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Synthesis and Biological Evaluation of Novel 1-Alkyltryptophan Analogs as Potential Antitumor Agents
Department of Nuclear Medicine, Peking Union Medical College & Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, Beijing 100730, China
Department of Chemistry, Tsinghua University, Beijing 100084, China
Department of Pathology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
* Author to whom correspondence should be addressed.
Received: 28 November 2009; in revised form: 16 December 2009 / Accepted: 17 December 2009 / Published: 18 December 2009
Abstract: To seek novel antitumor agents, we designed and synthesized new 1-tryptophan analogs based on tryptophan catabolism. 1-Alkyltryptophan analogues including 1-ethyltryptophan (1-ET), 1-propyltryptophan (1-PT), 1-isopropyltryptophan (1-isoPT) and 1-butyltryptophan (1-BT) were synthesized from tryptophan. We examined whether those compounds had the antiproliferative effects on SGC7901 and HeLa cells line by using MTT assay in vitro, respectively. Compared to tryptophan, all targeted compounds efficiently inhibited proliferation of two cancer cell lines at 2 mmol/L for 48 hours. Among these tryptophan analogs, 1-BT showed the most powerful cytotoxicity against SGC7901 and HeLa cells at 1 mmol/L and 2 mmol/L concentration. These data suggest that some specific tryptophan analogs could be developed as potential anti-neoplastic agents.
Keywords: tryptophan analogs; cytotoxicity; MTT
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MDPI and ACS Style
Sun, T.; Li, Z.-L.; Tian, H.; Wang, S.-C.; Cai, J. Synthesis and Biological Evaluation of Novel 1-Alkyltryptophan Analogs as Potential Antitumor Agents. Molecules 2009, 14, 5339-5348.
Sun T, Li Z-L, Tian H, Wang S-C, Cai J. Synthesis and Biological Evaluation of Novel 1-Alkyltryptophan Analogs as Potential Antitumor Agents. Molecules. 2009; 14(12):5339-5348.
Sun, Ting; Li, Zhao-Long; Tian, Hua; Wang, Shih-Chen; Cai, Jiong. 2009. "Synthesis and Biological Evaluation of Novel 1-Alkyltryptophan Analogs as Potential Antitumor Agents." Molecules 14, no. 12: 5339-5348.