An efficient synthesis of coumarin- and quinolone-annulated thiazole derivatives via ligand-free iron (III)-catalyzed coupling followed by acid-promoted condensation
摘要:
An efficient strategy for the synthesis of coumarin- and quinolone-annulated thiazole derivatives using sodium sulfide as a sulfur source has been achieved via ligand-free iron (III)-catalyzed coupling followed by acid-promoted condensation. This synthetic protocol is one-pot, less expensive, and affords the products in good yields. (C) 2013 Elsevier Ltd. All rights reserved.
Synthesis of novel pyrano[3,2-f]quinoline, phenanthroline derivatives and studies of their interactions with proteins: An application in mammalian cell imaging
A series of tri-cyclic pyrano[3,2-f]quinoline and phenanthroline derivatives have been synthesized by a HCl-mediated 6-'endo-trig' Michael type ring closure reaction of 6-amino-5-(3-hydroxy-3-methylbut-1-ynyl)-2H-chromen-2-one in excellent yields. The process is very simple, facile and inexpensive and can provide a diverse range of substituted quinoline derivatives from simple and easily available starting materials. Moreover, the synthesized derivatives exhibit staining property to the cultured HeLa cells after fixing and can be used as fluorophores which can bind with protein molecule. (C) 2013 Published by Elsevier Masson SAS.