A concise enantioselective total synthesis of (+)-epi-muricatacin, a potent cytotoxic agent, is described. A key feature of this protocol is a catalytic asymmetric hydrogenation and a chiral auxiliary mediated intramolecular iodoetherification to ensure a high degree of distereo- and enantiocontrol. (C) 2010 Elsevier Ltd. All rights reserved.
Regioselective opening of chiral hydroxy epoxides: A short route to muricatacin and its diastereomer epi-muricatacin
作者:Mohamed Saïah、Michel Bessodes、Kostas Antonakis
DOI:10.1016/0040-4039(93)85016-p
日期:1993.3
The dilithioacetate opening of chiral epoxides, obtained by the Sharpless asymmetric epoxidation procedure, led regiospecifically to the corresponding hydroxy gamma-lactones thus opening a short route to epi-muricatacin and muricatacin.
Asymmetric Synthesis of Both Enantiomers of a δ-Lactone Analogue of Muricatacin
作者:Patrick Guiry、Robert Doran
DOI:10.1055/s-0033-1340850
日期:——
generate the δ-lactone analogue employing Sharpless asymmetric epoxidation and ZrCl4-catalyzed intramolecular acetalization as the key steps. The asymmetric synthesis of bothenantiomers of the δ-lactone analogue of the antitumoral natural product γ-lactone muricatacin has been carried out. Initial attempts to also synthesize the natural product proved unsuccessful due to the poor reactivity of the