稳定的儿茶酚酮互变异构体在来自海草的细胞毒性杂二聚环二芳基庚烷类化合物中的作用
Stable Catechol Keto Tautomers in Cytotoxic Heterodimeric Cyclic Diarylheptanoids from the Seagrass .
机构信息
Pharmazeutisches Institut, Abteilung Pharmazeutische Biologie, Christian-Albrechts-Universität zu Kiel, Gutenbergstraße 76, 24118, Kiel, Germany.
Dipartimento di Agraria, Università degli Studi di Napoli Federico II, Via Università 100, 80055 Portici (NA), Italy.
出版信息
Org Lett. 2021 Sep 17;23(18):7134-7138. doi: 10.1021/acs.orglett.1c02537. Epub 2021 Sep 7.
Two diarylheptanoid heterodimers, zosterabisphenones A () and B (), were isolated from the seagrass . They feature unprecedented catechol keto tautomers, stable because of steric constraints. Their structure elucidation was based on extensive low-temperature NMR studies and ECD and MS data, with the essential aid of DFT prediction of NMR and ECD spectra. Zosterabisphenone B () was selectively cytotoxic against the adenocarcinoma colon cancer cell line HCT116 with IC 3.6 ± 1.1 μM at 48 h.
两种二芳基庚烷杂二聚体，即藻棕酮 A()和 B()，从海草中分离得到。它们具有前所未有的儿茶酚酮互变异构体，由于空间位阻而稳定。其结构阐明基于广泛的低温 NMR 研究以及 ECD 和 MS 数据，并借助 DFT 预测 NMR 和 ECD 光谱提供了重要帮助。在 48 小时时，藻棕酮 B()对结肠癌细胞系 HCT116 具有选择性细胞毒性，IC 3.6 ± 1.1 μM。
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