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Six polysaccharide‐based chiral stationary phases were screened to separate the enantiomers of six chloro‐containing derivatives and one derivative bearing electron donating mesomeric substituents, chosen for comparison. These compounds are expected to be P2X7 receptor antagonists with potential anti‐inflammatory activity. The study was carried out with four different mobile phases composed of n‐heptane and ethanol or isopropanol. Thus, a total of 168 experiments were implemented to find the best conditions aimed at scaling‐up the separation of these anti‐inflammatory compounds. Chiralpak AD‐H separated half of them, i.e., 1, 2, and 6; Chiralpak AS separated also three out of the six compounds, i.e., 1, 2, and 3; Lux Cellulose‐5 separated 2, 4, and 6; Lux Cellulose‐2 separated 1, 2, and 4; Chiralcel OD‐H separated compounds 2 and 5; and finally Chiralcel OJ separated only 3, thus having the lowest rate of success. Additionally, the influence of (i) the stationary and mobile phases and (ii) the chemical structure of the analytes on retention and resolution was investigated. [ABSTRACT FROM AUTHOR]

In the context of a continuously increasing global cancer risk, the search for new effective and affordable anticancer drugs remains a constant demand. This study describes chemical experimental drugs able to destroy cancer cells by arresting their growth. New hydrazones with quinoline, pyridine, benzothiazole and imidazole moieties have been synthesized and evaluated for their cytotoxic potential against 60 cancer cell lines. 7-Chloroquinolinehydrazones were the most active in the current study and exhibited good cytotoxic activity with submicromolar GI 50 values on a large panel of cell lines from nine tumor types (leukemia, non-small cell lung cancer, colon cancer, CNS cancer, melanoma, ovarian cancer, renal cancer, prostate cancer and breast cancer). This study provided consistent structure-activity relationships in this series of experimental antitumor compounds.