Synthesis of variously substituted 3-phenoxymethyl quinoxalin-2-ones and quinoxalines capable to potentiate in vitro the antiproliferative activity of anticancer drugs in multi-drug resistant cell lines.
Two series of 1,6-dimethyl-3-phenoxymethylquinoxalin-2-ones and 1-benzyl-3-phenoxymethyl-7-trifluoromethylquinoxalin-2-ones, and a series of 2-benzyloxy-3-phenoxymethyl-7-trifluoromethylquinoxaline were synthesized. Their capability to restore/potentiate the antiproliferative activity of clinically useful drugs, such as doxorubicin (Doxo), vincristine (VCR) and etoposide (VP16), in drug-resistant human nasopharyngeal carcinoma KB cells (KB(WT), KB(MDR), KB(7D)and KB(V20C)) was evaluated. In vitro data show that many quinoxalin-2-ones and quinoxalines potentiate the antiproliferative activity of Doxo and VCR in tumor-derived MDR cell lines. In this series, 17a turned out to be the most potent quinoxaline derivative in potentiating the antiproliferative activity of doxorubicin and vincristine against KB(MDR) and KB(V20C) resistant cell lines, respectively.
Carta
Antonio
A
Dipartimento Farmaco Chimico Tossicologico, via Muroni 23/a, 07100 Sassari-Italy. acarta@uniss.it
Loriga
Mario
M
Piras
Sandra
S
Paglietti
Giuseppe
G
La Colla
Paolo
P
Busonera
Bernardetta
B
Collu
Gabriella
G
Loddo
Roberta
R
D020168:ATP Binding Cassette Transporter, Subfamily B, Member 1 / Q000037:antagonists & inhibitors / Q000378:metabolism; D000970:Antineoplastic Agents / Q000494:pharmacology*; D002460:Cell Line; D049109:Cell Proliferation / Q000187:drug effects*; D004317:Doxorubicin / Q000494:pharmacology; D018432:Drug Resistance, Multiple; D004357:Drug Synergism; D005047:Etoposide / Q000494:pharmacology; D006801:Humans; D007624:KB Cells; D009369:Neoplasms / Q000473:pathology; D011810:Quinoxalines / Q000138:chemical synthesis* / Q000494:pharmacology*; D014407:Tumor Cells, Cultured; D014750:Vincristine / Q000494:pharmacology
D020168:ATP Binding Cassette Transporter, Subfamily B, Member 1; D000970:Antineoplastic Agents; D011810:Quinoxalines; D014750:Vincristine; D005047:Etoposide; D004317:Doxorubicin