5-Amino-4-benzoyl-3-benzyloxy-benzoesaeure 、 5-amino-4-benzoyl-3-benzylthiobenzoic acid 、
3-Allylthio-5-amino-4-benzoyl-benzoesaeure 、 以5-acetamido-4-benzoyl-3-benzyloxybenzoic acid, 5-acetamido-4-benzoyl-3-benzylthiobenzoic acid, 5-acetamido-3-allylthio-4-benzoylbenzoic acid and 5-acetamido-4-benzoyl-3-(2-phenethyl) benzoic acid are obtained with melting points of 222.5°-223.5° C, 197.5°-198.5° C, 210°-211° C and 183°-184° C respectively的产率得到5-acetamido-4-benzoyl-3-benzyloxybenzoic acid