Dibenzo-18-crown-6 modified with kojic acid fragments

摘要

Diazonium salts were prepared by diazotization of 4'-amino-, 4',4", and 4',5"-, diaminodibenzo-18-crown-6. Their coupling products with kojic acid (5-hydroxymethyl-gamma-pyrone) were synthesized for the first time: 4'-(6-aza-5-hydroxy-2-hydroxymethyl-gamma-pyronyl)-, 4',4"-di(6-aza-5-hydroxy-2-hydroxymethyl-gamma-pyronyl)-, and 4',5"-di-(6-aza-5-hydroxy-2-hydroxymethyl-gamma-pyronyl)-dibenzo-18-crown-6.