Lasonolide A: Structural Revision and Total Synthesis
摘要:
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.
Lasonolide A: Structural Revision and Total Synthesis
摘要:
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.
Lasonolide A: Synthesis of
A and B Rings via a Cycloetherification Strategy
作者:David Hart、Suzanne Patterson、James Unch
DOI:10.1055/s-2003-40323
日期:——
Syntheses of tetrahydropyrans ent-2 and ent-3, substructures of the A and B rings of the enantiomer of lasonolide A (1), are described. The syntheses of ent-2 and ent-3 feature highly stereoselective cycloetherification reactions of bis-homoallylic alcohols 7 and 8.
本文介绍了四氢吡喃 ent-2 和 ent-3 的合成,它们是拉索诺内酯 A(1)对映体 A 环和 B 环的亚结构。ent-2和ent-3的合成过程以双高脂醇7和8的高度立体选择性环醚化反应为特征。
Synthesis of (+)-Lasonolide A: (−)-Lasonolide A is the biologically active enantiomer
作者:Eun Lee、Ho Young Song、Jung Min Joo、Jung Won Kang、Dae Shik Kim、Cheol Kyu Jung、Chang Yong Hong、ShinWu Jeong、Kiwan Jeon
DOI:10.1016/s0960-894x(02)00821-1
日期:2002.12
(+)-Lasonolide A was synthesized following the established procedure. (-)-Lasonolide A was found to be the biologically active enantiomer.