Hashimoto Takashi, Tashiro Takuya, Sasaki Mitsuru, Takikawa Hirosato
Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University, Rokkodai, Kobe, Japan.
Biosci Biotechnol Biochem. 2007 Aug;71(8):2046-51. doi: 10.1271/bbb.70283. Epub 2007 Aug 7.
A new and concise synthesis of (+/-)-sundiversifolide (1), an allelopathic bisnor-sesquiterpene lactone isolated from germinating sunflower (Helianthus annuus L.) seeds, was achieved by employing Lewis acid-mediated Claisen rearrangement as the key step.