1-Alkyl-2-aryl-4-(1-naphthoyl)pyrroles: New high affinity ligands for the cannabinoid CB1 and CB2 receptors
摘要:
Two series of 1-alkyl-2-aryl-4-(1-naphthoyl)pyrroles were synthesized and their affinities for the cannabinoid CB, and CB2 receptors were determined. In the 2-phenyl series (5) the N-alkyl group was varied from n-propyl to n-heptyl. A second series of 23 1-pentyl-2-aryl-4-(1-naphthoyl)-pyrroles (6) was also prepared. Several compounds in both series have CB, receptor affinities in the 6-30 nM range. The high affinities of these pyrrole derivatives relative to JWH-030 (1,R = C5H11) support the hypothesis that these pyrroles interact with the CB, receptor primarily by aromatic stacking. (c) 2006 Elsevier Ltd. All rights reserved.
1-Alkyl-2-aryl-4-(1-naphthoyl)pyrroles: New high affinity ligands for the cannabinoid CB1 and CB2 receptors
摘要:
Two series of 1-alkyl-2-aryl-4-(1-naphthoyl)pyrroles were synthesized and their affinities for the cannabinoid CB, and CB2 receptors were determined. In the 2-phenyl series (5) the N-alkyl group was varied from n-propyl to n-heptyl. A second series of 23 1-pentyl-2-aryl-4-(1-naphthoyl)-pyrroles (6) was also prepared. Several compounds in both series have CB, receptor affinities in the 6-30 nM range. The high affinities of these pyrrole derivatives relative to JWH-030 (1,R = C5H11) support the hypothesis that these pyrroles interact with the CB, receptor primarily by aromatic stacking. (c) 2006 Elsevier Ltd. All rights reserved.
Acylation of N-p-toluenesulfonylpyrrole under Friedel–Crafts conditions: evidence for organoaluminum intermediates
作者:John W. Huffman、Valerie J. Smith、Lea W. Padgett
DOI:10.1016/j.tet.2007.12.043
日期:2008.2
The Friedel-Craftsacylation of N-p-toluenesulfonylpyrrole under Friedel-Crafts conditions has been reinvestigated. Evidence is presented in support of the hypothesis that when AlCl(3) is used as the Lewis acid, acylation proceeds via reaction of an organoaluminum intermediate with the acyl halide. This leads to the production of the 3-acyl derivative as the major product. With weaker Lewis acids (EtAlCl(2)