An unusual reaction with Grubbs' catalyst during the synthesis of bridged epothilones yielded five-membered internal lactones instead of the expected metathesis products. Three of the lactones have activities comparable to epothilone D.
在合成桥式表
四氢呋喃酮的过程中,与格拉布斯催化剂发生了不寻常的反应,生成了五元内酯,而不是预期的偏合成产物。其中三个内酯的活性与表
蒽酮 D 相当。