(1R,3S,4R,5R)-methyl 1-acetoxy-5-((tert-butyldimethylsilyl)oxy)-3,4-dihydroxy-2-oxocyclohexanecarboxylate

(-)-3-去氢莽草酸

右旋奎宁酸

methyl (benzyl 5,6-dideoxy-6-dimethoxyphosphoryl-2,3-O-isopropylidene-α-D-lyxo-heptofuranosid)uronate

methyl (1α,6α)-2β-hydroxy-7-oxabicyclo[4.1.0]hept-3-ene-4-carboxylate