion catalyzed multicomponent reactions for efficient synthesis of 4H-chromene and N-arylquinoline derivatives in aqueous media
作者:Shijay Gao、Cheng Hsuan Tsai、Chi Tseng、Ching-Fa Yao
DOI:10.1016/j.tet.2008.06.061
日期:2008.9
4H-Chromene and N-arylquinoline derivatives are obtained in good to excellent yields by proceeding through a simple, mild, and efficient procedure utilizing tetrabutylammonium fluoride (TBAF) as catalyst.
The reaction of cyclic enaminones with arylidenemalononitriles was carried out in the presence of 13X molecular sieves in dimethyl sulfoxide. Under these mild reaction conditions, various bioactive N-aryl-4-arylhexahydroquinoline derivatives were obtained in high yields without the necessity of using transition-metal catalyst, organobase, or reflux conditions.
DBU-catalyzed expeditious and facile multicomponent synthesis of N-arylquinolines under microwave irradiation
作者:Satish Kumar Singh、Krishna Nand Singh
DOI:10.1007/s00706-011-0651-y
日期:2012.5
AbstractN-Arylquinoline derivatives are obtained in excellent yields by a rapid, easy, and efficient one-potmulticomponent reaction of aromatic aldehydes, 3-arylamino-5,5-dimethylcyclohex-2-enone, and active methylene compounds utilizing 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) as a catalyst in ethanol undermicrowave irradiation. Graphical abstract
POLYHYDROQUINOLINE COMPOUNDS AND DIHYDROPYRIDINE COMPOUNDS FOR INHIBITING BETA-AMYLOID PRODUCTION
申请人:Mullan Michael J.
公开号:US20100119599A1
公开(公告)日:2010-05-13
Provided are methods of treating or reducing the risk of developing beta-amyloid production, beta-amyloid deposition, beta-amyloid neurotoxicity (including abnormal hyperphosphorylation of tau) and microgliosis associated with cerebral accumulation of Alzheimer's amyloid by administering therapeutically effective amounts of polyhydroquinoline and dihydropyridine compounds which decrease Abeta production in cells. Further provided are methods for diagnosing diseases associated with cerebral accumulation of Alzheimer's amyloid in animals or humans by administering diagnostically effective amounts of polyhydroquinoline and dihydropyridine compounds which decrease Abeta production in cells.