Intermediate compounds, including 2-(t-butyldimethylsilyloxymethyl)-3,4-[(dimethylmethylene)dioxy]-5-hydroxy-tricyclo[5.2.1.02,6]dec-8-ene, which are useful for the synthesis of neplanocin A having strong antitumor activity. Improved processes for the preparation of neplanocin A, starting from optically active 2-hydroxymethyl-5-hydroxy-tricyclo[5.2.1.02,6]deca-3,8-diene and via a key step comprising a retro-Diels-Alder reaction of the above intermediate.
中间化合物,包括2-(叔丁基二甲基
硅氧基甲基)-3,4-[(二甲基亚甲基)二氧基]-5-羟基-
三环[5.2.1.0²,⁶]癸-8-烯,用于合成具有强抗肿瘤活性的新普诺辛A。改进的制备新普诺辛A的过程,从手性2-羟甲基-5-羟基-
三环[5.2.1.0²,⁶]癸-3,8-二烯开始,并通过一个关键步骤,包括上述中间体的反-迪尔斯-阿尔德反应。