5-<(4S,6S)-2,2,6-Trimethyl-1,3-dioxan-4-yl>-2-pentanon

benzoic acid 2-[2,2-dimethyl-5-(2-methyl-but-1-en-3-ynyl)[1,3]dioxolan-4-yl]-1-methyl-ethyl ester

benzoic acid 2-(2,2-dimethyl-5-prop-1-ynyl-[1,3]dioxolan-4-yl)-1-methyl-ethyl ester

6-O-benzoyl-1,1-dibromo-5,7-dideoxy-3,4-O-isopropyliden-L-arabino-hept-1-ene

benzoic acid 2-[5-(2-iodo-propenyl)-2,2-dimethyl-[1,3]dioxolan-4-yl]-1-methyl-ethyl ester