Synthesis of leuprorelin using segment condensation approach

Tao Cen, Cheng Zhou, Xiuming Wu, Bo Jiang, Shemin Zhu, Shubao Shen

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Leuprorelin was synthesized by segment condensation strategy (2+7). The protected dipeptide, Fmoc-Arg(Pbf)-Pro-NHEt, was synthesized in solution phase and its yield reached 84.8%, when DIC was used as the coupling reagent, THF as the solvent, and the molar ratio of Pro-NHEṫHCl and Fmoc-Arg(Pbf)-OH was 1 : 1.25. The protected pentapeptide synthesized in solid phase yielded 81.3%. The protected leuprorelin was synthesized by segment condensation using DMF : DMSO (V : V=1 : 1) as the solvent and HATU/HOBt/DIEA as the coupling reagent. The target product of leuprorelin was achieved after cutting the side-chain.

Original languageEnglish
Pages (from-to)837-842
Number of pages6
JournalChinese Journal of Organic Chemistry
Volume30
Issue number6
StatePublished - Jun 2010

Keywords

  • Difficult sequence
  • Leuprorelin
  • Peptide synthesis
  • Segment condensation

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