Highly efficient macrolactonization of ω-hydroxy acids using benzotriazole esters: synthesis of Sansalvamide A
作者:José Antonio Morales-Serna、Ericka Sánchez、Ricardo Velázquez、Jorge Bernal、Eréndira García-Ríos、Rubén Gaviño、Guillermo Negrón-Silva、Jorge Cárdenas
DOI:10.1039/c0ob00161a
日期:——
A facile and mild macrolactonization reaction of ω-hydroxy acids was developed based on the transesterification of benzotriazole esters. Treatment of ω-hydroxy acids with 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC) and 1-hydroxy benzotriazole (HOBT) in chloroform provided macrolactones in excellent yields. The reactions were performed under basic, neutral and acidic conditions using N,N-d