id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
eurjchem-860	Halawa, Ahmed Hamdy; Hassan, Ahmed Abd El-Hameed; El-Nassag, Mohamed Ahmed; Abd El-All, Mahmoud Mohamed; Abd El-Jaleel, GehadAbd El-Raheem; Eliwa, Essam Mohamed; Bedair, Ahmed Hammam	Synthesis, reactions, antioxidant and anticancer evaluation of some novel coumarin derivatives using ethyl 2-(2-oxo-4-phenyl-2H-chromen-7-yloxy) acetate as a starting material	2014	11	.pdf	application/pdf	7101	472	70	It is clear from the tabulated results that compound 10showed the best antioxidant activity against DPPH intested compounds, while compounds 29b, 31a and 32a showed no activity. Synthesis of 4‐[2‐(2‐oxo‐4‐phenyl‐2H‐chromen‐7‐ yloxy)acetamido]benzenesulfonic acid (28) A mixture of 2‐(2‐oxo‐4‐phenyl‐2H‐chromen‐7‐yloxy)acetyl chloride (26) (0.01 mol) and 4‐aminobenzenesulfonic acid(0.01 mol) in dry dioxane (10 mL) and a catalytic amount of pyridine was refluxed for1 h, the resulting solid on heating was collected by filtration, washed with ethanol several times and recrystallized from DMF to give compound 28 (Scheme 6).	cache/eurjchem-860.pdf	txt/eurjchem-860.txt