The First Enantioselective Total Synthesis of (-)-Trans-Dihydronarciclasine

Gábor Varró, L. Hegedûs, András Simon, Attila Balogh, A. Grün, Ibolya Leveles, B. Vértessy, István Kádas

Research output: Article

8 Citations (Scopus)


A feasible and enantioselective total synthesis of (-)-Trans-dihydronarciclasine [(-)-1], a highly biologically active alkaloid, was devised starting from vanillin (8). The key step of this new synthesis was an asymmetric, organocatalytic Michael addition, in which an optically active nitropentanone [(-)-13] was obtained from a butenone derivative (12). Excellent enantioselectivity (>99% ee) was achieved using the (8S,9S)-9-Amino(9-deoxy)epiquinine (16) organocatalyst. The target molecule can be prepared in 13 steps from compound (-)-13. The total synthesis has provided a facile and first access to the ent-form of naturally occurring (+)-Trans-dihydronarciclasine, a highly potent cytostatic alkaloid.

Original languageEnglish
Pages (from-to)1909-1917
Number of pages9
JournalJournal of Natural Products
Issue number6
Publication statusPublished - jún. 23 2017

ASJC Scopus subject areas

  • Analytical Chemistry
  • Molecular Medicine
  • Pharmacology
  • Pharmaceutical Science
  • Drug Discovery
  • Complementary and alternative medicine
  • Organic Chemistry

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