顺,顺-已二烯二酸

methyl (2S,3R)-5-t-butyldimethylsilyloxy-2-hydroxy-3-methyl-pentanoate

2-(trimethylsilyl)ethyl [2,5-dihydro-5-oxo-2-furan]acetate

(2S,3R)-5[((tert-butyl)dimetylsilyl)oxy]-3-methyl-2[(tetrahydro-2H-pyranyl)oxy]pentanoic acid