Enantioselective Total Synthesis of (+)-Garsubellin A.
Enantioselective Total Synthesis of (+)-Garsubellin A.
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DOI:
10.1002/anie.202109193
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发表时间:
2021-10-11
期刊:
影响因子:
--
通讯作者:
Lee C
中科院分区:
文献类型:
--
作者:
Jang D;Choi M;Chen J;Lee C
Garsubellin A is a meroterpene capable of enhancing the enzyme choline acetyltransferase whose decreased level is believed to play a central role in the symptoms of Alzheimer's disease. Due to the potentially useful biological activity together with the novel bridged and fused cyclic molecular architecture, garsubellin A has garnered substantial synthetic interest, but its absolute stereostructure has been undetermined. We report here the first enantioselective total synthesis of (+)‐garsubellin A. Our synthesis relies on stereoselective fashioning of a cyclohexanone framework and double conjugate addition of 1,2‐ethanedithiol that promotes aldol cyclization to build the bicyclic [3.3.1] skeleton. The twelve‐step, protecting group‐free synthetic route has enabled the syntheses of both the natural (−)‐garsubellin A and its unnatural (+)‐antipode for biological evaluations. The first enantioselective total synthesis of garsubellin A establishes the absolute stereostructure of the plant‐derived meroterpene that enhances the choline acetyltransferase enzyme responsible for the biosynthesis of the neurotransmitter acetylcholine. The 12‐step, protecting group‐free synthesis features use of a dithiolane for efficient construction of the bridged and fused ring system.
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影响因子:
5.2
作者:
Chatterjee, AK;Sanders, DP;Grubbs, RH
通讯作者:
Grubbs, RH
影响因子:
15
作者:
Horeischi, Fiene;Biber, Nicole;Plietker, Bernd
通讯作者:
Plietker, Bernd
影响因子:
3.6
作者:
Ahmad, Nadia M.;Rodeschini, Vincent;Blake, Alexander J.
通讯作者:
Blake, Alexander J.
影响因子:
3.2
作者:
Ahmad, Nadia M.;Rodeschini, Vincent;Wilson, Claire
通讯作者:
Wilson, Claire
DOI:
10.1039/a802415d
发表时间:
1998-07-07
期刊:
JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 1
影响因子:
--
作者:
Choony, N;Dadabhoy, A;Sammes, PG
通讯作者:
Sammes, PG