Aim To investigate the NMR spectroscopy of amlodipine and risperidone.Methods 1D NMR and 2D NMR experimental techniques of gCOSY, gHSQC and gHMBC were wsed. Results Theassignments of the ~1H and ^(13) C NMR data for t...Aim To investigate the NMR spectroscopy of amlodipine and risperidone.Methods 1D NMR and 2D NMR experimental techniques of gCOSY, gHSQC and gHMBC were wsed. Results Theassignments of the ~1H and ^(13) C NMR data for the two drugs were performed and confirmed by theevidence of J_(HF) and J_(CF). Conclusion The structures of amlodipine and risperidone wereconfirmed by careful analysis of regular 1D and 2D NMR spectroscopy.展开更多
It is of interest in an era of increasing biomedical sophisticaton to recall that a relatively short time ago, early in the 20th century, ‘simple' ulcerative colitis was an obscure ‘medical curiosity' emergi...It is of interest in an era of increasing biomedical sophisticaton to recall that a relatively short time ago, early in the 20th century, ‘simple' ulcerative colitis was an obscure ‘medical curiosity' emerging slowly from an unknown past. Crohn's disease was yet unidentified as a separate entity although careful review of the IBD literature documented its early presence, masquerading as ‘intestinal tuberculosis'. Into the 1930s, the etiology and pathogenesis of ulcerative colitis and Crohn's disease were unknown, and investigative hypotheses were scarce. Therapeutic resources were limited and treatment was primitive. At a time of limited biomedical knowledge and minimal clinical awareness, unsubstantiated views prevailed, including ‘vague reactions to foods' (sugar,margarine, corn flakes), deficiency of a ‘protective factor'in pig intestine, and psychiatric disease.展开更多
文摘Aim To investigate the NMR spectroscopy of amlodipine and risperidone.Methods 1D NMR and 2D NMR experimental techniques of gCOSY, gHSQC and gHMBC were wsed. Results Theassignments of the ~1H and ^(13) C NMR data for the two drugs were performed and confirmed by theevidence of J_(HF) and J_(CF). Conclusion The structures of amlodipine and risperidone wereconfirmed by careful analysis of regular 1D and 2D NMR spectroscopy.
文摘It is of interest in an era of increasing biomedical sophisticaton to recall that a relatively short time ago, early in the 20th century, ‘simple' ulcerative colitis was an obscure ‘medical curiosity' emerging slowly from an unknown past. Crohn's disease was yet unidentified as a separate entity although careful review of the IBD literature documented its early presence, masquerading as ‘intestinal tuberculosis'. Into the 1930s, the etiology and pathogenesis of ulcerative colitis and Crohn's disease were unknown, and investigative hypotheses were scarce. Therapeutic resources were limited and treatment was primitive. At a time of limited biomedical knowledge and minimal clinical awareness, unsubstantiated views prevailed, including ‘vague reactions to foods' (sugar,margarine, corn flakes), deficiency of a ‘protective factor'in pig intestine, and psychiatric disease.
