(2S,5S,7S,1''S)-(+)-7-{2''-(tert-butyldiphenylsilyloxy)-1''-methylethyl}-2-hydroxymethyl-1,6-dioxaspiro[4.5]decane

(1'E,2S,5R,7S,1''S)-(+)-7-{2''-(tert-butyldiphenylsilyloxy)-1''-methylethyl}-2-(3'-hydroxy-1'-propenyl)-1,6-dioxaspiro[4.5]decane