2-Bromomethyl-benzoic acid (2S,3R,4S,5R,6R)-4,5-bis-benzyloxy-6-benzyloxymethyl-2-ethylsulfanyl-tetrahydro-pyran-3-yl ester

(2R,3R,4S,4aR,12aS,13R,14S,16R,16aR,17aR)-3,4,13-tris(benzyloxy)-2,16-bis((benzyloxy)methyl)-14-methoxy-3,4,4a,12a,13,16,16a,17a-octahydro-2H,14H-benzo[i]dipyrano[3,2-b:3',4'-e][1,4,7]trioxacycloundecin-6(11H)-one

2-((2S,3R,4S,5R,6R)-3-Benzyloxy-6-benzyloxymethyl-5-hydroxy-2-methoxy-tetrahydro-pyran-4-yloxymethyl)-benzoic acid (2S,3R,4S,5R,6R)-4,5-bis-benzyloxy-6-benzyloxymethyl-2-ethylsulfanyl-tetrahydro-pyran-3-yl ester