(+-)-5t-methyl-2-phenyl-4,5-dihydro-oxazole-4r-carboxylic acid

O-叔丁基-L-苏氨酸叔丁酯

L-苏氨酸甲酯

O-methoxy-methylene-L-threonine

cyclo(L-Pro-L-Trp-L-Val-L-Pro-L-Leu-L-Ile-L-Pro-L-Ile)