Integrative Biology Journals

Natural Products and Bioprospecting ›› 2022, Vol. 12 ›› Issue (5): 29-29.DOI: 10.1007/s13659-022-00350-3

• ORIGINAL ARTICLES • Previous Articles     Next Articles

New seco-anthraquinone glucoside from the roots of Rumex crispus

Yong-Xiang Li1,2, Na Li1, Jing-Juan Li1, Man Zhang1, Hong-Tao Zhu1, Dong Wang1, Ying-Jun Zhang1,3   

  1. 1 State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, People's Republic of China;
    2 University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China;
    3 Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
  • Received:2022-05-05 Revised:2022-06-07 Online:2022-10-12 Published:2022-10-24
  • Contact: Ying Jun Zhang,E-mail:zhangyj@mail.kib.ac.cn
  • Supported by:
    This research was supported by Ministry of Science and Technology of the People's Republic of China,2021YFE0103600.

New seco-anthraquinone glucoside from the roots of Rumex crispus

Yong-Xiang Li1,2, Na Li1, Jing-Juan Li1, Man Zhang1, Hong-Tao Zhu1, Dong Wang1, Ying-Jun Zhang1,3   

  1. 1 State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, People's Republic of China;
    2 University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China;
    3 Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
  • 通讯作者: Ying Jun Zhang,E-mail:zhangyj@mail.kib.ac.cn
  • 基金资助:
    This research was supported by Ministry of Science and Technology of the People's Republic of China,2021YFE0103600.

Abstract: A new seco-anthraquinone, crispuside A (1), and three new 3,4-dihydronaphthalen-1(2H)-ones, napthalenones A-C (24), were isolated from the roots of Rumex crispus L., along with 10 known anthraquinones (614) and naphthalenone (5). Their structures were fully determined by extensive spectroscopic analyses, including ECD, and X-ray crystallography in case of compound 5, whose absolute configuration was determined for the first time. The isolates 1, 614 were evaluated for their anti-inflammatory and anti-fungal activity against three skin fungi, e.g., Epidermophyton floccosum, Trichophyton rubrum, and Microsporum gypseum. Most of the isolates showed weak antifungal and anti-inflammatory activity. Only compound 9 exhibited obvious anti-fungal activity against E. floccosum (MIC50 = 2.467 ± 0.03 μM) and M. gypseum ( MIC50 = 4.673 ± 0.077 μM), while the MIC50 values of the positive control terbinafine were 1.287 ± 0.012 and 0.077 ± 0.00258 μM, respectively. The results indicated that simple emodin type anthraquinone is more potential against skin fungi than its oxyglucosyl, C-glucosyl and glycosylated seco analogues.

Key words: Polygonaceae, Rumex crispus L., Anthranoids, Anti-fungal activity

摘要: A new seco-anthraquinone, crispuside A (1), and three new 3,4-dihydronaphthalen-1(2H)-ones, napthalenones A-C (24), were isolated from the roots of Rumex crispus L., along with 10 known anthraquinones (614) and naphthalenone (5). Their structures were fully determined by extensive spectroscopic analyses, including ECD, and X-ray crystallography in case of compound 5, whose absolute configuration was determined for the first time. The isolates 1, 614 were evaluated for their anti-inflammatory and anti-fungal activity against three skin fungi, e.g., Epidermophyton floccosum, Trichophyton rubrum, and Microsporum gypseum. Most of the isolates showed weak antifungal and anti-inflammatory activity. Only compound 9 exhibited obvious anti-fungal activity against E. floccosum (MIC50 = 2.467 ± 0.03 μM) and M. gypseum ( MIC50 = 4.673 ± 0.077 μM), while the MIC50 values of the positive control terbinafine were 1.287 ± 0.012 and 0.077 ± 0.00258 μM, respectively. The results indicated that simple emodin type anthraquinone is more potential against skin fungi than its oxyglucosyl, C-glucosyl and glycosylated seco analogues.

关键词: Polygonaceae, Rumex crispus L., Anthranoids, Anti-fungal activity