5H-[1,2,4]Oxadiazolo[5,4-d][1,5]benzothiazepines: Synthesis and Stereochemistry
摘要:
The functionalization of the thiazepine system by 1,3-dipolar cycloaddition of benzonitriloxide to the C=N double bond of 1,5-benzothiazepine derivatives, is described. The configurational and conformational properties of the 3a,4-dihydro-1-phenyl-5H-[1,2,4]oxadiazolo[5,4-d][1,5]benzothiazepines have been determined by nmr spectroscopy assisted by NOE measurements.