Phytoihemu,tr\ Vol 12 No 4 pp 1076 1077 1993 Printed in Great Britain 0031 9422/93 $600+000 ^ 1993 Pergamon Press Ltd REVISED STRUCTURE OF A NATURAL FLAVONE FROM AGERATUM CONYZOIDES TOKLNARU HORIfc, HIDEAKI TOMINAGA and YASUHIKO KAWAMURA Department of Chemical Science and Technology, Faculty of Engineering, The University of Tokushima, MinamiJosanJima-cho, Tokushima 770. Japan {Received 25 November ...