A Simple Biomimetic Synthesis of <i>dl</i>-Chamaejasmine, a Unique 3,3‘-Biflavanone
作者:Wei-Dong Z. Li、Bao-Chun Ma
DOI:10.1021/ol047718u
日期:2005.1.1
The first chemical synthesis of dl-chamaejasmine (1), a structurally unique 3,3'-biflavanone natural product, was achieved as shown above, by a two-step sequence starting from trimethylether derivatives of 3-iodonaringenin (cis + trans) involving (i) metallic lanthanum-mediated reductive dimerization in refluxing THF and (ii) global demethylation with BBr3 in CH2Cl2. This synthesis represents a generally