文献类型: 外文期刊
作者: Geng, Hui-Chun 1 ; Wang, Xue-Song 1 ; Liao, Yong-Jian 2 ; Qiu, Shi-Yu 2 ; Fang, Hai-Xian 1 ; Chen, Xing-Lian 1 ; Wang, Yun-Mei 1 ; Zhou, Min 2 ;
作者机构: 1.Yunnan Acad Agr Sci, Inst Qual Stand & Testing Technol, Kunming 650223, Yunnan, Peoples R China
2.Yunnan Minzu Univ, Sch Ethn Med, Key Lab Chem Ethn Med Resources, State Ethn Affairs Commiss & Minist Educ, Kunming 650031, Peoples R China
关键词: Lepidium meyenii; Thiohydantoins; Racemic mixtures; Maca; Cytotoxicity
期刊名称:PHYTOCHEMISTRY LETTERS ( 影响因子:1.873; 五年影响因子:1.875 )
ISSN: 1874-3900
年卷期: 2022 年 51 卷
页码:
收录情况: SCI
摘要: Three new thiohydantoins with a 2-thioxoimidazolidin-4-one nucleus, named macathiohydantoins P-R (1-3), along with one known analog (4), were isolated from the roots of Lepidium meyenii. Their structures were elucidated by means of analysis of extensive spectroscopic data, including D-1 NMR, D-2 NMR and HRESIMS. The thiohydantoins (1-4) were isolated as racemic mixtures, which were further separated by chiral semi-preparative HPLC to afford the corresponding enantiomers. Their absolute configuration of C-5 was assigned by comparison of optical rotation values with those reported in the literature. All thiohydantoin derivatives were evaluated for their cytotoxicities against five human cancer cell lines.
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