A single-step synthesis of ayapin, limnmettin, scoparone, leptodactylone, fraxinol, isoscopoletin, 5,6,7- trimethoxy cournarin and 7-methoxy-8-hydroxy coumarin

摘要

A single-step synthesis of eight natural coumarins, namely, ayapin, litmmetin, scoparone. leptodactylone, fraxinol, isoscopoletin, 5 ,6 ,7-trimethoxy coumarin and 7-methoxy-H-hydroxy coumarin is being reported. The method involves the transfer of C-3 unit