Formal synthesis of (±)-mitsugashiwalactone and (±)-isodihydronepetalactone from norborn-5-en-2-one involving Shapiro reaction

被引:4
作者
Chang, MY [1 ]
Chang, NC [1 ]
机构
[1] Natl Sun Yat Sen Univ, Dept Chem, Kaohsiung, Taiwan
关键词
D O I
10.1002/jccs.199900005
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A formal synthesis of (+/-)-mitsugashiwalactone (1) and (+/-)-isodihydro nepetalactone (2) was accomplished. Baeyer-Villiger lactonization of ketone 9 followed by acidic treatment led to the rearranged lactone 8, which underwent a series of functional group transformations to give cyclopentanone derivatives 19 and 20. Shapiro reaction on 21 and 22 in the presence of excess dry ice gave lactones 5 and 6. Lactones 5 and 6 previously have been converted to mitsugashiwalactone (1) and isodihydronepetalactone (2), respectively.
引用
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页码:41 / 45
页数:5
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