COMPOSITION CONTAINING ARYLNAPHTHALENE LIGNAN DERIVATIVE FOR PREVENTING AND/OR TREATING DEMENTIA
申请人:The Council for Scientific and Industrial Research
公开号:US20140088186A1
公开(公告)日:2014-03-27
A composition for preventing and/or treating dementia and ameliorating memory impairment and/or improving memory, comprising one or more arylnaphthalene lignan derivatives, such as Justicidin A, 5-methoxyjusticidin A, Chinensinaphthol, and a pharmaceutically-acceptable salt thereof, as active ingredient.
US9211278B2
申请人:——
公开号:US9211278B2
公开(公告)日:2015-12-15
A simple method for the synthesis of 4-aryl-9-oxynaphthofuranone lignans
The 9-aryl-4-oxynaphthofuran-1(3H)-one system is
generally synthesized in two steps from α-aryl-o-toluic
acid derivatives. The method involves a tandem conjugate
addition–Dieckmann type condensation between α-lithiated
α-aryl-o-toluic acid derivatives and
2-furan-2(5H)-one as a key step followed by simple
dehydrogenation or dehydration, and can be applied to the synthesis of
two natural lignans (neojusticidin A and neojusticidin
B).