Grunewald Gary L, Romero F Anthony, Chieu Alex D, Fincham Kelcie J, Bhat Seema R, Criscione Kevin R
Department of Medicinal Chemistry, School of Pharmacy, Malott Hall, Room 4060, University of Kansas, 1251 Wescoe Hall Dr., Lawrence, KS 66045-7582, USA.
Bioorg Med Chem. 2005 Feb 15;13(4):1261-73. doi: 10.1016/j.bmc.2004.11.015.
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 alpha2-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 alpha2-adrenoceptor) is 3-alkyl-7-aminosulfonyl-THIQs congruent with 3-alkyl-7-N-2,2,2-trifluoroethylaminosulfonyl-THIQs>3-alkyl-7-nitro-THIQs>3-alkyl-7-bromo-THIQs.
合成了一系列3-烷基-7-取代的1,2,3,4-四氢异喹啉,并对这些化合物的去甲肾上腺素甲基转移酶(PNMT)抑制活性以及对α2-肾上腺素能受体的亲和力进行了评估。具有比甲基长的3-烷基取代基的7-硝基、7-溴、7-氨基磺酰基或7-N-2,2,2-三氟乙基氨基磺酰基-四氢异喹啉(THIQs)显示出去甲肾上腺素甲基转移酶(PNMT)抑制活性降低,但3-丙基-7-氨基磺酰基-四氢异喹啉(THIQ)除外,其显示出优异的去甲肾上腺素甲基转移酶(PNMT)抑制活性。选择性(去甲肾上腺素甲基转移酶(PNMT)与α2-肾上腺素能受体)的排序为:3-烷基-7-氨基磺酰基-四氢异喹啉(THIQs)与3-烷基-7-N-2,2,2-三氟乙基氨基磺酰基-四氢异喹啉(THIQs)相当>3-烷基-7-硝基-四氢异喹啉(THIQs)>3-烷基-7-溴-四氢异喹啉(THIQs)。