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Synthesis, Antiproliferative and Antifungal Activities of 1,2,3-Triazole-Substituted Carnosic Acid and Carnosol Derivatives
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Synthesis, Antiproliferative and Antifungal Activities of 1,2,3-Triazole-Substituted Carnosic Acid and Carnosol Derivatives
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Synthesis, Antiproliferative and Antifungal Activities of 1,2,3-Triazole-Substituted Carnosic Acid and Carnosol Derivatives
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Journal Article
Synthesis, Antiproliferative and Antifungal Activities of 1,2,3-Triazole-Substituted Carnosic Acid and Carnosol Derivatives
2015
Overview
Abietane diterpenes exhibit an array of interesting biological activities, which have generated significant interest among the pharmacological community. Starting from the abietane diterpenes carnosic acid and carnosol, twenty four new triazole derivatives were synthesized using click chemistry. The compounds differ in the length of the linker and the substituent on the triazole moiety. The compounds were assessed as antiproliferative and antifungal agents. The antiproliferative activity was determined on normal lung fibroblasts (MRC-5), gastric epithelial adenocarcinoma (AGS), lung cancer (SK-MES-1) and bladder carcinoma (J82) cells while the antifungal activity was assessed against Candida albicans ATCC 10231 and Cryptococcus neoformans ATCC 32264. The carnosic acid γ-lactone derivatives 1–3 were the most active antiproliferative compounds of the series, with IC50 values in the range of 43.4–46.9 μM and 39.2–48.9 μM for MRC-5 and AGS cells, respectively. Regarding antifungal activity, C. neoformans was the most sensitive fungus, with nine compounds inhibiting more than 50% of its fungal growth at concentrations ≤250 µg∙mL−1. Compound 22, possessing a p-Br-benzyl substituent on the triazole ring, showed the best activity (91% growth inhibition) at 250 µg∙mL−1 In turn, six compounds inhibited 50% C. albicans growth at concentrations lower than 250 µg∙mL−1.
Publisher
MDPI AG,MDPI
Subject
/ Antifungal Agents - chemical synthesis
/ Antifungal Agents - chemistry
/ Antifungal Agents - pharmacology
/ Candida albicans - drug effects
/ carnosol
/ Cell Proliferation - drug effects
/ Cryptococcus neoformans - drug effects
/ Diterpenes, Abietane - chemical synthesis
/ Diterpenes, Abietane - chemistry
/ Diterpenes, Abietane - pharmacology
/ Humans
/ Plant Extracts - chemical synthesis
/ Plant Extracts - pharmacology
/ Structure-Activity Relationship
