(E)-5-(tert-Butyl-diphenyl-silanyloxy)-2-methoxymethoxy-pent-2-enoic acid methyl ester

2-((E)-5-Benzoyloxy-2-methoxymethoxy-pent-2-enyl)-malonic acid di-tert-butyl ester

(E)-2-((2Z,4E)-6-Acetoxy-2-methyl-hexa-2,4-dienyl)-2-tert-butoxycarbonyl-8-methoxycarbonyl-4-methoxymethoxy-non-4-enedioic acid 1-tert-butyl ester 9-methyl ester