具有生物活性的间苯二酸内酯Aigialomycin D(1)已通过闭环易位(RCM)和Ramberg-Bäcklund反应的新型结合而合成。这种合成策略通过在C7'-C8'烯烃处进行闭环复分解,使C1'-C2'烯烃在大环形成过程中作为砜被掩盖,从而避免了环己烯的竞争形成。随后兰堡-巴克伦反应有效地产生C1'-C2' É -烯烃。这种结合的RCM /Ramberg-Bäcklund反应策略应可广泛应用于大环二烯的合成。
Total Synthesis of Aigialomycin D Using a Ramberg−Bäcklund/RCM Strategy
作者:Lynton J. Baird、Mattie S. M. Timmer、Paul H. Teesdale-Spittle、Joanne E. Harvey
DOI:10.1021/jo802561s
日期:2009.3.20
lactone aigialomycin D (1) has been synthesized by a novel combination of ring-closingmetathesis (RCM) and Ramberg−Bäcklund reactions. This synthetic strategy enables the C1′−C2′ alkene to be masked as a sulfone during formation of the macrocycle by ring closing metathesis at the C7′−C8′ olefin, thus avoiding competing formation of a cyclohexene. A subsequent Ramberg−Bäcklund reaction efficiently produces
具有生物活性的间苯二酸内酯Aigialomycin D(1)已通过闭环易位(RCM)和Ramberg-Bäcklund反应的新型结合而合成。这种合成策略通过在C7'-C8'烯烃处进行闭环复分解,使C1'-C2'烯烃在大环形成过程中作为砜被掩盖,从而避免了环己烯的竞争形成。随后兰堡-巴克伦反应有效地产生C1'-C2' É -烯烃。这种结合的RCM /Ramberg-Bäcklund反应策略应可广泛应用于大环二烯的合成。