Triethanolamine-catalyzed expeditious and greener synthesis of 2-amino-4H-chromenes
Triethanolamine (TEOA), an inexpensive and eco-friendly base, was used to efficiently catalyze the three-component condensation reaction of heterocyclic/aromatic aldehyde, (α/β)-naphthol, and malononitrile in water to give the corresponding substituted 2-
CHROMENE DERIVATIVES AND THEIR ANALOGA AS WNT PATHWAY ANTAGONISTS
Compounds of formula (IIc); wherein X3 and X4 independently from each other are N or CR8 wherein R8 may be same or different; Y1, Y2, Y3 and Y4 independently from each other are N or CR9 wherein R9 may be same or different and wherein up to 3 of the group
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(2012/05/31)
CHROMENE DERIVATIVES AND THEIR ANALOGA AS WNT PATHWAY ANTAGONISTS
Compounds according to the general formula (I) wherein X1, X2, X3 and X4 independently from each other are Nor CR8 wherein R8 may be same or different, and wherein up to 3 of the group X1, X2, X3 and X4 may be N; A is a 5- or 6-membered aromatic or hetero
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Page/Page column 39
(2012/05/31)
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