Identification and optimisation of 5-amino-7-aryldihydro-1,4-diazepines as 5-HT2A ligands
摘要:
A several series of low molecular weight 5-HT2A leads were identified from an analysis of HTS data, the exploration of SAR and optimization of one series using parallel synthesis are described, affording compound 22 (5-HT2A IC50 1.1 nM). (c) 2006 Elsevier Ltd. All rights reserved.
作者:Thomas M. Gøgsig、Dennis U. Nielsen、Anders T. Lindhardt、Troels Skrydstrup
DOI:10.1021/ol300837d
日期:2012.5.18
The direct carbonylativepalladiumcatalyzedsynthesis of monoprotected 1,3-ketoaldehydes is reported starting from aryl iodides applying near stoichiometric amounts of carbonmonoxide. Besides representing platforms for a variety of heterocyclic structures, these motives serve as viable precursors for the highly relevant aryl methyl ketones. The presented strategy can also be adapted for the facile
Reaction of β-dimethylaminovinyl ketones with hydroxylamine: A simple and useful method for synthesis of 3- and 5-substituted isoxazoles
作者:Fernanda A. Rosa、Pablo Machado、Helio G. Bonacorso、Nilo Zanatta、Marcos A. P. Martins
DOI:10.1002/jhet.5570450337
日期:2008.5
The regioselective synthesis of 3- and 5-substituted-isoxazoles from the reaction of β-dimethyl-aminovinyl ketones [R-C(O)CHCH-NMe2, where R Ph, MeO-4-C6H4, F-4-C6H4, Cl-4-C6H4, Br-4-C6H4, O2N-4-C6H4, fur-2-yl, thien-2-yl, pyrrol-2-yl, Et and CCl3] and hydroxylamine hydrochloride varying only the reaction conditions (with and without the addition of pyridine) is reported.
由β-二甲基氨基乙烯基酮[RC(O)CH CH-NMe 2,其中R Ph,MeO-4-C 6 H 4,F-4- C 6 H 4,Cl-4-C 6 H 4,Br-4-C 6 H 4,O 2 N-4-C 6 H 4,呋喃-2-基,噻吩-2-基,吡咯-2-报道了仅改变反应条件(添加和不添加吡啶)的烷基,Et和CCl 3 ]和盐酸羟胺。
Clean and Efficient Synthesis of Isoxazole Derivatives in Aqueous Media
作者:Guolan Dou、Pan Xu、Qiang Li、Yukun Xi、Zhibin Huang、Daqing Shi
DOI:10.3390/molecules181113645
日期:——
A series of 5-arylisoxazole derivatives were synthesized via the reaction of 3-(dimethyl-amino)-1-arylprop-2-en-1-ones with hydroxylamine hydrochloride in aqueousmedia without using any catalyst. This method has the advantages of easier work-up, mild reaction conditions, high yields, and an environmentally benign procedure.
A novel synthesis of 1,2,4-oxadiazoles and isoxazoles
作者:Arif Kivrak、Metin Zora
DOI:10.1016/j.tet.2013.12.043
日期:2014.1
A novel synthesis of 1,2,4-oxadiazoles and isoxazoles is described by utilizing the reactions between amidoximes and α,β-alkynic aldehydes and/or ketones. Conjugate addition products, obtained from amidoximes and α,β-alkynic aldehydes and/or ketones, afford 1,2,4-oxadiazoles and isoxazoles when treated with bases and acids, respectively. 1,2,4-Oxadiazoles can also be synthesized directly from amidoximes
A novel synthesis of 5-substituted isoxazoles from propargylic amines and N -hydroxyphthalimide
作者:Yicheng Zhang、Wei Chen、Xueshun Jia
DOI:10.1016/j.tetlet.2018.04.062
日期:2018.5
A mild and efficient method for the synthesis of 5-substituted isoxazoles through cyclization of propargylic amines with N-hydroxyphthalimide (NHPI) under metal-free conditions was developed.