Greener and Expeditious Synthesis of 1,4-Disubstituted 1,2,3-Triazoles from Terminal Acetylenes and in situ Generated α-Azido Ketones
作者:Dalip Kumar、Gautam Patel、V. Reddy
DOI:10.1055/s-0028-1087556
日期:2009.2
A convenient and mild protocol for the one-pot regioselective synthesis of 1,4-disubstituted 1,2,3-triazoles in aqueous PEG 400 has been reported. The methodology involves the one-pot reaction ofa-bromo ketones, sodium azide, and terminal acetylenes catalyzed by Cu(I) in aqueous PEG 400 at room temperature. Prominent features of our approach are mild reaction conditions, use of readily available α-bromo
New thiazole nortopsentin analogs in which one of the two indole units was replaced by a naphthyl and/or 7-azaindolyl portion, were conveniently synthesized. Among these, three derivatives showed good antiproliferative activity, in particular against MCF7 cell line, with GI50 values in the micromolar range. Their cytotoxic effect on MCF7 cells was further investigated in order to elucidate their mode
Synthetic approaches towards an indole alkaloid isolated from the marine sponge Halichondria melanodocia
作者:Ann-Louise Johnson、Jan Bergman
DOI:10.1016/j.tet.2006.09.003
日期:2006.11
The exocyclic analogue of the indole alkaloid isolated from the marinespongeHalichondriamelanodocia has been prepared via olefination of a phosphonoester derived from 3-(2-bromoacyl)indole. The formation of an unexpected indolylazepine is also discussed.
Synthesis of Non-peptidic Tryptamine Derivative (THS-12) which Stimulates TPO Responsive Cell Growth (Synthetic Studies on Indoles and Related Compounds 51)