Design, synthesis, and cytotoxicity evaluation of novel open-chain analogues of antimycin A3 as potential anti-colorectal cancer agents

Ade Arsianti, Fadilah, Kusmardi, Hiroki Tanimoto, Kiyomi Kakiuchi

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Objective: Colorectal cancer is the third most common diagnosed cancer in the world. The aim of this work was to design, to synthesize, and to evaluate the novel open-chain analogues of antimycin A3 as highly potent anti-colorectal cancer agents. Methods: Our analogue synthesis was designed by modifying the nine-membered dilactone moiety of antimycin A3 with a simple open-chain moiety, as well as introducing the stereocenter, and the hydroxyl groups on the side chain of the ester group. The synthesis was conducted through a sequence of reactions from Boc-L-threonine by esterification, amidation, and sharpless asymmetric dihydroxylation. After completion the synthesis, cytotoxicities of the analogues were evaluated as inhibitors of colorectal HCT-116 cells by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide cell proliferation assay. Results: Novel open-chain analogues of antimycin A3 were successfully synthesized in a good yield. The analogues exhibited a greater anticancer activity against colorectal HCT-116 cells than the original antimycin A3 with 50% inhibitory concentrations ranging of 35.0-47.0 μM. The results indicated that the presence of stereocenter and a hydroxylated open-chain moiety in the analogues were successfully improved its anti-colorectal cancer activity. Conclusion: Our results clearly demonstrate that the opened-chain analogues of antimycin A3 as a promising candidates of new anti-colorectal cancer agents.

Original languageEnglish
Pages (from-to)120-124
Number of pages5
JournalAsian Journal of Pharmaceutical and Clinical Research
Volume8
Issue number6
Publication statusPublished - 1 Jan 2015

Keywords

  • Analogue
  • Anti-colorectal cancer
  • Antimycin A
  • Design
  • Open-chain
  • Synthesis

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