10.1021/ja5038269
The study presents the development of a series of platinum(IV) prodrugs, specifically designed to enhance interaction with human serum albumin (HSA) for drug delivery purposes. The prodrugs were synthesized by asymmetrically functionalizing the axial ligands to mimic the features of a fatty acid, with the aim of improving cellular uptake and cytotoxicity. The lead compound, 4e, which has a hexadecyl chain, demonstrated a significant therapeutic potential due to its ability to form a tight, non-covalent complex with HSA (complex 7), enhancing its stability in blood and reducing the rate of reduction by ascorbate. The study involved platinum(IV) complexes with varying aliphatic tail lengths, including 4a, 4b, 4c, 4d, and 4e, which were used to investigate the impact of lipophilicity on cellular uptake and cytotoxicity. Other chemicals used included cisplatin as a reference compound, succinic anhydride, isocyanate reagents for the synthesis of the prodrugs, and ascorbate as a biological reductant to study the reduction of the Pt(IV) prodrugs. The purpose of these chemicals was to create a novel class of anticancer prodrugs with improved properties, such as enhanced stability, reduced side effects, and potentially increased efficacy.
10.1021/jm00168a002
The research explores the development and properties of alkylating organoselenones as potential antitumor agents. The study aims to investigate the potential of organoselenones for their high nucleophilic selectivity and their ability to act as biological alkylating agents, which could be useful in cancer treatment. The researchers synthesized various organoselenones and related compounds, including sulfone and aryl haloalkyl selenones (1-6), and tested their chemical kinetic parameters and antiproliferative activities. Key chemicals used in the research include 4-(4-nitrobenzyl)pyridine (NBP) as a model biologic nucleophile, and various nitrogen, sulfur, and selenium compounds for comparison. The study found that organoselenones exhibited desirable properties such as slowed reactivity compared to selenides, high selectivity, and short cross-linking distances similar to cisplatin. The results suggest that these organoselenones could be promising candidates for the development of new antitumor agents with improved selectivity and efficacy.
10.1021/jm0612158
The study investigates the development of a new series of spirodiketopiperazine derivatives for their cytotoxic potential against various human tumor cell lines. The researchers synthesized these compounds by condensing the 3-amino-3(ethoxycarbonyl)-2,3-dihydrothieno[2,3-b]naphtho-4,9-dione system with various amino acids, followed by intramolecular lactamization. The study evaluated the cytotoxic activity of these derivatives against MCF-7 human breast carcinoma and SW 620 human colon carcinoma cell lines, revealing that certain isomers derived from Proline (Pro), Cysteine (Cys), and Methionine (Met) exhibited cytotoxic potency comparable to or greater than that of doxorubicin. The study also explored the topoisomerase II inhibition activity and DNA-binding properties of these compounds. The results suggest that these derivatives could potentially circumvent multiple-drug resistance mechanisms and have significant cytotoxic effects on various tumor cell lines, including those resistant to doxorubicin and cisplatin.