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| Studies on macrocyclic diterpenoids Ⅴ.Synthesis of(±)-sarcophytol-A benzyl ether | |
| 基金项目： | This project was supported by the National Natural Science Foundation of China，Special Research Grant for Doctoral Sites in Universities. |
| 摘 要： | The title compound,sarcophytol-A benzyl ether has been synthesized through 13 stepsby employing acetone and geraniol as starting materials.The key steps in the synthesis weredouble bond migration reaction of allylic alcohols 5 and 6,phase transfer catalytic coupling(PTC)reaction of Ⅱ with 7 and the cyclization reaction of dicarbonyl acyclic precursor inducedby TiCl_3-AlCl_3(3:1)/Zn-Cu system. |
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