Highly enantioselective Friedel–Crafts alkylation of indoles with α,β-unsaturated ketones with simple Cu(II)–oxazoline–imidazoline catalysts
作者:Assem Barakat、Mohammad Shahidul Islam、Abdullah M.A. Al Majid、Zeid Abdullah Al-Othman
DOI:10.1016/j.tet.2013.04.063
日期:2013.6
developed ligands efficiently affect the copper-catalyzed enantioselective addition of indole to α,β-unsaturated ketones, yielding the corresponding adducts in good yield and high enantiomeric excess. The fine-tuning capability of these ligands plays a significant role in achieving high enantioselectivity in the asymmetricalkylation (up to 99% ee). The higher enantioselectivity of the reaction could
Novel α-Glucosidase inhibitors include propanone substituted indole ring-containing heterocyclic compounds, which are represented by Formula I:
Wherein
R
1
is thiophene, 2,4-di chloro phenyl, 2,6-di chloro phenyl, bromo phenyl, benzyl or nitrophenyl; and R
2
is an aryl group, or stereoisomers or pharmaceutically acceptable salts thereof.