D-Fructose
2.Compound Ⅱis a new amino acid derivative. Its structure was characterized as 1-(arginine-N a-yl)-1-deoxy-4-O-(α-D-glucopyranosyl)-D-fructose, named AFG(argininyl- fructosyl-glucose,on the basis of chemical evidence and spectral analysis and semisynthesized from maltosewith arginine.The identification of compound Ⅲ,Ⅳ and V is in progress.
3.FBA catalyzes the reversible reaction that dihydroxyacetone phosphate and D-glyceraldehydes-3-phosphate are utilized to form fructose-6-phosphate. There are two branch points in Calvin cycle.

