Neves Filho RAW, Westermann B, Wessjohann LA. Synthesis of (-)-julocrotine and a diversity oriented Ugi-approach to analogues and probes.
Beilstein J Org Chem 2011;
7:1504-7. [PMID:
22238524 PMCID:
PMC3252850 DOI:
10.3762/bjoc.7.175]
[Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2011] [Accepted: 10/21/2011] [Indexed: 11/23/2022] Open
Abstract
An improved total synthesis of (−)-julocrotine in three steps from Cbz-glutamine, in 51% overall yield, is presented. To demonstrate the potential of the heterocyclic moiety for diversity oriented synthesis, a series of (−)-julocrotine analogues was synthesized by employing the heterocyclic precursor as an amino input in Ugi four-component reactions (Ugi-4CR) [1].
Collapse