Journal of Tropical Oceanography ›› 2023, Vol. 42 ›› Issue (3): 174-185.doi: 10.11978/2022140CSTR: 32234.14.2022140

• Marine Geology • Previous Articles     Next Articles

Design, synthesis and cytotoxicity of novel glycosyl-2, 5-diketopiperazine derivatives

LIAO Shengrong1,2(), XU Huayan3, LI Xiaolin1,2, LIU Yonghong1,2,3()   

  1. 1. Key Laboratory of Tropical Marine Bio-resources and Ecology (South China Sea Institute of Oceanology, Chinese Academy of Sciences), Guangzhou 510301, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
    3. Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
  • Received:2022-06-21 Revised:2022-08-01 Online:2023-05-10 Published:2022-08-18
  • Supported by:
    National Natural Science Foundation of China(82073762); Guangdong Basic and Applied Basic Research Foundation(2020A1515011045)

Abstract:

Exploring the cytotoxic compounds from marine natural products is one of the most important tasks for the discovery of anticancer agent in recent years. In this study, based on the marine natural product Piperafizine B, fourteen novel glycosyl-2, 5-diketopiperazine derivatives (1a-i, 2a-f) have been designed and synthesized by the glycosylation on the side phenol group at the 6-position of the 2, 5-diketopiperizine ring. The solubilities of the derivatives are obviously improved in both DMSO (dimethyl sulfoxide, 1.5~27.9mg·mL-1) and phosphate buffer (0.1~0.9mg·mL-1, pH=7.4). The cytotoxicity results show that some of the derivatives present good activities with the IC50 values ranging from 1.0~9.1μmol·L-1, and exhibit selective inhibitory activities on Huh-7 cell lines. Among the derivatives, compound 1c has the best inhibitory abilities on the cell lines K562, A549 and Huh-7 with an IC50 values at 1.0, 3.6 and 3.3μmol·L-1, respectively, while compounds 2a-f have no observable cytotoxicity.

Key words: marine natural product, 2, 5-dikeropiperazine derivative, glucose, modification, cytotoxicity