作者:Ying-Yan Jiang、Qian Li、Wei Lu、Jun-Chao Cai                                    
                                    
                                        DOI:10.1016/s0040-4039(03)00191-6
                                    
                                    
                                        日期:2003.3
                                    
                                    A concise synthesis of (+/-)-cryptotanshinone and tanshinone IIA from readily available 1,5-naphthalenediol is described in which the key step is the radical cyclization process promoted by SmI2 to make a furan ring. (C) 2003 Elsevier Science Ltd. All rights reserved.