Structural simplification of bioactive natural products with multicomponent synthesis: Dihydropyridopyrazole analogues of podophyllotoxin
作者:Igor V. Magedov、Madhuri Manpadi、Elena Rozhkova、Nikolai M. Przheval’skii、Snezna Rogelj、Scott T. Shors、Wim F.A. Steelant、Severine Van slambrouck、Alexander Kornienko
DOI:10.1016/j.bmcl.2006.11.095
日期:2007.3
aliphatic aldehydes leads to the formation of dihydropyridopyrazole analogues of a cytotoxic lignan podophyllotoxin. This new heterocyclic scaffold-based library allows a drastic reduction of the structural complexity of the naturalproduct with the retention of its potent cytotoxic properties. Similarly to podophyllotoxin, the presented analogues induce apoptosis in Jurkat cells.
Discovery and Investigation of Antiproliferative and Apoptosis-Inducing Properties of New Heterocyclic Podophyllotoxin Analogues Accessible by a One-Step Multicomponent Synthesis
作者:Igor V. Magedov、Madhuri Manpadi、Severine Van slambrouck、Wim F. A. Steelant、Elena Rozhkova、Nikolai M. Przheval'skii、Snezna Rogelj、Alexander Kornienko
DOI:10.1021/jm070528f
日期:2007.10.1
Podophyllotoxin has been extensively used as a lead agent in the development of new anticancer drugs. On the basis of the previously reported simplified 4-aza-2,3-didehydro podophyllotoxin analogues, we implemented a bioisosteric replacement of the methylenedioxybenzene subunit with a pyrazole moiety to afford tetracyclic dihydropyridopyrazoles. Libraries of these structurally simple analogues are prepared by a straightforward one-step multicomponent synthesis and demonstrated to display antiproliferative properties in a number of human cancer cell lines. These new heterocycles potently induce apoptosis in cancerous Jurkat cells even after a short 24 h exposure. In contrast, no apoptosis is detected in primary lymphocytes under the same treatment conditions. The ease of synthesis and encouraging biological activities make the presented library of dihydropyridopyrazoles promising new leads in anticancer drug design.