作者:Ying Lan Jin、Sanghee Kim、Yeong Shik Kim、Soon-Ai Kim、Hak Sung Kim
DOI:10.1016/j.tetlet.2008.09.070
日期:2008.11
We report the first total synthesis of glycyrol. Glycyrol, isolated from Glycyrrhizae Radix, has a unique skeleton of a benzofuran coumarin. The key steps are Smiles rearrangement and selective introduction of prenyl and O-methyl groups. The first application of a novel precursor for Smiles rearrangement, 3-benzyloxy-substituted (diacetoxyiodo)benzene, showed the synthetic possibility for diverse precursors
我们报告了甘油的第一个总合成。从甘草基中分离出来的甘草醇具有苯并呋喃香豆素的独特骨架。关键步骤是Smiles重排和异戊二烯基和O-甲基的选择性引入。用于Smiles重排的新型前体3-苄氧基取代的(二乙酰氧基碘)苯的首次应用显示了多种前体的合成可能性。引入苄基保护基很重要,因为由于中间体的低溶解度,很难进行选择性脱保护。