Microfluidic light-driven synthesis of tetracyclic molecular architectures.

Microfluidic light-driven synthesis of tetracyclic molecular architectures.
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DOI:
10.3762/bjoc.14.219
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发表时间:
2018
影响因子:
2.7
通讯作者:
Dell'Amico L
Dell'Amico L
中科院分区:
化学4区
文献类型:
--
作者:
Mateos J;Meneghini N;Bonchio M;Marino N;Carofiglio T;Companyó X;Dell'Amico L

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本文报道了一种直接组装高度功能化四环药效核心的有效合成方法。香豆素和色酮与光产生的光烯醇中间体进行非对映选择性[4 + 2]环加成反应。反应借助于微流控光反应器(MFP)以高产率(高达>98%)和几乎完全的非对映体控制(>20:1 dr)发生。该方法很容易放大到平行设置,在14小时的反应时间内提供948毫克的产品。最后,一系列的操作四环支架获得了有价值的生物活性分子的前体。
Herein we report an effective synthetic method for the direct assembly of highly functionalized tetracyclic pharmacophoric cores. Coumarins and chromones undergo diastereoselective [4 + 2] cycloaddition reactions with light-generated photoenol intermediates. The reactions occur by aid of a microfluidic photoreactor (MFP) in high yield (up to >98%) and virtually complete diastereocontrol (>20:1 dr). The method is easily scaled-up to a parallel setup, furnishing 948 mg of product over a 14 h reaction time. Finally, a series of manipulations of the tetracyclic scaffold obtained gave access to valuable precursors of biologically active molecules.
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影响因子: 46.2
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