A Convenient One-Pot Preparative Method for 4,5-Diarylisoxazoles Involving Amine Exchange Reactions
摘要:
4,5-Diarylisoxazoles 1 are efficiently prepared by submitting enaminones 2, readily obtained from deoxybenzoins 3, to oximation conditions. This conversion implies an uncommon amine group exchange reaction. Preparation of 4-isoxazolines 5 and ring-opening transformations to beta-keto nitriles 4 and 1,3-amino alcohol derivatives 7 are also described.
The application of disubstituted vinylogous iminium salts and related synthons to the regiocontrolled preparation of unsymmetrical 2,3,4-trisubstituted pyrroles
作者:John T. Gupton、Keith E. Krumpe、Bruce S. Burnham、Kate A. Dwornik、Scott A. Petrich、Karen X. Du、Marc A. Bruce、Phong Vu、Marian Vargas、Kartik M. Keertikar、Kirsten N. Hosein、Claude R. Jones、James A. Sikorski
DOI:10.1016/s0040-4020(98)00247-6
日期:1998.5
N-methylglycinate, and ethyl N-benzylglycinate have been studied under acidic, basic and neutral conditions. Such reactions have resulted in efficient and selective methodology for the synthesis of unsymmetrical 2,3,4-trisubstituted pyrrole systems.
Expedient synthesis of highly substituted 3,4-dihydro-1,2-oxathiine 2,2-dioxides and 1,2-oxathiine 2,2-dioxides: revisiting sulfene additions to enaminoketones
作者:Stuart Aiken、Kelechi Anozie、Orlando D. C. C. de Azevedo、Lewis Cowen、Ross J. L. Edgar、Christopher D. Gabbutt、B. Mark Heron、Philippa A. Lawrence、Abby J. Mills、Craig R. Rice、Mike W. J. Urquhart、Dimitrios Zonidis
DOI:10.1039/c9ob01657k
日期:——
Diversely substituted 1,2-oxathiine 2,2-dioxides, including 3,5,6-triaryl-, 3,6-diaryl-, 3,5-diaryl-, 5,6-diaryl- and selected fused heterocyclic analogues, have been efficiently obtained by the application of a mild Cope elimination of a 4-amino moiety from the requisite 4-amino-3,4-dihydro-1,2-oxathiine 2,2-dioxides, which themselves were readily obtained by the addition of sulfenes to enaminoketones
Synthesis, chemical, and biological properties of vinylogous hydroxamic acids: dual inhibitors of 5-lipoxygenase and IL-1 biosynthesis
作者:Stephen W. Wright、Richard R. Harris、Janet S. Kerr、Alicia M. Green、Donald J. Pinto、Elaine M. Bruin、Robert J. Collins、Roberta L. Dorow、Lisa R. Mantegna
DOI:10.1021/jm00100a011
日期:1992.10
of each being dependent upon the structure of the VHA, solvent, and pH. VHAs undergo some of the typical reactions of hydroxamic acids as well as those of vinylogous amides. VHAs are active as inhibitors of 5-lipoxygenase and of IL-1 biosynthesis in vitro, which do not inhibit other enzymes of the arachidonic acid cascade. They have been shown by ESR studies to bring about inhibition of soybean type
Substituted furo[2,3-B] pyridine derivatives as cannabinoid-1 receptor modulators
申请人:Clements Matthew J.
公开号:US20080269279A1
公开(公告)日:2008-10-30
Novel compounds of the structural formula (I) are antagonists and/or inverse agonists of the Cannabinoid-1 (CB1) receptor and are useful in the treatment, prevention and suppression of diseases mediated by the CB1 receptor. The compounds of the present invention are useful as centrally acting drugs in the treatment of psychosis, memory deficits, cognitive disorders, Alzheimer's disease, migraine, neuropathy, neuro-inflammatory disorders including multiple sclerosis and Guillain-Barre syndrome and the inflammatory sequelae of viral encephalitis, cerebral vascular accidents, and head trauma, anxiety disorders, stress, epilepsy, Parkinson's disease, movement disorders, and schizophrenia. The compounds are also useful for the treatment of substance abuse disorders, the treatment of obesity or eating disorders, as well as the treatment of asthma, constipation, chronic intestinal pseudo-obstruction, cirrhosis of the liver, non-alcoholic fatty liver disease (NAFLD), non-alcoholic steatohepatitis (NASH), and the promotion of wakefulness.
Substituted 1H-pyridinyl-2-ones as GABAA alpha 2/3 ligands
申请人:Merck Sharp & Dohme Limited
公开号:US06352994B2
公开(公告)日:2002-03-05
Compounds according to Formula (I) or a salt thereof are selective ligands for GABAA receptors useful for treatment of disorders of the central nervous system: