4-{[[(4-chlorophenyl)sulfonyl](4-fluoro benzyl)amino]methyl}benzoic acid 、 Methyl 4-{[(4-chloro-benzenesulfonyl)-pyridin-2-ylmethyl-amino]-methyl}-2-fluoro-benzoate 以the title compound was obtained as white solid in 89% yield的产率得到4-{[(4-chlorobenzenesulfonyl)pyridin-2-ylmethylamino]methyl}-2-fluorobenzoic acid