Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Takeshi Sugai and Takahisa Ogamino and Shigeru Nishiyama and Fuminao Doi,Synthesis of Bioactive Sesquiterpene Heliannuol E Involving a Ring-Expansion Reaction of Spirodienones,Synlett,0936-5214,Georg Thieme Verlag KG,2003-01-01,,,0411-0413,https://cir.nii.ac.jp/crid/1872835442759041664,https://doi.org/10.1055/s-2003-37124