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通过区域选择性分子间氧化苯酚偶联实现(-)-二氢愈创木脂素的全合成。

Total Synthesis of (-)-Dimatairesinol via Regioselective Intermolecular Oxidative Phenol Coupling.

作者信息

Chatpreecha Rungrawin, Leowanawat Pawaret, Kuhakarn Chutima, Reutrakul Vichai, Soorukram Darunee

机构信息

Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand.

Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand.

出版信息

Org Lett. 2025 Jul 25;27(29):7756-7761. doi: 10.1021/acs.orglett.5c01942. Epub 2025 Jul 10.

DOI:10.1021/acs.orglett.5c01942
PMID:40639950
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12305652/
Abstract

We report the total synthesis of (-)-dimatairesinol, a new dimeric natural lignan possessing a unique interconvertible biaryl skeleton coupled at C-5/C-5 of two units of dibenzyl γ-butyrolactone lignan, namely, matairesinol. The key step involved high regioselective formation of a C-5/C-5 biaryl bond between two units of chiral phenolic γ-butyrolactone (R = H) via a direct and metal-free oxidative phenol coupling mediated by PIFA. On the contrary, C-6/C-6 biaryl coupling exclusively took place when nonphenolic γ-butyrolactones (R ≠ H) were employed, providing the corresponding biaryl products as atropisomers. Synthetic manipulations on the C-5/C-5-biaryl intermediate led to (-)-dimatairesinol.

摘要

我们报道了(-)-二马特雷辛醇的全合成,它是一种新型二聚体天然木脂素,具有独特的可相互转化的联芳基骨架,在两个二苄基γ-丁内酯木脂素单元(即马特雷辛醇)的C-5/C-5处相连。关键步骤涉及通过PIFA介导的直接无金属氧化酚偶联,在手性酚γ-丁内酯(R = H)的两个单元之间高区域选择性地形成C-5/C-5联芳基键。相反,当使用非酚γ-丁内酯(R≠H)时,仅发生C-6/C-6联芳基偶联,提供相应的作为阻转异构体的联芳基产物。对C-5/C-5-联芳基中间体进行合成操作得到了(-)-二马特雷辛醇。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/41d7/12305652/c258ef6d3c5c/ol5c01942_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/41d7/12305652/c9de2ac67dff/ol5c01942_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/41d7/12305652/635eca07cda2/ol5c01942_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/41d7/12305652/f2aa06fcd767/ol5c01942_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/41d7/12305652/d21d1ce5a9e6/ol5c01942_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/41d7/12305652/c23f0479f38f/ol5c01942_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/41d7/12305652/c258ef6d3c5c/ol5c01942_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/41d7/12305652/c9de2ac67dff/ol5c01942_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/41d7/12305652/635eca07cda2/ol5c01942_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/41d7/12305652/f2aa06fcd767/ol5c01942_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/41d7/12305652/d21d1ce5a9e6/ol5c01942_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/41d7/12305652/c23f0479f38f/ol5c01942_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/41d7/12305652/c258ef6d3c5c/ol5c01942_0006.jpg

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本文引用的文献

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