The asymmetric synthesis of both (R)-and (S)-arundic acid has been achieved via the key step of a stereoselective alkylation reaction using non-cross-linkedpolystyrene (NCPS) supported (4R)- and (4S)-2-phenylimino-2-oxazolidine as chiralauxiliaries. This method is efficient (both enantiomers were obtained in 99% ee and 60% overall yield) and the chiralauxiliaries can be recovered quantitatively
Prodrugs of (2R)-2-Propyloctanoic Acid For the Treatment of Stroke
申请人:Munoz Benito
公开号:US20080132488A1
公开(公告)日:2008-06-05
Disclosed are prodrugs of (2R)—2-propyloctanoic acid, and pharmaceutical compositions comprising them, which may be effective in modulating multiple events in the biochemical cascade of stroke. Also disclosed are methods of treating patients who have had a stroke, or are at risk of stroke, by administering the compounds or compositions of the invention.
Prodrugs of (2R)-2-propyloctanoic acid for the treatment of stroke
申请人:Merck & Co., Inc
公开号:US07495029B2
公开(公告)日:2009-02-24
Disclosed are prodrugs of (2R)-2-propyloctanoic acid, and pharmaceutical compositions comprising them, which may be effective in modulating multiple events in the biochemical cascade of stroke. Also disclosed are methods of treating patients who have had a stroke, or are at risk of stroke, by administering the compounds or compositions of the invention.
The asymmetric synthesis of the anti-Alzheimer agent (R)-arundic acid has been performed via a diastereoselective photo-deconjugation reaction as the key-step. The synthetic approach involves a readily available chiral auxiliary, diacetone-D-glucose, and allows access to either enantiomer as illustrated by the synthesis of (S)-arundic acid. Both enantiorners were obtained in 88% ee using the same chiral auxiliary. (c) 2005 Elsevier Ltd. All rights reserved.