(4R,5R,8R,9S)-8-(tert-butyldiphenylsilyloxymethyl)-9-hydroxy-2,2-dimethyl-6-oxo-4-(2-trimethylsilylethoxymethoxymethyl)-1,3,7-trioxa-spiro[4.4]nonane-9-[(tert-butyldiphenylsilyloxy)carbaldehyde oxime]
(2R,3S,4R,1'R)-2-(tert-butyldiphenylsilyloxymethyl)-3,4-dihydroxy-4-[1'-hydroxy-2'-(2-trimethylsilylethoxymethoxy)ethyl]-5-oxotetrahydrofuran-3-[(tert-butyldiphenylsilyloxy)carbaldehyde oxime]
(2R,3S,4R,1'R)-2-(tert-butyldiphenylsilyloxymethyl)-4-(2,2-dimethyl-[1,3]dioxolan-4-yl)-3,4-dihydroxy-5-oxotetrahydrofuran-3-[(tert-butyldiphenylsilyloxy)carbaldehyde oxime]
(2R,3S,4R,1'R)-2-(tert-butyldiphenylsilyloxymethyl)-4-(1,2-dihydroxyethyl)-3,4-dihydroxy-5-oxotetrahydrofuran-3-[(tert-butyldiphenylsilyloxy)carbaldehyde oxime]