1-benzyloxy-2-(tert-butyl-dimethyl-silanyloxy)-9-(2,2-dimethyl-[1,3]dioxolan-4-yl)-9-(4-methoxy-benzyloxy)-non-5-yn-3-ol

methanesulfonic acid 1-[2-benzyloxy-1-(tert-butyl-dimethyl-silanyloxy)-ethyl]-7-(2,2-dimethyl-[1,3]dioxolan-4-yl)-7-(4-methoxy-benzyloxy)-hept-3-ynyl ester

3,5-bis-trifluoromethyl-benzenesulfonic acid 9-(2-benzyloxy-ethyl)-8-(tert-butyl-dimethyl-silanyloxy)-3-(4-methoxy-benzyloxy)-2,3,4,7,8,9-hexahydro-oxonin-2-ylmethyl ester