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Synthesis 2009(11): 1811-1814
DOI: 10.1055/s-0029-1216791
DOI: 10.1055/s-0029-1216791
PAPER
© Georg Thieme Verlag
Stuttgart ˙ New York
Synthesis of Thioflavanone and Flavanone Derivatives by Cyclization of Chalcones
Weitere Informationen
Publikationsverlauf
Received
31 December 2008
Publikationsdatum:
04. Mai 2009 (online)


Abstract
Chalcones bearing suitably positioned protected 2′-sulfanyl or 6′-hydroxy groups cyclize to form the corresponding thioflavanones and flavanones, respectively. The thioflavanones were prepared by a new method involving deprotection of the sulfanyl group under alkaline conditions. These reactions provide a route to new biologically interesting molecules.
Key words
chalcone cyclization - thioflavanone synthesis - benzoxathiolone ring opening - flavanones