1Yong Ying JIANG2,Zhi Yun LIN,Li Ya ZHU1 (1Dept. Of medicinal chemistry, College of pharmacy, Rutgers University, Piscataway, NJ, U.S.A. Institute of Materia Medica, Peking Union Medical College and) Chinese Academy of Medical Sciences, Beijing 100050.Synthesis of Z and E-(2',5'-dimethoxyphenyl)-methylene-butyrolactones[J].Chinese Chemical Letters,2000,11(2):109-110.