Author/Authors :
Jiang، نويسنده , , Ying-Yan and Li، نويسنده , , Qian and Lu، نويسنده , , Wei and Cai، نويسنده , , Jun-Chao، نويسنده ,
Abstract :
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.