(4R,5S)-4-(tert-Butyl-diphenyl-silanyloxy)-5-ethyl-tetrahydro-furan-2-ol

(4R,5S)-5-ethyl-4-hydroxydihydrofuran-2(3H)-one

(Z,2S,4aS,6S,7R,11aR)-7-tert-butyldiphenylsilanyloxy-6-ethyl-2-(4-methoxyphenyl)-4a,6,7,8,11,11a-hexahydro-4H-1,3,5-trioxabenzocyclononene

(Z,2S,3R,8R,9S)-8-tert-butyldiphenylsilanyloxy-9-ethyl-2-hydroxymethyl-3-(4-methoxybenzyloxy)-2,3,4,7,8,9-hexahydrooxonine