Synthesis and dehydrogenation of spinaceamine and spinacine 4-hetaryl derivatives
摘要:
The reaction of histamine and histidine with various hetarylaldehydes under the conditions of the base-catalyzed Pictet-Spengler process affords 4-hetaryl-substituted derivatives of spinaceamine and spinacine. The dehydrogenation of the 4-hetaryl-substituted spinaceamine derivatives using elemental sulfur in DMF at 120-130 degrees C led to the formation of 4-hetaryl derivatives of imidazo[4,5-c]-pyridine. Under similar conditions the 4-hetaryl-substituted spinacine derivatives suffered both the dehydrogenation and oxidative decarboxylation resulting in the products identical to the compounds obtained by the dehydrogenation of 4-hetaryl-substituted spinaceamine.
[EN] SYNTHESIS OF AGELADINE A AND ANALOGS THEREOF<br/>[FR] SYNTHÈSE D'AGÉLADINE A ET D'ANALOGUES DE CELLE-CI
申请人:UNIV MACQUARIE
公开号:WO2009152584A1
公开(公告)日:2009-12-23
The invention describes a one pot process for synthesizing a compound of structure (I), or a tautomer thereof. A compound of structure (II), or a tautomer thereof, and an aldehyde of structure RdCHO are condensed to form a condensation product. The resulting condensation product is then oxidized in the same reaction mixture to produce the compound of structure (I) or a tautomer thereof.