Cucumol B, a new triterpene benzoate from <i>Cucumis melo</i> seeds with cytotoxic effect toward ovarian and human breast adenocarcinoma
作者:Sabrin Ragab Mohamed Ibrahim、Amgad Ibrahim Mansour Khedr、Gamal Abdallah Mohamed、Mohamed Fathalla Zayed、Amal Abd-Elmoneim Soliman El-Kholy、Rwaida Adel Al Haidari
DOI:10.1080/10286020.2018.1488832
日期:2019.11.2
Phytochemical investigation of the methanolic extract of Cucumis melo L. (Cucurbitaceae) seeds furnished a new triterpene benzoate derivative: cucumol B (1) and four known flavonoids: quercetin-3-O-beta -D-glucopyranosyl-(1 -> 6)-alpha -L-rhamnopyranoside (2), quercetin-3-O-beta -D-glucopyranoside (3), quercetin (4), and luteolin (5). Their structures were identified by UV, IR, 1D (C-13 and H-1), 2D (HSQC, H-1-H-1 COSY, HMBC, and NOESY) NMR, and HRESIMS spectral as well as comparing with literature data. Compound 1 has been assessed for the in vitro cytotoxic effect against SKOV-3, MCF-7, and HCT-116 cell lines. It had selective and potent effect toward SKOV-3 and MCF-7 cell lines with IC(50)s 2.05 and 0.41 mu M, respectively, in comparison to doxorubicin (IC(50)s 0.32 and 0.05 mu M). However, it showed moderate activity toward HCT-116 cell line with IC50 8.27 mu M.