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Total synthesis of Ptaquilosin:
Reference: Kigoshi, H.; Imamura, Y.; Niwa, H.; Yamada, K. J. Am. Chem. Soc. 1989, 111, 2302. DOI
Keywords: CarboxEster → CarboxAcid • CarboxAcid → CarboxCl • CarboxEster → Alkyl-OH • Allyl-OH → Enone • O-H → O-SiMe2tBu • Alkene isomerization • Ketone → Ketone-α-SeR • Alkyl-OH → Ketone • Ketone → EnolSilane • EnolSilane → Ketone enolate • Alkyl-OH → Aldehyde • O-SiMe2tBu → O-H • Friedel-Crafts Acylation, Ene • Ketone enolate+Me-I • Selenoxide-Ei → Enone • Ketone → Enone • Enone enolate dialkylation, spiro • Deconjugative alkylation • CarboxEster enolate+Alkyl-X • Alkyl-X+Enolate • Enone epoxidation, nucleophilic • Ketone+Mg-Alkyl • Mg-Alkyl+Ketone • Ketone → Ketone-α-SeR • Epoxide reduction • Decarbonylation • Hydroperoxide → Alcohol • Ketone epimerization • Cyclopropane •
Reagents: LiNiPr2 • Allyl-Cl • Diazomethane • Hydroxide, potassium • Oxalyl chloride • SnCl4 • AlH4-Li+ • Cr2O7·2ImH • SiMe2tBu-Cl • Ethylene dichloride • KOtBu • LiNiPr2 • H2O2 • H2O2, NaOH • Ca°/NH3 • MeMgI • DMSO, (COCl)2 (Swern) • LiNiPr2 • Fluoride, R4N+ • MeI • AlH4-Li+ • DMSO, (COCl)2 (Swern) • Fluoride, R4N+ • O2 • PPh3 • SePh-Cl • SiMe3-Cl • Imidazole • KOtBu •

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