Design and synthesis of tricyclic derivatives as high density lipoprotein cholesterol enhancers |
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Authors: | Elokdah H Chai S Y Ho D Sulkowski T |
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Institution: | Chemical Sciences, Wyeth-Ayerst Research, Princeton, NJ 08543, USA. elokdah@war.wyeth.com |
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Abstract: | A pharmacophore for increasing HDLC was proposed based on common structural features of non-thio-containing compounds with HDLC enhancing properties. A search of the compound database identified various series of these non-thio-containing compounds, including a novel tricyclic imidazoisoquinolone. Preparation of 1-aryl-3-oxo-1,3-dihydro-2-benzofuran-1-carboxamides using a novel and widely applicable one-step process from 2-acyl benzoic acids is reported. Reaction of diamines with 1-aryl-3-oxo-1,3-dihydro-2-benzofuran-1-carboxamides and related aza-analogues proceeded with regio-control to furnish imidazoisoquinolones, pyrimidoisoquinolones, and imidazonaphthyridines. NMR studies and X-ray crystallography confirmed the regiochemistry of the products. Compounds of these series increased concentrations of HDLC in test animals following oral administration. |
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