The present invention is concerned with certain novel spiro substituted heterocylic ring derivatives. These compounds may be useful in the manufacture of pharmaceutical compositions for treating disorders mediated by lipoxygenases. They may also be useful in the manufacture of pharmaceutical formulations for the treatment of lipoxygenase-mediated disorders.
[EN] SPIRO DERIVATIVES AS LIPOXYGENASE INHIBITORS<br/>[FR] DERIVES SPIRO UTILISES EN TANT QU'INHIBITEURS DE LIPOXYGENASE
申请人:GALILEO PHARMACEUTICALS INC
公开号:WO2006065686A2
公开(公告)日:2006-06-22
[EN] The present invention is concerned with certain novel spiro substituted heterocyclic ring derivatives. These compounds may be useful in the manufacture of pharmaceutical compositions for treating disorders mediated by lipoxygenase. They may also be useful in the manufacture of pharmaceutical formulations for the treatment of lipoxygenase-mediated disorders. [FR] L'invention concerne certains nouveaux dérivés spiro à cycle hétérocyclique substitué. Ces composés sont utiles dans la préparation de compositions pharmaceutiques destinées au traitement des troubles induits par lipoxygénase. Ils peuvent également être utilisés dans la préparation de formulations pharmaceutiques destinées au traitement de troubles induits par lipoxygénase.
Synthesis of 7-hydroxy-6H-benzo[c]chromen-6-ones based on a ‘[3+3] cyclization/domino retro-Michael–aldol–lactonization’ strategy
The TiCl4-mediated [3+3] cyclization of 2,4-bis(trimethylsilyloxy)penta-1,3-diene with 3-silyloxyalk-2-en-1-ones afforded 2-acetylphenols, which were transformed into functionalized chromones. The Me3SiOTf-mediated condensation of the latter with 1,3-bis(silylenolethers) and subsequent domino ‘retro-Michael–aldol–lactonization’ reaction afforded 7-hydroxy-6H-benzo[c]chromen-6-ones.
TiCl 4介导的2,3-双(三甲基甲硅烷氧基)戊-1,3-二烯与3-甲硅烷氧基烷-2-烯-1-酮的[3 + 3]环化反应提供了2-乙酰基酚,将其转化为官能化的色酮。Me 3 SiOTf介导的后者与1,3-双(甲硅烷基烯醇醚)的缩合反应以及随后的多米诺骨牌“迈克尔-复古-醛醇-内酯化”反应提供了7-羟基-6 H-苯并[ c ] chromen-6-那些。