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

Total synthesis of Peduncularine (partial):

Reference:	Washburn, D. G.; Heidebrecht, R. W.; Martin, S. F. Org. Lett. 2003, 5, 3523. DOI
Keywords:	CarboxAmide -> Imine • Lactam enolate+Alkyl-X • Mg-Vinyl+Imine • Imonium+Mg-R • RCM -> Ring-C •
Reagents:	BH₄^-Na⁺ • HCl • Sulfinic acid, benzene • Chloride, calcium • Vinyl-MgX • Vinyl-ZnX • LiNⁱPr₂ • Allyl-Br • Grubbs II • H₂SO₄ •