Synthesis, spasmolytic activity and structure–activity relationship study of a series of polypharmacological thiobenzanilides
作者:Gerda Brunhofer、Christian Studenik、Gerhard F. Ecker、Thomas Erker
DOI:10.1016/j.ejps.2010.10.005
日期:2011.1
Recently we presented a series of benzanilide derivatives with a selective spasmolytic effect on terminal ileum preparations of the guinea pig. In this report we demonstrate a further development of these compounds. The exchange of the amide oxygen against a sulfur atom resulted in an up to 325 fold increase of the antispasmodic activity of the thiobenzanilide (IC50 of 0.1 mu M) compared to its benzanilide derivative. Considering their mode of action the compounds interacted with several molecular targets, suggesting that we identified a chemical identity able to modulate multiple targets simultaneously. Furthermore, based on this data set, we present a structure-activity relationship study supporting the important role of the sulfur atom. (C) 2010 Elsevier B.V. All rights reserved.
Preparation of amides mediated by isopropylmagnesium chloride under continuous flow conditions
作者:Juan de M. Muñoz、Jesús Alcázar、Antonio de la Hoz、Ángel Díaz-Ortiz、Sergio-A. Alonso de Diego
DOI:10.1039/c2gc35037h
日期:——
mediated by Grignard reagents (the Bodrouxreaction) is described. The procedure can be applied to a wide variety of primary and secondary amines and anilines, as well as to aromatic and aliphatic esters. The flow approach leads to improved yields and selectivities in the reaction, which has a sustainable purification procedure and a simple scale-up. This reaction represents an efficient and green alternative