RT Journal Article T1 Stereoselective Synthesis of Bisfuranoxide (Aurochrome, Auroxanthin) and Monofuranoxide (Equinenone 5′,8′-Epoxide) Carotenoids by Double Horner–Wadsworth–Emmons Reaction A1 Rivas Landin, Aurea A1 Castiñeira Reis, Marta A1 Álvarez Rodríguez, Maria Rosana A1 Vaz Araujo, Belén A1 Rodríguez de Lera, Ángel K1 2306.90 Química de Productos Naturales Orgánicos AB The stereoselective synthesis of C40-all-trans-carotenoids with the formal hexahydrobenzofuran skeletons aurochrome, auroxanthin, and equinenone-5′,8′-epoxide is reported. The synthesis is based on a one-pot or stepwise double Horner–Wadsworth–Emmons (HWE) reaction of a terminal enantiopure C15-5,6-epoxycyclohexadienylphosphonate and a central C10-trienedial. The ring expansion of the epoxycyclohexadienylphosphonate, generated by a Stille cross-coupling reaction, to the hexahydrobenzofuran skeleton was promoted by the reaction conditions of the HWE reaction prior to double-bond formation. PB Journal of Natural Products SN 01633864 YR 2022 FD 2022-10-28 LK http://hdl.handle.net/11093/4156 UL http://hdl.handle.net/11093/4156 LA eng NO Journal of Natural Products, 85(10): 2302-2311 (2022) NO Financiado para publicación en acceso aberto: Universidade de Vigo/CISUG NO Xunta de Galicia | Ref. ED-431G/02-FEDER DS Investigo RD 14-ene-2025