Total Syntheses

Reaction scheme for total synthesis of the natural product Methylenomycin B (Thebtaranonth)
Total synthesis of Methylenomycin B (Thebtaranonth):
Reference:Siwapinyoyos, T.; Thebtaranonth, Y. J. Org. Chem. 1982, 47, 598. DOI
Reactions:CarboxEster enolate+Alkyl-X • Alkyl-X+Enolate • Retro-Diels-Alder → Enone • Enone enolate+Alkyl-X • Alkyl-X+Enolate • Li-Allyl+CarboxEster • CarboxEster+Li-R → Ketone • Baldwin rules • Cyclopentenone •
Reagents:LiNiPr2 • LiNiPr2 • LiNiPr2, HMPA • MeI • HMPA (solvent) •