Synthesis of multidrug resistance modulator LY335979 labeled with deuterium and tritium
摘要:
Dideutero and ditritioisotopomers of the multidrug resistance modulator LY335979 were prepared by initial bromination of 5-hydroxyquinoline under acidic conditions followed by Mitsunobu coupling of 6,8-dibromo-5-hydroxyquinoline with (S)-glycidol. Opening of the resulting epoxide with dibenzosuberylpiperazine LY335995 resulted in dibromoanalog of LY335979, which was finally reductively debrominated with deuterium or tritium in the presence of palladium on carbon.