Bibliografisk träff 2007-02-01 Origin of structural diversity in natural triterpenes: direct synthesis of seco-triterpene skeletons by oxidosqualene cyclase. Shibuya M, Xiang T, Katsube Y, Otsuka M, Zhang H, Ebizuka Y. J Am Chem Soc · research support, non-u.s. gov't; journal article · DOI 10.1021/ja066873w