An efficient total synthesis of the naturally occuring mappicine ketone 1 and mappicine 2 are described. The approach is based on the assembly of tricyclic amine 5 with pseudo acid chloride 20. A Friedlander condensation is utilized for the construction of the ABC skeleton and a periselective Diels-Alder approach is utilized for the preparation of the pseudo acid chloride.

中文翻译：

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收敛的全合成甲氧苄啶酮：领先的抗病毒化合物

描述了天然存在的马卡比汀酮1和马卡比汀2的有效的全合成。该方法基于三环胺5与假酰氯20的组装。利用弗里德兰德缩合法来构建ABC骨架，并使用过选择性的Diels-Alder方法来制备假酰氯。