A synthetic study toward the construction of the fully functionalized six-membered A-ring of siphonol A is described. The salient features include the introduction of a six-membered ring system through a HWE reaction, the construction of a stereocenter at C5 via a hetero-Diels–Alder reaction, and the installation of the fully functionalized six-membered A-ring of siphonol A through photolytic decarboxylation.

中文翻译：

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全功能化六元A环虹酚A的不对称合成

描述了构建全功能化的虹吸醇 A 六元 A 环的综合研究。其显着特点包括通过 HWE 反应引入六元环系统、通过杂 Diels-Alder 反应在 C5 处构建立体中心，以及安装全功能化的 siphonol A 六元 A 环通过光解脱羧作用。