中文摘要：

目的 合成内酯型去甲二萜生物碱。方法 塔拉萨敏经Jone’s氧化和Baeyer—Villiger氧化反应，合成了两种内酯型去甲二萜生物碱。单乙酰塔拉萨敏裂解C7-C17键后，经水解、Jone’s氧化、Baeyer—Villiger氧化及还原等共5步反应，合成了7，17-次裂的内酯型去甲二萜生物碱。结果和讨论 所得产物的结构经MS、^1HNMR和^13CNMR确证。

英文摘要：

OBJECTIVE To synthesize lactone - type norditerpenoid alkaloids. METHODS Two kinds of lactone - type norditer- penoid alkaloids were synthesized from talatisamine as the starting material through Jone＇ s oxidation and Baeyer - Villiger oxidation. 7, 17 - seco - lactone - type norditerpenoid alkaloids was prepared with the starting material 14 - acetyhalatisamine through five steps. RESULTS and CONCLUSION The structures of the products were confirmed by MS, ^1HNMR and ^13CNMR.