(3aS,5R,6aR,7S,8R,10S,10aS)-8,10-Diacetoxy-7-acetoxymethyl-5-hydroxy-4-methylene-3-oxo-decahydro-2-oxa-cyclopenta[d]naphthalene-7-carboxylic acid methyl ester

methyl (1'S,5'R,5a'S,5a1'R,7a'R,8'R,10'S,10a'S)-8'-acetoxy-10'-(acetoxymethyl)-9'-oxo-10a'-(((2-(trimethylsilyl)ethoxy)methoxy)methyl)hexahydro-1'H,5'H-spiro[cyclohexane-1,3'-[1,5]methano[1,3]dioxocino[5,6,7-cd]benzofuran]-5a'(6'H)-carboxylate

methyl (1'S,5'R,5a'S,5a1'R,7a'R,8'S,10'S,10a'R)-8'-acetoxy-10'-(acetoxymethyl)-9'-methylene-10a'-(((2-(trimethylsilyl)ethoxy)methoxy)methyl)hexahydro-1'H,5'H-spiro[cyclohexane-1,3'-[1,5]methano[1,3]dioxocino[5,6,7-cd]benzofuran]-5a'(6'H)-carboxylate

methyl (1'S,5'R,6'S,6a'R,9'R,10'S,10a'S)-6'-(((tert-butyldimethylsilyl)oxy)methyl)-9'-hydroxy-10'-(hydroxymethyl)-10a'-(((2-(trimethylsilyl)ethoxy)methoxy)methyl)octahydro-1'H-spiro[cyclohexane-1,3'-[1,5]methanobenzo[e][1,3]dioxocine]-6'-carboxylate

(1S,2R,4S,4aS,5S,6R,8aR)-2,4-Diacetoxy-1-acetoxymethyl-6-hydroxy-5-triethylsilanyloxymethyl-4a-(2-trimethylsilanyl-ethoxymethoxymethyl)-decahydro-naphthalene-1-carboxylic acid methyl ester