作者:Hideji Itokawa、Etsuko Kishi、Hiroshi Morita、Koichi Takeya、Yoichi Iitaka                                    
                                    
                                        DOI:10.1016/s0040-4039(00)74334-6
                                    
                                    
                                        日期:1991.4
                                    
                                    Structure of a new cytotoxic squalene-type triterpene, named eurylene, from Eurycoma longifolia was elucidated by spectroscopic data, chemical evidence and X-ray analysis.  The absolute stereostructure was determined by an advanced Mosher's method.