Lee Yong Rok, Li Xin, Kim Jung Hee
School of Chemical Engineering and Technology, Yeungnam University, Gyeongsan, Korea.
J Org Chem. 2008 Jun 6;73(11):4313-6. doi: 10.1021/jo800367r. Epub 2008 Apr 29.
This paper describes a new and efficient synthetic approach for biologically interesting natural mallotophilippens C and E. The key strategies involved ethylenediamine diacetate-catalyzed benzopyran formation reactions and base-catalyzed aldol reactions.