2-((2R,3R,4Z)-6-tert-butyldimethylsilyloxy-3-ethyl-2-hydroxy-4-hexenyl)-2-((1R,2R,3S,5E)-2-methoxy-1,3-dimethyl-5-heptenyl)-1,3-dithiane

(2S,3R,4Z)-6-tert-butyldimethylsilyloxy-3-ethylhex-4-ene-1,2-diol

(2S,3R,4Z)-2,6-bis-tert-butyldimethylsilyloxy-3-ethyl-1-iodo-4-hexene

(2S,3R,4Z)-6-tert-butyldimethylsilyloxy-3-ethyl-1-p-toluenesulfonyloxy-4-hexene-2-ol

(2S,3R,4Z)-2,6-bis-tert-butyldimethylsilyloxy-3-ethyl-4-hexenyl p-toluenesulfonate