甲醇

tert-butyl ((2S,3R,4S)-3-hydroxy-2-methyl-6-oxotetrahydro-2H-pyran-4-yl)carbamate

tert-butyl ((2R,3S)-2-((S)-1-hydroxyethyl)-5-oxotetrahydrofuran-3-yl)carbamate

山梨酸

山梨酸甲酯