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  • Title: Morindaquinone, a new bianthraquinone from Morinda coreia roots.
    Author: Chokchaisiri S, Siriwattanasathien Y, Thongbamrer C, Suksamrarn A, Rukachaisirikul T.
    Journal: Nat Prod Res; 2021 Oct; 35(20):3439-3445. PubMed ID: 31876434.
    Abstract:
    Phytochemical investigation of the roots of Morinda coreia led to the isolation of one new bianthraquinone, morindaquinone (1), together with 12 known compounds, soranjidiol (2), rubiadin-1-methyl ether (3), 2-methoxy-1,3,6-trihydroxyanthraquinone (4), 1-hydroxy-2-methylanthraquinone (5), tectoquinone (6), nordamnacanthal (7), damnacanthal (8), 2-formylanthraquinone (9), 3-hydroxy-2-hydroxymethylanthraquinone (10), lucidin-ω-methyl ether (11), scopoletin (12) and (+)-mellein (13). The structures of these compounds were determined on the basis of extensive spectroscopic analyses, as well as by comparison with literature reports. Compound 1 was the first example of bianthraquinone found in the genus Morinda, whereas compound 13 was firstly isolated from this genus. Among them, compounds 2, 7, 8 and 10 exhibited moderate to weak cytotoxicity against human cervical (HeLa), human colon (HT 29) and human breast (MCF-7) cell lines, while compounds 6 and 9 - 11 showed weak anti-acetylcholinesterase activity.
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