Synthesis of alkylated indolizidine alkaloids via Pummerer mediated cyclization: synthesis of (±)-indolizidine 167B, (±)-5-butylindolizidine and (±)-monomorine I
摘要:
The syntheses of indolizidine alkaloids, i.e., (+/-)-coniceine, (+/-)-indolizidine 167B, (+/-)-5-butylindolizidine and (+/-)-monomorine I via Pummerer cyclization are described. The key step is the transformation of lactam sulfoxide to bicyclic lactam via the Pummerer cyclization. (C) 2007 Elsevier Ltd. All rights reserved.
Synthesis of alkylated indolizidine alkaloids via Pummerer mediated cyclization: synthesis of (±)-indolizidine 167B, (±)-5-butylindolizidine and (±)-monomorine I
摘要:
The syntheses of indolizidine alkaloids, i.e., (+/-)-coniceine, (+/-)-indolizidine 167B, (+/-)-5-butylindolizidine and (+/-)-monomorine I via Pummerer cyclization are described. The key step is the transformation of lactam sulfoxide to bicyclic lactam via the Pummerer cyclization. (C) 2007 Elsevier Ltd. All rights reserved.
Synthesis of alkylated indolizidine alkaloids via Pummerer mediated cyclization: synthesis of (±)-indolizidine 167B, (±)-5-butylindolizidine and (±)-monomorine I
The syntheses of indolizidine alkaloids, i.e., (+/-)-coniceine, (+/-)-indolizidine 167B, (+/-)-5-butylindolizidine and (+/-)-monomorine I via Pummerer cyclization are described. The key step is the transformation of lactam sulfoxide to bicyclic lactam via the Pummerer cyclization. (C) 2007 Elsevier Ltd. All rights reserved.