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.
Highly Regioselective Nickel-Catalyzed Cross-Coupling of <i>N</i>-Tosylaziridines and Alkylzinc Reagents
作者:Kim L. Jensen、Eric A. Standley、Timothy F. Jamison
DOI:10.1021/ja505823s
日期:2014.8.6
ligand-controlled, nickel-catalyzed cross-coupling of aliphatic N-tosylaziridines with aliphatic organozinc reagents. The reaction protocol displays complete regioselectivity for reaction at the less hindered C-N bond, and the products are furnished in good to excellent yield for a broad selection of substrates. Moreover, we have developed an air-stablenickel(II) chloride/ligand precatalyst that can be handled and
It is intended to provide antipruritics (drugs to control itching, antiitch agents and drugs to stop itching). It is found out that a compound having an agonistic activity to the cannabinoid receptor shows an antipruritics effect.
The present invention relates to 2-imino-1,3-thiazine derivatives, in specific, 2-imino-1,3-thiazine derivatives having a selective antagonistic activity or agonistic activity to a cannabinoid type 2 receptor and their pharmaceutical use.
A compound of the formula (I) having a binding activity to the cannabinoid type 2 receptor:
1
wherein R
1
is optionally substituted heterocyclic group or the like; R
2
and R
2
each is independently hydrogen or the like; m is an integer of 0 to 2; A is optionally substituted aromatic carbocyclic group or the like.
The present invention relates to 2-imino-1,3-thiazine derivatives, in specific, 2-imino-1,3-thiazine derivatives having a selective antagonistic activity or agonistic activity to a cannabinoid type 2 receptor and their pharmaceutical use.