8H-1,3-Dioxolo[4,5-g][1,3]benzodioxin-4-ol,hexahydro-2,2,6,6-tetramethyl-, acetate, (3aa,4a,4ab,8ab,9aa)-(±)-

dimethyl (1S,2R,5S)-5-tert-butyldimethylsilyloxy-2-hydroxy-3-cyclohexene-1,2-dicarboxylate

(1S,4S,6R)-4-tert-butyldimethylsilyloxy-6-hydroxymethyl-2-cyclohexenol