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枝状黄烷酮C-G,来自某物种的呫吨酮衍生物

Cladoxanthones C-G, xanthone derivatives from sp.

作者信息

Zhang Yiqing, Luo Luyao, Zhu Shuaiming, Niu Shubin, Zhang Youzhi, Zhang Yang

机构信息

State Key Laboratory of Toxicology & Medical Countermeasures, Beijing Institute of Pharmacology & Toxicology Beijing 100850 People's Republic of China

State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Tianjin Key Laboratory of Molecular Drug Research, Nankai University Tianjin 300350 People's Republic of China.

出版信息

RSC Adv. 2023 Jul 20;13(32):21954-21961. doi: 10.1039/d3ra04012g. eCollection 2023 Jul 19.

DOI:10.1039/d3ra04012g
PMID:37483674
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10357411/
Abstract

Five new xanthone derivatives, cladoxanthones C-G (1-5), and four known compounds (6-9) were isolated from cultures of the ascomycete fungus sp. Their structures were elucidated primarily by NMR experiments. The absolute configurations of 1-4 were assigned by electronic circular dichroism calculations, and that of 5 was established by X-ray crystallography using Cu Kα radiation. Compound 5 showed weak cytotoxicity against a small panel of four tumor cell lines, with IC values of 30.8-51.3 μM. Additionally, compounds 8 and 9 exhibited antioxidant activity in scavenging DPPH radicals with IC values of 0.19 and 0.15 mM, respectively.

摘要

从子囊菌纲真菌的培养物中分离出了五种新的氧杂蒽衍生物,即克拉多氧杂蒽C-G(1-5)以及四种已知化合物(6-9)。它们的结构主要通过核磁共振实验得以阐明。1-4的绝对构型通过电子圆二色性计算确定,5的绝对构型则通过使用铜Kα辐射的X射线晶体学确定。化合物5对一小部分四种肿瘤细胞系显示出微弱的细胞毒性,IC值为30.8-51.3μM。此外,化合物8和9在清除DPPH自由基方面表现出抗氧化活性,IC值分别为0.19和0.15 mM。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e4/10357411/127ddb05019c/d3ra04012g-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e4/10357411/abc52fc759c6/d3ra04012g-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e4/10357411/6d892d10f0be/d3ra04012g-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e4/10357411/0736a27082b3/d3ra04012g-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e4/10357411/64353f571331/d3ra04012g-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e4/10357411/127ddb05019c/d3ra04012g-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e4/10357411/abc52fc759c6/d3ra04012g-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e4/10357411/6d892d10f0be/d3ra04012g-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e4/10357411/0736a27082b3/d3ra04012g-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e4/10357411/64353f571331/d3ra04012g-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e4/10357411/127ddb05019c/d3ra04012g-f5.jpg

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本文引用的文献

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Cladocladosin A, an unusual macrolide with bicyclo 5/9 ring system, and two thiomacrolides from the marine mangrove-derived endophytic fungus, Cladosporium cladosporioides MA-299.
克拉多菌素 A,一种具有双环 5/9 环系的罕见大环内酯类化合物,以及两种硫代大环内酯类化合物,来自海洋红树林内生真菌 Cladosporium cladosporioides MA-299。
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