Conformational restrictions: Based on the pharmacophore model for 5-HT(6) receptor ligands (shown), tryptamine analogues bearing a cyclopropyl ring on the α-position of the tryptamine side chain were synthesized and evaluated against 5-HT receptors. N,N-Dimethyl-1-arylsulfonyltryptamine derivatives exhibited promising selectivity for 5-HT(6) over 5-HT(1a) and 5-HT(4) receptors and interesting activity against 5-HT(6) (K(i) =∼0.15 μM; IC(50) =∼0.20 μM).
3-Cyanomethyl-2-vinylindoles as thermal indole-2,3-quinodimethane equivalents: synthesis of functionalized 1,2,3,4-tetrahydrocarbazoles
作者:Marie Laronze、Janos Sapi
DOI:10.1016/s0040-4039(02)01907-x
日期:2002.10
Electron-donating substituted 3-cyanomethyl-2-vinylindoles were found to rearrange via thermal [1,5]H shift into the corresponding indole-2,3-quinodimethanes which were trapped by dienophiles to afford tetrahydrocarbazoles. (C) 2002 Elsevier Science Ltd. All rights reserved.