methyl 2-phenyl-4,5-dihydro-1,3-oxazole-4-carboxylate

L-丝氨酸甲酯盐酸盐

苯甲醛

(S)-(+)-4,5-二氢-2-苯基-4-噁唑羧酸甲酯

Bz-L-Ser-OMe