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Novel Glycoconjugates of Diospyrin, a Quinonoid Plant product: Synthesis and Evaluation of Cytotoxicity Against Human Malignant Melanoma (A375) and Laryngeal Carcinoma (Hep2)

IR@IICB: CSIR-Indian Institute of Chemical Biology, Kolkata

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Title Novel Glycoconjugates of Diospyrin, a Quinonoid Plant product: Synthesis and Evaluation of Cytotoxicity Against Human Malignant Melanoma (A375) and Laryngeal Carcinoma (Hep2)
 
Creator Das Sarma, Madhushree
Ghosh, Rina
Patra, Amarendra
Chowdhury, Rajdeep
Chaudhuri, Keya
Hazra, Banasri
 
Subject Molecular & Human Genetics
 
Description Glycoside derivatives of diospyrin (1) were synthesized for the first time, and the cytotoxicity of the novel compounds vis-`a-vis their precursors were evaluated against two human cancer cell lines, viz. malignant melanoma (A375) and laryngeal carcinoma (Hep2). The IC50 values were in the low micromolar range for all the compounds tested, and A375 cells showed comparatively greater sensitivity than Hep2. Most of the compounds exhibited enhanced activity as compared to the plant-derived quinonoid precursor of the series (1), while the aminophenyl mannosyl (6) was found to be the most effective derivative. In A375 cells, 6 (IC50 = 0.02 lM) showed the maximum increase in cytotoxicity (∼35-fold) over that of 1 (IC50 = 0.82 lM). Again, when the glycosides were evaluated at a given concentration (0.1 lM) for their relative capacity to generate ROS from A375 cells, the compound 6 could produce the highest amount of ROS. Incidentally, this derivative also showed a comparatively lower toxicity (IC50 ∼ 41 lM) when tested against normal human peripheral blood mononuclear cells, indicating a fair prospect of its development as a novel chemotherapeutic agent for the treatment of malignant melanoma.
 
Date 2007
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://www.eprints.iicb.res.in/378/1/ORGANIC_%26_BIOMOLECULAR_CHEMISTRY%2C_5__%7B19]%2C_3115%2D3125%2C2007_[126].pdf
Das Sarma, Madhushree and Ghosh, Rina and Patra, Amarendra and Chowdhury, Rajdeep and Chaudhuri, Keya and Hazra, Banasri (2007) Novel Glycoconjugates of Diospyrin, a Quinonoid Plant product: Synthesis and Evaluation of Cytotoxicity Against Human Malignant Melanoma (A375) and Laryngeal Carcinoma (Hep2). Organic & Biomolecular Chemistry, 5 (19). pp. 3115-3125.
 
Relation http://dx.doi.org/10.1039/B707851J
http://www.eprints.iicb.res.in/378/