Substituted 2-aminopyridines as inhibitors of nitric oxide synthases
摘要:
A series of substituted 2-aminopyridines was prepared and evaluated as inhibitors of human nitric oxide synthases (NOS). 4,6-Disubstitution enhanced both potency and specificity for the inducible NOS with the most potent compound having an IC50 of 28 nM. (C) 2000 Elsevier Science Ltd. All rights reserved.
在混合水溶液/THF 溶液中,用三苯基膦对含有N-氧化物部分的杂芳基叠氮化物进行施陶丁格还原,得到胺和亚氨基正膦产物的混合物。结合使用1 H 和31 P NMR 光谱技术进行的产物分析研究表明,在这些系统中,即使在温和条件下,胺产物的产生也不是标准反应机制所预期的亚氨基正膦的水解,而是通过磷酰肼中间体的水解。生成的胺的量取决于起始叠氮化物的结构、溶剂的组成和反应条件。讨论了酸性、中性和碱性条件下胺形成的可能机制。
Sulfonylindoline compounds of formula I,
wherein R1 through R4, Y and Z have defined meanings, a process for preparation of such compounds, and the use as pharmaceutically active substances, particularly for the treatment or inhibition of neurodegeneration, cardiovascular disease, inflammatory disease, hypercholesterolemia, dyslipidemia, obesity or diabetes.
Substituted 2-aminopyridines as inhibitors of nitric oxide synthases
作者:William K Hagmann、Charles G Caldwell、Ping Chen、Philippe L Durette、Craig K Esser、Thomas J Lanza、Ihor E Kopka、Ravi Guthikonda、Shrenik K Shah、Malcolm MacCoss、Renee M Chabin、Daniel Fletcher、Stephan K Grant、Barbara G Green、John L Humes、Theresa M Kelly、Sylvie Luell、Roger Meurer、Vernon Moore、Stephen G Pacholok、Tony Pavia、Hollis R Williams、Kenny K Wong
DOI:10.1016/s0960-894x(00)00389-9
日期:2000.9
A series of substituted 2-aminopyridines was prepared and evaluated as inhibitors of human nitric oxide synthases (NOS). 4,6-Disubstitution enhanced both potency and specificity for the inducible NOS with the most potent compound having an IC50 of 28 nM. (C) 2000 Elsevier Science Ltd. All rights reserved.
Kinetic and mechanistic studies of the Staudinger reduction: On the chemistry of aryl phosphazides
作者:Samantha Y. Corrigan、James S. Poole
DOI:10.1002/poc.4442
日期:2023.2
The Staudingerreduction of heteroaryl azides containing an N-oxide moiety with triphenylphosphine in mixed aqueous/THF solutions yields a mixture of amine and iminophosphorane products. A product analysis study using a combination of 1H and 31P NMR spectroscopic techniques indicates that in these systems, even under mild conditions, the amine product is generated, not from the hydrolysis of the iminophosphorane
在混合水溶液/THF 溶液中,用三苯基膦对含有N-氧化物部分的杂芳基叠氮化物进行施陶丁格还原,得到胺和亚氨基正膦产物的混合物。结合使用1 H 和31 P NMR 光谱技术进行的产物分析研究表明,在这些系统中,即使在温和条件下,胺产物的产生也不是标准反应机制所预期的亚氨基正膦的水解,而是通过磷酰肼中间体的水解。生成的胺的量取决于起始叠氮化物的结构、溶剂的组成和反应条件。讨论了酸性、中性和碱性条件下胺形成的可能机制。