ORGANIC CHEMISTRY Chapter 5 H OH CO,H HO HO H OH-H H NH CHCONH H OH D-Glucose D-Asparagine (+)-D-葡萄糖 D天门冬酰胺 D-form--sweet L-form--bitter Department of Chemistry, Xiamen UniversityORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 5 HO O H H HO H OH H OH H OH (+)-D-葡萄糖 CO2H H NH2 CH2CONH2 D-天门冬酰胺 D-Glucose D-Asparagine D-form—sweet L-form—bitter