(-)-Lytophilippine A: synthesis of a C1-C18 building block
Annika Gille1, Martin Hiersemann
1Fakultät Chemie, Technische Universität Dortmund, 44227 Dortmund, Germany. annika.gille@tu-dortmund.de
Abstract:
The convergent enantioselective synthesis of a protected C1-C18 building block for the total synthesis of (-)-lytophilippine A was achieved. A catalytic asymmetric Gosteli-Claisen rearrangement and an Evans aldol reaction served as key C/C-connecting transformations during the assembling of the C1-C7 subunit (10 steps from 4, 29%). The synthesis of the C8-C18 segment was achieved utilizing d-galactose as inexpensive ex-chiral-pool starting material (15 steps, 15%). The merger of the subunits was accomplished by a remarkably efficient sequence consisting of esterification and ring-closing metathesis (five steps, 56%).
More Related Videos
Related Concept Videos
Biosynthesis of Lipids
Diels–Alder Reaction Forming Bridged Bicyclic Products: Stereochemistry
Diels–Alder Reaction Forming Cyclic Products: Stereochemistry
Formation of Lipopolysaccharides
Biosynthesis of Nucleic Acids
[3,3] Sigmatropic Rearrangement of 1,5-Dienes: Cope Rearrangement


