Rhodojaponin III 是一种具有新型化学支架的grayanane型二萜类天然产物。它显示出有效的抗伤害活性,可能代表一类具有新颖作用方式的新型天然非阿片类镇痛药。我们探索了 Au(I) 催化的 Conia-ene 环化和 Mn(III) 介导的炔基酮自由基环化,以合成红杜鹃苷 III 的双环[3.2.1]辛烷片段。这些策略将适用于未来生物学研究中红枣苷 III 及其类似物的合成。
Easily accessible dihydropyrans undergo oxidation with PDC/t-BuOOH to yield the corresponding 5,6-dihydro-2-(2H)-pyranones in good yield. The methodology is exemplified with the synthesis of α-pyrone, (±)-argentilactone and (±)-goniothalamin.
Synthetic efforts toward the bicyclo[3.2.1]octane fragment of rhodojaponin III
作者:Caroline G. Webster、Hyeri Park、Amanda F. Ennis、Jiyong Hong
DOI:10.1016/j.tetlet.2021.153055
日期:2021.5
natural non-opioid analgesics with a novel mode of action. We explored the Au(I)-catalyzed Conia-ene cyclization and the Mn(III)-mediated radical cyclization of alkynyl ketones for the synthesis of the bicyclo[3.2.1]octane fragment of rhodojaponin III. These strategies will be applicable in the synthesis of rhodojaponin III and analogs for future biological studies.
Rhodojaponin III 是一种具有新型化学支架的grayanane型二萜类天然产物。它显示出有效的抗伤害活性,可能代表一类具有新颖作用方式的新型天然非阿片类镇痛药。我们探索了 Au(I) 催化的 Conia-ene 环化和 Mn(III) 介导的炔基酮自由基环化,以合成红杜鹃苷 III 的双环[3.2.1]辛烷片段。这些策略将适用于未来生物学研究中红枣苷 III 及其类似物的合成。