Exploring the active site of phenylethanolamine N-methyltransferase: 3-alkyl-7-substituted-1,2,3,4-tetrahydroisoquinoline inhibitors
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.
Exploring the active site of phenylethanolamine N-methyltransferase: 3-alkyl-7-substituted-1,2,3,4-tetrahydroisoquinoline inhibitors
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.
Cobalt(III)-Catalyzed Regio- and Chemoselective [4 + 2]-Annulation of <i>N</i>-Chlorobenzamides/Acrylamides with 1,3-Dienes at Room Temperature
作者:Balu Ramesh、Masilamani Jeganmohan
DOI:10.1021/acs.joc.2c00072
日期:2022.5.6
Co(III)-catalyzed regio- and chemoselective redox-neutral C–H annulation of arylamides/acrylamides with 1,3-dienes is described. The present annulation reaction was well suited with a less-reactive 1,3-butadiene. By employing this protocol, pharmaceutically important 3,4-dihydroisoquinolinones were synthesized in good yields. Furthermore, the prepared 3,4-dihydroisoquinolinones were converted into