The reaction of two series of 2,3-dihydro-1,5-henzothiazepines Ⅰ with dichloro-carbene,gave azirino[2,1-d][1,5]benzothiazepines Ⅷ,azirino[2,1-e][1,6]benzothia
An improved procedure was used to prepare the asymmetric tripyrrane-containing macrocycles,The yield was over 85% These maerocycles could be oxidized to the met