A nimesulide derivative with potential anti-inflammatory activity: Synthesis, X-ray powder structure analysis and DFT study
作者:Abir Bhattacharya、Kavitha Kankanala、Sarbani Pal、Alok K. Mukherjee
DOI:10.1016/j.molstruc.2010.03.075
日期:2010.6
A nimesulide derivative, N-[4-(2,5-dioxo-2,5-dihydropyrrol-1-yl)-2-phenoxyphenyl]methanesulfonamide (2), was synthesized and its crystal structure has been determined from X-ray powder diffraction data following direct-space global optimization technique and refined by the Rietveld method. The molecular geometry and electronic structure of the title compound were calculated at the OFT level using the hybrid exchange-correlation functional, BLYP. The optimized molecular geometry of 2 corresponds closely to that obtained from the X-ray structure analysis. Intermolecular N-H center dot center dot center dot O and C-H center dot center dot center dot O hydrogen bonds in 2 form one-dimensional polymeric chains of R-2(2)(8) rings propagating along the [1 0 0] direction. Further linking between parallel chains via C-H center dot center dot center dot pi (arene) hydrogen bonds generates a two-dimensional supramolecular assembly in the (1 1 0) plane. The title compound exhibits potential anti-inflammatory activity and can induce 64% edema inhibition in rat paws. (C) 2010 Elsevier B.V. All rights reserved.
Lewis acid free high speed synthesis of nimesulide-based novel N-substituted cyclic imides
作者:Kavitha Kankanala、Vangala Ranga Reddy、Khagga Mukkanti、Sarbani Pal
DOI:10.1590/s0103-50532010000600015
日期:——
The first synthesis of nimesulide-based novel cyclic imides has been accomplished via the reaction of an amine prepared from nimesulide with appropriate anhydrides in the presence of sodium acetate. Using this process a variety of N-substituted cyclic imides was prepared in good yields in glacial acetic acid. Some of the compounds synthesized showed anti-inflammatory activities when tested in vivo.