Friedel-Crafts acylation with N-(trifluoroacetyl)-.alpha.-amino acid chlorides. Application to the preparation of .beta.-arylalkylamines and 3-substituted 1,2,3,4-tetrahydroisoquinolines
the first time by X‐ray structural analysis. The ortho‐methoxymethyl group and the carbonyl oxygen coordinate to the iodine atom of the iminoiodinane. Activation of the N‐acyliminoiodinane was achieved by photoirradiation at 370 nm, thereby enabling reaction with various silylenol ethers to give α‐aminoketone derivatives in good to high yield. N‐sulfonyliminoiodinanes bearing ortho substituents were
MAO inhibition by arylisopropylamines: the effect of oxygen substituents at the β-position
作者:Mauricio Osorio-Olivares、Marcos Caroli Rezende、Silvia Sepúlveda-Boza、Bruce K Cassels、Angélica Fierro
DOI:10.1016/j.bmc.2004.05.033
日期:2004.8.1
Twenty-nine arylisopropylamines, substituted at the beta-position of their side chain by an oxo, hydroxy, or methoxy group, were evaluated in vitro as MAO-A and MAO-B inhibitors. The oxo derivatives ('cathinones') were in general less active as MAO-A inhibitors than the corresponding arylisopropylamines, but exhibited an interesting MAO-13 inhibiting activity, which was absent in the hydroxy, methoxy, and beta-unsubstituted analogues. These results suggest that selective affinity for the two MAO isoforms in this family of compounds is modulated not only by the aryl substitution pattern but also by the side-chain substituents on the aryl-alkylamine scaffold. (C) 2004 Elsevier Ltd. All rights reserved.
5-Aryl-imidazolin-2-ones as a scaffold for potent antioxidant and memory-improving activity
A series of 5-phenyl-substituted-N-alkyl-imidazolin-2-ones with potent radical-scavenging activity and lipid peroxidation inhibitory activity was synthesized. Many of the compounds showed memory-improving effect in animal models independent of the inhibitory activity on lipid peroxidation. (c) 2008 Elsevier Ltd. All rights reserved.
NORDLANDER, J. E.;PAYNE, M. J.;NJOROGE, F. G.;BALK, M. A.;LAIKOS, G. D.;V+, J. ORG. CHEM., 1984, 49, N 22, 4107-4111
作者:NORDLANDER, J. E.、PAYNE, M. J.、NJOROGE, F. G.、BALK, M. A.、LAIKOS, G. D.、V+
DOI:——
日期:——
Friedel-Crafts acylation with N-(trifluoroacetyl)-.alpha.-amino acid chlorides. Application to the preparation of .beta.-arylalkylamines and 3-substituted 1,2,3,4-tetrahydroisoquinolines
作者:J. Eric Nordlander、Mark J. Payne、F. George Njoroge、Michael A. Balk、George D. Laikos、Vasanth M. Vishwanath