because of their known biological activity and established value in the synthesis of α-hydroxytropolones. Upon treatment with triflic acid, a series of 3-methoxy-8-oxabicyclo[3.2.1]octa-3,6-dien-2-ones rearrange rapidly and cleanly to form methoxytropolones. Interestingly, bicycles that are derived from dimethyl acetylenedicarboxylate (R2 = R3 = CO2Me) instead form furans as the major product.
甲氧基
托酚酮是用于治疗开发的有用支架,因为其已知的
生物活性和在 α-羟基
托酚酮合成中的确定价值。用
三氟甲磺酸处理后,一系列 3-甲氧基-8-氧杂二环[3.2.1]八-3,6-二烯-2-酮快速而干净地重排,形成甲氧基
托酚酮。有趣的是,衍生自
乙炔二
甲酸二甲酯(R 2 = R 3 = CO 2 Me)的自行车反而形成
呋喃作为主要产物。