Patent ID: 6133453
Filing Date: 2000-10-17
Classification: C07D

Abstract:
A method of preparing a fused polycyclic nitrogen-containing heteroaromatic compound represented by the following structural formula: ##STR12## or a physiologically acceptable salt thereof, wherein: R.sup.1 is --H, an aliphatic group, a substituted aliphatic group, an aryl group or a substituted aryl group;R.sup.2 is a substituted or unsubstituted 2-hydroxy-1-ethyl group;ring A is a substituted or unsubstituted aryl group; andring B is substituted or unsubstituted at position two;said method comprising the step of reacting a substituted or unsubstituted 2,3-dihydrofuran with a salt of an aryl hydrazine, wherein the aryl hydrazine is represented by the structural formula: ##STR13## thereby forming said fused polycyclic nitrogen-containing heteroaromatic compound.