Lu Hejun, Silverman Richard B
Department of Chemistry, Center for Drug Discovery and Chemical Biology, Northwestern University, Evanston, Illinois 60208-3113, USA.
J Med Chem. 2006 Dec 14;49(25):7404-12. doi: 10.1021/jm0608715.
On the basis of the structures of several potent inhibitor molecules for gamma-aminobutryric acid aminotransferase (GABA-AT) that were previously reported, six modified fluorine-containing conformationally restricted analogues were designed, synthesized, and tested as GABA-AT inhibitors. The syntheses of all six molecules followed from a readily synthesized ketone intermediate. Three of the molecules were found to be irreversible inhibitors of GABA-AT with comparable or larger k(inact)/K(I) values than that of vigabatrin, a clinically used antiepilepsy drug, and the other three were reversible inhibitors. A possible mechanism for inactivation by one of the inactivators is proposed.
基于先前报道的几种γ-氨基丁酸转氨酶(GABA-AT)强效抑制剂分子的结构,设计、合成了六种经修饰的含氟构象受限类似物,并将其作为GABA-AT抑制剂进行测试。所有六种分子均由一种易于合成的酮中间体合成。发现其中三种分子是GABA-AT的不可逆抑制剂,其k(inact)/K(I)值与临床使用的抗癫痫药物vigabatrin相当或更大,另外三种是可逆抑制剂。提出了其中一种失活剂失活的可能机制。