One-Pot Synthesis of Phenanthridinones by Using a Base-Catalyzed/Promoted Bicyclization of α,β-Unsaturated Carbonyl Compounds with Dimethyl Glutaconate
作者:Lei Li、Jia-Jia Chen、Xing-Lan Kan、Lu Zhang、Yu-Long Zhao、Qun Liu
DOI:10.1002/ejoc.201500414
日期:2015.8
A new strategy for the highly efficient construction of functionalized phenanthridinones has been developed by starting from readily available acyclic α,β-unsaturated carbonyl compounds that have a 2-aminophenyl group at the β-position or carbonyl carbon and dimethyl glutaconate. The domino reaction involves an intermolecular [3+3] annulation followed by an intramolecular aza-cyclization/aromatization
New 3,5‐disubstituted‐2‐pyrazoline derivatives (4–6), their boron‐fluorine complexes (boron (3‐(2′‐aminophenyl),5‐(2′‐/3′‐/4′‐pyridyl)pyrazoline, BOAPPY) (7–9) and boron 1,2′‐diazaflavone complex (BODAF) (11) were synthesized starting from azachalcones (1–3) to diazaflavone (10), respectively. Biological evaluation of compounds 4–9 and 11 showed remarkable antioxidant, antibacterial, and acetylcholinesterase