Polyphosphoric acid-catalysedcyclisation of derivatives of crotonophenone and chalcone is shown to be a general reaction which occurs without migration of aryl substituents evident with other Friedel-Crafts catalysts. Two other reactions, however, may intervene: hydrogenation and α-carbonyl cleavage. Thus 4-bromochalcone gives 3 - (p - bromophenyl) -1 - phenylpropan -1 - one, 3 - (p - bromophenyl)indan
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.
Popow S. I., Kopylowa T. M., Andriewskiii A. M., Medwedew S. W., Jachenko+, Zh. organ. khimii, 30 (1994) N 2, S 266-272
作者:Popow S. I., Kopylowa T. M., Andriewskiii A. M., Medwedew S. W., Jachenko+
DOI:——
日期:——
THE PREPARATION AND USE OF COMPOUNDS AS PROTEASE INHIBITORS