Anticancer Properties of an Important Drug Lead Podophyllotoxin Can Be Efficiently Mimicked by Diverse Heterocyclic Scaffolds Accessible via One-Step Synthesis
作者:Igor V. Magedov、Liliya Frolova、Madhuri Manpadi、Uma devi Bhoga、Hong Tang、Nikolai M. Evdokimov、Olivia George、Kathy Hadje Georgiou、Steffen Renner、Matthäus Getlik、Tiffany L. Kinnibrugh、Manuel A. Fernandes、Severine Van slambrouck、Wim F. A. Steelant、Charles B. Shuster、Snezna Rogelj、Willem A. L. van Otterlo、Alexander Kornienko
DOI:10.1021/jm200410r
日期:2011.6.23
Structural simplification of an antimitotic natural product podophyllotoxin with mimetic heterocyclic scaffolds constructed using multicomponent reactions led to the identification of compounds exhibiting low nanomolar antiproliferative and apoptosis-inducing properties. The most potent compounds were found in the dihydropyridopyrazole, dihydropyridonaphthalene, dihydropyridoindole, and dihydropyridopyrimidine scaffold series. Biochemical mechanistic studies, performed with dihydropyridopyrazole compounds showed that these heterocycles inhibit in vitro tubulin polymerization and disrupt the formation of mitotic spindles in dividing cells at low nanomolar concentrations, in a manner similar to podophyllotoxin itself. Separation of a racemic dihydropyridonaphthalene into individual enantiomers demonstrated that only the optical antipode matching the absolute configuration of podophyllotoxin possessed potent anticancer activity. Computer modeling, performed using the podophyllotoxin binding site on P-tubulin, provided a theoretical understanding of these successful experimental findings.
Polyalkoxybenzenes from Plants. 5. Parsley Seed Extract in Synthesis of Azapodophyllotoxins Featuring Strong Tubulin Destabilizing Activity in the Sea Urchin Embryo and Cell Culture Assays
作者:Marina N. Semenova、Alex S. Kiselyov、Dmitry V. Tsyganov、Leonid D. Konyushkin、Sergei I. Firgang、Roman V. Semenov、Oleg R. Malyshev、Mikhail M. Raihstat、Fabian Fuchs、Anne Stielow、Margareta Lantow、Alex A. Philchenkov、Michael P. Zavelevich、Nikolay S. Zefirov、Sergei A. Kuznetsov、Victor V. Semenov
DOI:10.1021/jm200737s
日期:2011.10.27
targeted molecules were evaluated in vivo in a phenotypic seaurchinembryo assay for antimitotic and tubulin destabilizing activity. The most active compounds identified by the in vivo seaurchinembryo assay featured myristicin-derived ring E (4e, 6e, and 8e). These molecules were determined to be more potent than podophyllotoxin. Cytotoxic effects of selected molecules were further confirmed and evaluated