1,3-Dimethyl-7-substituted-1,2,3,4-tetrahydroisoquinolines as probes for the binding orientation of tetrahydroisoquinoline at the active site of phenylethanolamine N-methyltransferase[1]
作者:Gary L. Grunewald、Timothy M. Caldwell、Qifang Li、Kevin R. Criscione
DOI:10.1016/s0968-0896(99)00031-0
日期:1999.5
in the biosynthesis of Epi, phenylethanolamine N-methyltransferase (PNMT; EC 2.1.1.28). 1,2,3,4-Tetrahydroisoquinolines (THIQs) are inhibitors of this enzyme, but also display affinity for the alpha2-adrenoceptor. To gain further understanding about how THIQs bind at the PNMT active site and in an attempt to further increase the selectivity of THIQ-type inhibitors versus the alpha2-adrenoceptor, a series
为了确定肾上腺素(Epi)在中枢神经系统中的功能,我们针对了催化Epi的生物合成最后一步的酶,即苯乙醇胺N-甲基转移酶(PNMT; EC 2.1.1.28)。1,2,3,4-四氢异喹啉(THIQs)是该酶的抑制剂,但对α2-肾上腺素受体也表现出亲和力。为了进一步了解THIQs在PNMT活性位点上的结合方式,并试图进一步提高THIQ型抑制剂相对于α2-肾上腺素受体的选择性,一系列顺式和反式1,3-二甲基-7取代-THIQ合成。对这些化合物的评估表明,基于7位取代基的亲脂性,THIQs在PNMT活性位点以两种不同的方向结合。然而,