E- or Z-selective Wittig reactions in the synthesis of the carbacyclin iloprost
摘要:
Wittig reaction of ketones 3 with 4-carboxybutyltriphenyl-phosphonium bromide generates the exocyclic 5,6 double bond of iloprost (1) in E/Z ratios between 35:65 and 90:10 depending on substituents and reaction conditions.
E- or Z-selective Wittig reactions in the synthesis of the carbacyclin iloprost
摘要:
Wittig reaction of ketones 3 with 4-carboxybutyltriphenyl-phosphonium bromide generates the exocyclic 5,6 double bond of iloprost (1) in E/Z ratios between 35:65 and 90:10 depending on substituents and reaction conditions.