Bulletin of the Chemical Society of Japan p. 2277 - 2280 (1988)
Update date:2022-08-11
Topics:
Parmar, Virinder S.
Jain, Rajni
Singh, Suddham
5,7-Dimethoxy-4-(4-hydroxyphenyl)-2H-1-benzopyran-2-one and 5,7-dimethoxy-4-(4-methoxyphenyl)-2H-1-benzopyran-2-one, two new neoflavonoids occuring in Courtarea hexandra have been synthesized via Pechmann condensation.Attempts made to synthesize another 4-arylcoumarin, 5-hydroxy-7-methoxy-4-(2,5-dihydroxyphenyl)-2H-1-benzopyran-2-one, constituent of the same plant, led to the formation of the hitherto unknown 2-ethoxy-6-hydroxy-4H-1-benzopyran-4-one.
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