Horner-Wadsworth-Emmons Reactions as a Facile Entry to Biogenetic Key Substructures
作者:Johann Mulzer、Andreas Sieg、Christoph Brücher、Dieter Müller、Harry J. Martin
DOI:10.1055/s-2005-863705
日期:——
One-pot Horner-Wadsworth-Emmons reactions are used to synthesize α,β-enones with two configurationally independent stereogenic centers. These intermediates are used for the construction of polyketide and monosaccaride fragments. In particular, novel approaches to the branched pentoses mycarose and arcanose are described.
Cyclodepsipeptide alveolaride C: total synthesis and structural assignment
作者:Sanu Saha、Debobrata Paul、Rajib Kumar Goswami
DOI:10.1039/d0sc04478d
日期:——
First stereoselective totalsynthesis of naturally occurring bioactive cyclodepsipeptide alveolaride C has been achieved using a convergent approach. This synthetic study enabled us to establish unambiguously the stereochemistry of three unassigned chiral centres embedded in the nonpeptidic segment as well as revised the stereochemistry of the proposed β-phenylalanine counterpart of the molecule. The