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ICBMS, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, Laboratoire de Catalyse et Synthèse Organique, 43 boulevard du 11 novembre 1918, Villeurbanne, F-69622, France.
Some (1,3')-bis-tetrahydroisoquinolines were reported as scaffold intermediates for the synthesis of pentacyclic piperazine core alkaloids and their cytotoxicity against cancerous cell lines was evaluated. The NMR and X-ray structural assignments revealed an anti C3-C11 backbone stereochemistry of piperazine structures. Inhibition of cancer cell proliferation of (1,3')-bis-tetrahydroisoquinoline scaffolds and pentacyclic piperazine systems was assessed against three human cancer cell lines (K562 myelogenous leukemia, A549 lung carcinoma, MCF-7 breast adenocarcinoma) and both mouse tumor cell lines of blood (P388) and lymphocytic (L1210) leukemia with considerable activity against the latter. The cell cycle analysis was also studied by flow cytometry measurement on K562 cell line.
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