Multicomponent condensation of 1,2-dihydropyrazol-3-one derivatives with carbonyl compounds and Meldrum´s acid
作者:B. V. Lichitskii、A. O. Osipov、A. N. Komogortsev、A. A. Dudinov、M. M. Krayushkin
DOI:10.1007/s11172-015-0982-7
日期:2015.5
A convenient method for the synthesis of earlier unknown 3-aryl-3-(3-oxo-2,3-dihydro-1H-pyrazol-4-yl)propionic acid derivatives was developed based on the multicomponent condensation of 1,2-dihydropyrazol-3-ones, carbonylcompounds, and Meldrum´s acid.
5-Iodo-3-Ethoxypyrazoles: An Entry Point to New Chemical Entities
作者:Sandrine Guillou、Yves L. Janin
DOI:10.1002/chem.200903442
日期:2010.4.19
focused on the preparation of new pyrazole derivatives, has led us to report here an original and simplified preparation of ethyl 3‐ethoxy‐1H‐pyrazole‐4‐carboxylate. This is based on the reaction of hydrazine monohydrochloride and diethyl 2‐(ethoxymethylene)malonate. Further transformations of this key compound allowed the preparation of the two possible iodinated isomers, namely, 3‐ethoxy‐4‐iodo‐ and
Alkoxypyrazoles and the process for their preparation
申请人:Institut Pasteur
公开号:EP2151434A1
公开(公告)日:2010-02-10
The present invention relates to a process for the preparation of alkoxypyrazoles and new alkoxypyrazole compounds.
本发明涉及一种制备烷氧基吡唑和新烷氧基吡唑化合物的方法。
[EN] ACTIVATORS OF SOLUBLE GUANYLATE CYCLASE<br/>[FR] ACTIVATEURS DE GUANYLATE CYCLASE SOLUBLE
申请人:UNIV LONDON
公开号:WO2000027394A1
公开(公告)日:2000-05-18
The present invention describes the use of pyrazole or indazole derivates as activators of soluble guanylate cyclase. Some compounds disclosed are novel. All activators are vasodilators and/or inhibit platelet aggregation and are therefore useful in the treatment of peripheral vascular diseases such as hypertension, angina pectoris or atherosclerosis, or in the treatment of prevention of glaucoma, preeclampsia, Raynaud's syndrome, stroke or erectile disfunctions.
Synthesis and Biological Evaluation of Novel Pyrazoles and Indazoles as Activators of the Nitric Oxide Receptor, Soluble Guanylate Cyclase
作者:David L. Selwood、David G. Brummell、Joanna Budworth、Guillaume E. Burtin、Richard O. Campbell、Surinder S. Chana、Ian G. Charles、Patricia A. Fernandez、Robert C. Glen、Maria C. Goggin、Adrian J. Hobbs、Marcel R. Kling、Qian Liu、David J. Madge、Sylvie Meillerais、Kenneth L. Powell、Karen Reynolds、Graham D. Spacey、Jeremy N. Stables、Mark A. Tatlock、Kerry A. Wheeler、Grant Wishart、Chi-Kit Woo
DOI:10.1021/jm001034k
日期:2001.1.1
Database searching and compound screening identified 1-benzyl-3-(3-dimethylaminopropyloxy)-indazole (benzydamine, 3) as a potent activator of the nitric oxide receptor, soluble guanylate cyclase. A comprehensive structure-activity relationship study surrounding 3 clearly showed that the indazole C-3 dimethylaminopropyloxy substituent was critical for enzyme activity. However replacement of the indazole ring of 3 by appropriately substituted pyrazoles maintained enzyme activity. Compounds were evaluated for inhibition of platelet aggregation and showed a general lipophilicity requirement. Aryl-substituted pyrazoles 32, 34, and 43 demonstrated potent activation of soluble guanylate cyclase and potent inhibition of platelet aggregation. Pharmacokinetic studies in rats showed that compound 32 exhibits modest oral bioavailability (12%). Furthermore 32 has an excellent selectivity profile notably showing no significant inhibition of phosphodiesterases or nitric oxide synthases.