Total synthesis of the macrolide antibiotic cytovaricin
作者:David A. Evans、Stephen W. Kaldor、Todd K. Jones、Jon Clardy、Thomas J. Stout
DOI:10.1021/ja00175a038
日期:1990.9
A convergent asymmetric synthesis of the antinoeplastic macrolideantibiotic cytovaricin has been achieved through the synthesis and coupling of the illustrated spiroketal and polyol glycoside subunits. All absolute steroechemical relationships within the target structure were ultimately controlled by the use of asymmetric aldol, alkylation, or epoxidation methodology. Union of the two subnits was
Lasonolide A: Structural Revision and Total Synthesis
作者:Ho Young Song、Jung Min Joo、Jung Won Kang、Dae-Shik Kim、Cheol-Kyu Jung、Hyo Shin Kwak、Jin Hyun Park、Eun Lee、Chang Yong Hong、ShinWu Jeong、Kiwan Jeon、Ji Hyun Park
DOI:10.1021/jo034930n
日期:2003.10.1
The proposed structure of lasonolide A was synthesized employing radical cyclization reactions of beta-alkoxyacrylates for preparation of the tetrahydropyranyl units A and B, but the spectroscopic data did not match those of the natural product. Both enantiomers of a revised structure featuring 17E,25Z double bonds were synthesized, and the (-)-isomer was found to be the biologically active enantiomer.
Stereocontrolled Total Synthesis of (−)-Ebelactone A
作者:Amit K. Mandal
DOI:10.1021/ol020058d
日期:2002.6.1
[structure: see text] The highly stereocontrolled hydroboration of an alkene, a subsequent Suzuki-Miyaura cross-coupling reaction, a silylcupration on a nonterminal acetylene, and an iododesilylation were the key steps in a convergent total synthesis of (-)-ebelactone A.