Synthesis of tetrahydro-beta-carbolines and tetrahydroisoquinolines fused to pyrrolidines and solution-phase parallel acylation

J Comb Chem. 2009 Jul-Aug;11(4):539-46. doi: 10.1021/cc800191w.

Abstract

A structurally diverse library of potentially pharmacologically important compounds employing classical synthesis methods is described. These compounds are synthesized from beta-aryl pyrrolidines, providing products with the 2-arylethyl amine moiety, a structural feature often encountered in compounds active in the central nervous system. Tri- and tetracyclic scaffolds were obtained using the Pictet-Spengler reaction, resulting in hexahydropyrrolo[3,4-c]isoquinolines 1-3, an octahydropyrrolo[3',4':5,6]pyrido[3,4-b]indole 4, and a hexahydrofuro[2,3-d]pyrrolo[3,4-b]pyridine 5. These scaffolds were further derivatized in parallel fashion to make a 32-membered amide library with yields from 62 to 100% (90% average) and purities from 63 to 100% (93% average).

MeSH terms

  • Acylation
  • Carbolines / chemical synthesis*
  • Carbolines / chemistry
  • Combinatorial Chemistry Techniques* / methods
  • Pharmaceutical Preparations / chemical synthesis
  • Pharmaceutical Preparations / chemistry
  • Pyrrolidines / chemical synthesis
  • Pyrrolidines / chemistry*
  • Tetrahydroisoquinolines / chemical synthesis*
  • Tetrahydroisoquinolines / chemistry

Substances

  • Carbolines
  • Pharmaceutical Preparations
  • Pyrrolidines
  • Tetrahydroisoquinolines
  • tryptoline