Both enantiomers of muscolide (), (R)-(−)-phoracantholide I [] and the homologous (9R)-(−)-9-tetradecanolide [] were synthesized by ring enlargement of cyclohexanone (6c) and cyclododecanone (6a). The ring-enlargement sequence was improved by oxidation of with ruthenium tetroxide and reduction of 8 using catecholborane.
muscolide的(两种对映体),(- [R )- ( - ) - phoracantholide I [ ]和同源(9 - [R )- ( - ) - 9- tetradecanolide [ ]是由
环己酮(的扩环合成6C)和
环十二烷酮(6a中)。通过用
四氧化钌氧化和用
儿茶酚硼烷还原8可以改善环的扩大顺序。