Cyclic oligolides via acylketene mediated lactonization: Synthesis and characterization
作者:Shawn W.E. Eisenberg、Chixu Chen、Jiangyue Wu、Carlito Lebrilla、Mark J. Kurth
DOI:10.1016/0040-4039(96)01757-1
日期:1996.10
An acylketenemediated cyclization protocol delivers a series of cyclicoligolides, the largest characterized cyclicoligolide having a 77-membered ring. 6-(ω-Hydroxyalkyl)dioxinone analogs were prepared and cyclizations were conducted under a variety of conditions in refluxing toluene. 1H-NMR, 13C-NMR, and several different mass spectrometric techniques were employed to verify the cyclic nature of
Macrocyclic lactone formation through sulfide contraction. Synthesis of (.+-.)-diplodialide A
作者:Robert E. Ireland、Frank R. Brown
DOI:10.1021/jo01298a022
日期:1980.5
Thermal cycloreversion of 2,2-dimethyl-6 (.omega.-hydroxyalkyl)-4H-1,3-dioxin-4-ones: mono-, di-, and trimeric macrocyclic .beta.-keto lactones by intramolecular trapping of (.omega.-hydroxy)acylketenes
作者:Chixu Chen、Erik K. Quinn、Marilyn M. Olmstead、Mark J. Kurth