Synthesis and Biological Evaluation of Dichlorinated Chondramide Derivatives
作者:Dominic Becker、Uli Kazmaier
DOI:10.1002/ejoc.201500369
日期:2015.7
Straightforward synthetic protocols for the synthesis of new ethyl-substituted dichlorinatedchondramides with different methyl-substitution patterns in the polyketide fragment have been developed. The methyl groups at the ϵ-position can be removed completely without a significant influence on the biological activity. In contrast, after removal of the α-methyl group, a significant drop in activity
Diastereoselective homogeneous hydrogenations without direction by substituents
作者:Edward Farrington、Mauro Comes Franchini、John M. Brown、Edward Farrington、Mauro Comes Franchini、John M. Brown
DOI:10.1039/a707025j
日期:——
The Rh complex catalysed hydrogenation of an α-(hydroxyalkyl)-
N-methoxyacrylamide and the Ru complex catalysed hydrogenation of an α-(fluoroalkyl)acrylate both proceed with ≥90% selectivity to give the
syn-isomer.
Synthetic studies directed toward the total synthesis of dolabriferol
作者:Luiz C. Dias、Márcio A. de Sousa
DOI:10.1016/s0040-4039(03)01351-0
日期:2003.7
Herein we report our results towards the totalsynthesis of (−)-dolabriferol, describing the synthesis of fragments C1–C9 and C10–C21. This convergent asymmetric approach relies on the use of a common Weinreb amide precursor for the preparation of both fragments, an efficient anti-aldol reaction followed by Zn(BH4)2 reduction to give a 1,3-syn diol, a selective oxidation of a triol under Swern conditions
Total Synthesis of 10-Deoxymethynolide, the Aglycon of the Macrolide Antibiotic 10-Deoxymethymycin
作者:Ronaldo A. Pilli、Carlos Kleber Z. de Andrade、Carlos Roberto O. Souto、Armin de Meijere
DOI:10.1021/jo9809433
日期:1998.10.1
A short and efficient total synthesis of 10-deoxymethynolide (2c), the aglycon of 10-deoxymethymycin (1c), has been accomplished in 16 steps and 12% overall yield from (S)-3-O-p-toluenesulfonyl-3-hydroxy-2-methylpropanal (15c). The synthesis features an expeditious preparation of (+)-5a, a synthetic equivalent of the Prelog-Djerassi lactonic acid, and the construction of a 12-membered lactone through an intramolecular Nozaki-Hiyama-Kishi coupling reaction.
Cane, David E.; Tan, Weitian; Ott, Walter R., Journal of the American Chemical Society, 1993, vol. 115, # 2, p. 527 - 535