The asymmetric syntheses of two anticancer natural products, candenatenins B and C, are described, leading to a revision of the originally assigned stereochemistries. The syntheses follow a Diels–Alder/retro-Diels Alder strategy using a chiral anthracene auxiliary to access both targets with 90% ee. The inherent structural qualities of the auxiliary allow for both regio- and diastereoselective transformations
描述了两种抗癌
天然产物 candenatenins B 和 C 的不对称合成,导致对最初指定的立体
化学进行了修订。合成遵循 Diels-Alder/retro-Diels Alder 策略,使用手性
蒽助剂以 90% ee 访问两个目标。助剂的固有结构特性允许区域和非对映选择性转换。