European Journal of Medicinal Chemistry p. 1942 - 1958 (2018)
Update date:2022-08-15
Topics:
Lin, You-Yu
Chan, She-Hung
Juang, Yu-Pu
Hsiao, Hsin-Min
Guh, Jih-Hwa
Liang, Pi-Hui
A series of N-acyl, N-alkoxycarbonyl, and N-alkylcarbamoyl derivatives of 2′-deoxy-glucosyl bearing oleanolic saponins were synthesized and evaluated against HL-60, PC-3, and HT29 tumor cancer cells. The SAR studies revealed that the activity increased in order of conjugation of 2′ -amino group with carbamate > amide > urea derivatives. Lengthening the alkyl chain increased the cytotoxicity, the peak activity was found to around heptyl to nonyl substitutions. 2′-N-heptoxycarbonyl derivative 56 was found to be the most cytotoxic (IC50 = 0.76 μM) against HL-60 cells. Due to the interesting SARs of alkyl substitutions, we hypothesized that their location in the cell was different, and pursued a location study using 2′-(4″-pentynoylamino) 2′-deoxy-glucosyl OA, which suggested that these compounds distributed mainly in the cytosol.
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