Total synthesis of (+)-11,11'-dideoxyverticillin A.

Total synthesis of (+)-11,11'-dideoxyverticillin A.
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DOI:
10.1126/science.1170777
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发表时间:
2009-04-10
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Movassaghi M
Movassaghi M
中科院分区:
其他
文献类型:
--
作者:
Kim J;Ashenhurst JA;Movassaghi M

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真菌代谢产物(+)-11,11 '-双脱氧轮枝菌素A是一种从海洋青霉属分离的细胞毒性生物碱,属于一个迷人的家庭密集功能化,立体化学复杂,和错综复杂的二聚epidithiodiketopiperazine天然产物。尽管二聚的epidithiodiketopiperazines已经被发现了近四十年,但没有一个屈服于全合成。我们报道了一个简洁的对映选择性全合成(+)-11,11 '-双脱氧轮枝青霉素A通过我们的生物合成假说的启发策略。高度立体和化学选择性的高级阶段四羟基化和四硫醇化反应,以及在最后一步中引入epidithiodiketopiperazine核心的温和策略被开发来解决这个高度敏感的子结构。我们的先进的分子框架的快速功能化的目的是模仿合理的生物合成步骤,并提供了一个有效的策略,化学合成的生物碱家族的其他成员。
The fungal metabolite (+)-11,11'-dideoxyverticillin A, a cytotoxic alkaloid isolated from a marine Penicillium sp., belongs to a fascinating family of densely functionalized, stereochemically complex, and intricate dimeric epidithiodiketopiperazine natural products. Although the dimeric epidithiodiketopiperazines have been known for nearly four decades, none has succumbed to total synthesis. We report a concise enantioselective total synthesis of (+)-11,11'-dideoxyverticillin A via a strategy inspired by our biosynthetic hypothesis for this alkaloid. Highly stereo- and chemoselective advanced stage tetrahydroxylation and tetrathiolation reactions, as well as a mild strategy for the introduction of the epidithiodiketopiperazine core in the final step were developed to address this highly sensitive substructure. Our rapid functionalization of the advanced molecular framework aims to mimic plausible biosynthetic steps and offers an effective strategy for the chemical synthesis of other members of this family of alkaloids.
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