Ma Nianchun, Wu Kemei, Huang Liang
Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
Eur J Med Chem. 2008 Apr;43(4):893-6. doi: 10.1016/j.ejmech.2007.05.010. Epub 2007 Jun 3.
Zetaclausenamide, which was isolated as a hepatoprotective agent from the leaves of medicinal plant Clausena lansium, was synthesized for the first time in six steps including Darzen's condensation, photoisomerization, and the final cyclization reactions.