Lewis Acid‐Catalyzed Tandem Annulation of Propargylic Alcohols with 2‐Allylphenols and Their Anti‐tumor Activities

IF 2.8 4区 化学 Q1 CHEMISTRY, ORGANIC Asian Journal of Organic Chemistry Pub Date : 2024-10-01 DOI:10.1002/ajoc.202400265
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Abstract

A novel bismuth(III) trifluoro‐methanesulfonate‐catalyzed and environmentally benign synthetic strategy for the construction of a wide range of structurally diverse, sophisticated [5,6,5]‐oxygen‐containing tricyclic frameworks with easy‐to handle propargylic alcohols and 2‐allylphenols as substrates in the presence of Bi(OTf)3 and AgOTf is described. This Lewis acid catalyzed [3+2] annulation protocol, which tolerates a great deal of functional groups, proceeds through a sequential Meyer‐Schuster rearrangement, nucleophilic substitution, 5‐exo‐trig cyclization, 5‐endo‐trig cyclization, and proton exchange sequences, affording a versatile approach for accessing oxygen‐containing tricyclic skeletons in moderate‐to‐excellent yields. In addition, most of the obtained compounds exhibited anti‐tumor activities against three types of human cancer cell lines in vitro, including Caco‐2 colon cancer cells, MCF‐7 breast cancer cells, and Hepg‐2 liver cancer cells.
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路易斯酸催化的丙炔醇与 2-烯丙基苯酚的串联嵌段反应及其抗肿瘤活性
本文介绍了一种新型的三氟甲磺酸铋(III)催化和无害环境的合成策略,该策略可在 Bi(OTf)3 和 AgOTf 的存在下,以易于处理的丙炔醇和 2-烯丙基苯酚为底物,构建结构多样、复杂的 [5,6,5]- 含氧三环框架。这种路易斯酸催化的[3 + 2]环化协议可容忍大量的官能团,通过依次进行的迈耶-舒斯特重排、亲核取代、5-外-三环化、5-内-三环化和质子交换序列,提供了一种以中等至优异收率获得含氧三环骨架的多功能方法。此外,所获得的大多数化合物在体外对三种人类癌细胞系(包括 Caco-2 结肠癌细胞、MCF-7 乳腺癌细胞和 Hepg-2 肝癌细胞)具有抗肿瘤活性。
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来源期刊
CiteScore
4.70
自引率
3.70%
发文量
372
期刊介绍: Organic chemistry is the fundamental science that stands at the heart of chemistry, biology, and materials science. Research in these areas is vigorous and truly international, with three major regions making almost equal contributions: America, Europe and Asia. Asia now has its own top international organic chemistry journal—the Asian Journal of Organic Chemistry (AsianJOC) The AsianJOC is designed to be a top-ranked international research journal and publishes primary research as well as critical secondary information from authors across the world. The journal covers organic chemistry in its entirety. Authors and readers come from academia, the chemical industry, and government laboratories.
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