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-carbooxamides 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 imidazonaphthqridines. 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. (C) 2001 Elsevier Science Ltd. All rights reserved.
The photochemistry of N-phenyl phthalonimide: Formation of substituted dihydroisocoumarins in the presence of tertiary amines.
作者:Rafael Suau、Ezequiel P. de Inestrosa Villatoro
DOI:10.1016/0040-4020(95)00271-9
日期:1995.5
phthalimide and 3,4-Dihydroisocoumarins were obtained by irradiation of N-phenyl phthalonimide in the presence of tertiaryamines. The δ-lactone structure was demonstrated via an alternative synthesis that gave the isomeric γ-lactone as well. The key steps of the photoreaction, and the role of the amine, oxygen and several potential intermediates are discussed.