Facile Synthesis of 1-Hydroxy-5-methoxy-Benzo[f][2,7]naphthyridines
摘要:
A new route for the synthesis of 1-hydroxy-5-methoxy-benzo[f][2,7]naphthyridines has been developed from easily available precursor 2-chloro-3-formyl quinolines. The 2-methoxy-3-formyl quinolines were prepared and condensed with glycine ethyl ester hydrochloride. This resulted in the formation of an imines, which on cyclization with Dowtherm A yielded 1-hydroxy-5-methoxy-1,2-dihydrobenzo[f][2,7]naphthyridines.
SYNTHESIS AND FREE RADICAL SCAVENGING PROPERTY OF SOME QUINOLINE DERIVATIVES
作者:R SUBASHINI、S MOHANA ROOPAN、F NAWAZ KHAN
DOI:10.4067/s0717-97072010000300008
日期:——
In the present work synthesis of 2-chloroquinoline-3-carbaldehydes (1a-g), 2-chloro-3-(1, 3-dioxolan-2-yl)quinolines (2a-g) and antioxidant activity using the DPPH assays is reported. The results showed that the compounds 1b, 1c, 2b, 2e, 2f possessed 84.65 to 85.75 % radical scavenging activity where as compound 1g showing 92.96% radical scavenging activity.