Exploring the active site of phenylethanolamine N-methyltransferase:: 3-alkyl-7-substituted-1,2,3,4-tetrahydroisoquinoline inhibitors

被引:9
作者
Grunewald, GL [1 ]
Romero, FA [1 ]
Chieu, AD [1 ]
Fincham, KJ [1 ]
Bhat, SR [1 ]
Criscione, KR [1 ]
机构
[1] Univ Kansas, Dept Med Chem, Sch Pharm, Lawrence, KS 66045 USA
关键词
phenylethanolamine N-methyltransferase; enzyme inhibitors; tetrahydroisoquinolines; structure-based design;
D O I
10.1016/j.bmc.2004.11.015
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
A series of 3 -alkyl-7 -substituted-1,2,3,4-tetrahydroisoquinolines was synthesized and these compounds were evaluated for their PNMT inhibitory potency and affinity for the (alpha(2)-adrenoceptor. 7-Nitro-, 7-bromo-, 7-aminosulfonyl-, or 7-N-2,2,2-trifluoroethylaminosulfonyl-THIQs that possess a 3-alkyl substituent that is longer than a methyl group showed decreased PNMT inhibitory potency, except for 3-propyl-7-aminosulfonyl-THIQ, which displayed excellent PNMT inhibitory potency. The rank order for selectivity (PNMT vs the alpha(2)-adrenoceptor) is 3 -alkyl -7 -aminosulfonyl-THIQs congruent to 3-alkyl-7-N-2,2,2-trifluoroethylaminosulfonyl-THIQs > 3-alkyl-7-nitro-THlQs > 3-alkyl-7-bromo-THIQs. (C) 2004 Elsevier Ltd. All rights reserved.
引用
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页码:1261 / 1273
页数:13
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