Divergent and selective functionalization of 2-formylpyrrole and its application in the total synthesis of the aglycone alkaloid pyrrolemarumine

Eder I. Martínez-Mora, Miguel A. Caracas, Carlos H. Escalante, Damian A. Madrigal, Héctor Quiroz-Florentino, Francisco Delgado, Joaquín Tamariz

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Abstract

Diverse 1,2-and 1,2,5-substituted pyrroles were efficiently prepared through a regioselective functionalization of 2-formylpyr­role (5a). This methodology was applied for the first total synthesis of pyrrolemarumine (4b), the aglycone of the corresponding natural pyr­role alkaloid 4”-O-α-L-rhamnopyranoside. The synthesis of 4b was achieved starting from 5a through a seven-step process in 28% over­all yield.

Original languageEnglish
Pages (from-to)23-33
Number of pages11
JournalJournal of the Mexican Chemical Society
Volume60
Issue number1
StatePublished - 1 Jan 2016

Keywords

  • 2-formylpyrrole
  • Pyrrole alkaloids
  • Pyrrolemarumine
  • Vilsmeier-Haack formylation

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