title: Total synthesis of (±)-przewalskin B.
abstract: A concise total synthesis of przewalskin B was accomplished from readily available diene 7. Key features of the synthesis involved a Diels-Alder reaction to install the A ring, a Claisen-Johnson rearrangement to establish the spiro-quaternary center, and a ring-closing metathesis (RCM) of a sterically crowded system to construct the cyclic enone moiety.
authors.affiliation: State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University , Lanzhou 730000, P. R. China.
authors.forename: Mingxing
authors.initials: M
authors.lastname: Xiao
authors.forename: Lin
authors.initials: L
authors.lastname: Wei
authors.forename: Liqi
authors.initials: L
authors.lastname: Li
authors.forename: Zhixiang
authors.initials: Z
authors.lastname: Xie
mesh_terms: D003500:Cyclization; D061565:Cycloaddition Reaction; D004224:Diterpenes / Q000138:chemical synthesis* / Q000737:chemistry; D013237:Stereoisomerism
chemical_list: D004224:Diterpenes; C518012:Przewalskin B