Rapid Access to 2,2-Disubstituted Indolines via Dearomative Indolic-Claisen Rearrangement: Concise, Enantioselective Total Synthesis of (+)-Hinckdentine A.
Rapid Access to 2,2-Disubstituted Indolines via Dearomative Indolic-Claisen Rearrangement: Concise, Enantioselective Total Synthesis of (+)-Hinckdentine A.
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DOI:
10.1021/jacs.3c03611
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发表时间:
2023-07-12
影响因子:
15
通讯作者:
Rawal, Viresh H.
中科院分区:
文献类型:
--
作者:
Baidilov, Daler;Elkin, Pavel K.;Athe, Sudhakar;Rawal, Viresh H.
The construction of 2,2-disubstituted indolines has long presented a synthetic challenge without any general solutions. Herein, we report a robust protocol for the dearomative Meerwein–Eschenmoser–Claisen rearrangement of 3-indolyl alcohols that provides efficient access to 2-substituted and 2,2-disubstituted indolines. These versatile subunits are useful for natural product synthesis and medicinal chemistry. The title [3,3] sigmatropic rearrangement proceeds in generally excellent yield and transfers the C3-indolic alcohol chirality to the C2 position with high fidelity, thus providing a reliable method for the construction of enantioenriched 2,2-disubstituted indolines. The power of this methodology is demonstrated through the concise and strategically unique total synthesis of the marine natural product hinckdentine A, which features a dearomative Claisen rearrangement, a diastereocontrolled hydrogenation of the alkene product, a one-pot amide-to-oxime conversion using Vaska’s complex, and a regioselective late-stage tribromination.
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影响因子:
3.6
作者:
BILLIMORIA, AD;CAVA, MP
通讯作者:
CAVA, MP
影响因子:
3.2
作者:
Camp, Jason E.;Craig, Donald;White, Andrew J. P.
通讯作者:
White, Andrew J. P.
影响因子:
5.2
作者:
De, Subhadip;Tomiczek, Breanna M.;Yang, Yinuo;Ko, Kenneth;Ghiviriga, Ion;Roitberg, Adrian;Grenning, Alexander J.
通讯作者:
Grenning, Alexander J.
影响因子:
5.2
作者:
Higuchi, Kazuhiro;Sato, Yukihiro;Kawasaki, Tomomi
通讯作者:
Kawasaki, Tomomi
影响因子:
1.8
作者:
FELIX, D;GSCHWEND.K;ESCHENMOSER, A
通讯作者:
ESCHENMOSER, A