Synthesis of Kurasoin B Using Phase-Transfer-Catalyzed Acylimidazole Alkylation
作者:Merritt Andrus、Michael Christiansen、Aaron Butler、Amanda Hill
DOI:10.1055/s-0028-1087809
日期:2009.3
The hydroxy ketone natural product kurasoin B is synthesized using a phase-transfer-catalyzed alkylation reaction with benzyloxyacetyl imidazole. A biscinchonidinium dimethylnaphthalene catalyst allowed for high yield and near complete selectivity (99% ee) for the S-product using 3-methylbromoindole as the electrophile.
羟基酮天然产物 kurasoin B 是使用相转移催化的烷基化反应与苄氧基乙酰咪唑合成的。使用 3-甲基溴吲哚作为亲电子试剂的双辛可尼鎓二甲基萘催化剂可以实现高收率和接近完全选择性(99% ee)的 S-产物。