Dibromomethane as One‐Carbon Source in Organic Synthesis: Formal Total Synthesis of (±)‐Nephrosteranic Acid
作者:Yung‐Son Hon、Cheng‐Han Hsieh、Hsien‐Fan Chen
DOI:10.1080/00397910701263767
日期:2007.5.1
Abstract A diastereoselective formal total synthesis of (±)‐nephrosteranic acid (10) is described. The key step is to introduce the α‐methylene group by the ozonolysis of monosubstituted alkenes followed by reaction with a preheated mixture of CH2Br2–Et2NH. The α‐methyl group of compound 10 was formed from the reduction of the corresponding α‐methylene precursor.