Reaction scheme for total synthesis of the natural product Verrucarol (partial)

Total synthesis of Verrucarol (partial):

Reference:	Roush, W. R.; D'Ambra, T. E. J. Org. Chem. 1981, 46, 5045. DOI
Keywords:	Ozonolysis • Selenoxide-E_i -> Ene • Diels-Alder, EnoateEster • Mechanism • Mitsunobu -> SeR • CompRed-CarboxEster/Epoxide+Al-H • CompNu-Alcohol/Alcohol+SeCN • Baeyer-Villiger • Lactone-6 • Epoxidation, peracid • Wagner-Meerwein • Mechanism •
Reagents:	Selenocyanate, o-nitrophenyl • PBu₃ • Perbenzoic acid, 3-chloro • BF₃·OEt₂ • AlH(OMe)₃^-Li⁺ • Li°/H₂NCH₂CH₂NH₂ • O₃ • Me₂S • Perbenzoic acid, 3-chloro • Perbenzoic acid, 3,5-dinitro •