Four novel furanocembranoids (1-4) were isolated from the stem bark of Croton oblongifolius. Their structures were elucidated on the basis of spectroscopic analysis, mainly NMR and MS. Compounds 1, 3, and 4 exhibited good cytotoxicity against several human tumor cell lines.
Research Centre for Bioorganic Chemistry, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand. Khanitha.P@chula.ac.th
