The total synthesis of catunaregin in both racemic and optically active forms was accomplished. The enantioselective synthesis uses the Evans aldol strategy, with an oxazolidinone or thiazolidinethione as the chiral auxiliary. The key features include a syn‐selective aldol reaction to form the Evans‐syn or non‐Evans‐syn product, and a successive ketalization reaction of a furanyl diol derivative under acidic conditions.

中文翻译：

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Catunaregin的全合成及其抗肿瘤活性的初步评价

Catunaregin的外消旋和旋光活性形式都可以完全合成。对映选择性合成使用Evans aldol策略，并以恶唑烷酮或噻唑烷硫酮为手性助剂。主要功能包括形成Evans- syn或非Evans- syn产物的顺-选择性羟醛反应，以及在酸性条件下呋喃二醇衍生物的连续缩酮化反应。