Stereoselective Arylation of Substituted Cyclopentenes by Substrate-Directable Heck–Matsuda Reactions: A Concise Total Synthesis of the Sphingosine 1-Phosphate Receptor (S1P<sub>1</sub>) Agonist VPC01091
作者:Caio C. Oliveira、Emerson A. F. dos Santos、Julia H. Bormio Nunes、Carlos Roque D. Correia
DOI:10.1021/jo3015209
日期:2012.9.21
efficient and diastereoselective substrate-directable Heck–Matsuda reaction with nonactivated five-membered olefins. The carbamate acts as the main directing group in the arylation process allowing the synthesis of several functionalized aryl cyclopentenes in good to excellent diastereoselectivities (>85:15) and in isolated yields ranging from 41 to 90%. No double bond isomerizations were observed in these
我们在本文中描述了一种有效且非对映选择性底物可控的Heck-Matsuda反应与非活化五元烯烃的反应。氨基甲酸酯是芳基化过程中的主要导向基团,允许合成数个官能化的芳基环戊烯,具有良好至优异的非对映选择性(> 85:15),分离产率为41%至90%。在这些Heck反应中未观察到双键异构化,并且在所有检查的情况下均保留了新创建的苄基中心。底物可控的Heck芳基化方法已成功地通过一种简明实用的途径,通过5个步骤以40%的总收率完成了鞘氨醇1-磷酸受体亚型1(S1P 1)激动剂VPC01091的直接合成。