kamal kumar

Synthesis designs to create structurally diverse and natural-product based ring-systems


Phone: +49 (231) 133 - 2480
Fax:+49 (231) 133 - 2499

Research interests

My research addresses synthetic challenges in building collection of structurally intriguing and complex small molecules by engaging innovative modes of multiple bond forming chemical transformations in stereoselective manner. In many cases, the structural targets are based on the scaffolds existing in natural products; however, I am equally interested in scaffold diversity synthesis approaches that can easily and efficiently build a number of distinct, complex and novel molecular frameworks affording a range of structurally rich focused small molecule collections. Biological screening of small molecules from these synthesis approaches and identification of modulators of biological function/phenotype then marks the beginning of a long journey of understanding their mode of action, cause of phenotype induction and the target identification. The potential of these hits can be further polished when possible to provide starting points for medicinal chemistry campaigns and drug discovery.

Figure 1: Schematic presentation of the research themes in the Kumar group. Various causes lead to developments in synthetic methodology of novel small molecules which make up a structurally rich compound collection. Exposure of these molecules to diverse biological screenings provides starting points for either medicinal chemistry or chemical biology programs.

Selected publications

ORCID List> PubMed List>

Lee YC, Patil S, Golz C, Strohmann C, Ziegler S, Kumar K, Waldmann H (2017). A ligand-directed divergent catalytic approach to establish structural and functional scaffold diversity. Nat Commun 8:14043
doi: 10.1038/ncomms14043.

Kumar K, Jayakumar S, Louven K, Strohmann C (2017). A Tunable and Enantioselective Hetero-Diels-Alder Reaction Provides Access to Distinct Piperidinoyl Spirooxindoles. Angew Chem Int Ed Engl
doi: 10.1002/anie.201708355.

Laraia L, Ohsawa K, Konstantinidis G, Robke L, Wu YW, Kumar K, Waldmann H (2017). Discovery of Novel Cinchona-Alkaloid-Inspired Oxazatwistane Autophagy Inhibitors. Angew Chem Int Ed Engl 56(8):2145-2150.
doi: 10.1002/anie.201611670.

Sankar, M. G., Garcia-Castro, M., Golz, C., Strohmann, C. & Kumar K. (2016). Engaging Allene Derived Zwitterions in an Unprecedented Mode of Asymmetric [3+2]-Annulation Reaction. Angew Chem Int Ed doi: 10.1002/anie.201603936.

Danda A, Kesava-Reddy N, Golz C, Strohmann C & Kumar K (2016). Asymmetric Roadmap to Diverse Polycyclic Benzopyrans via 2 Phosphine-Catalyzed Enantioselective [4 + 2]-Annulation Reaction. Org. Lett doi: 10.1021/acs.orglett.6b01030.

Garcia-Castro M, Kremer L, Reinkemeier CD, Unkelbach C, Strohmann C, Ziegler S, Ostermann C. & Kumar K (2015). De novo branching cascades for structural and functional diversity in small molecules. Nat Commun 6:6516 doi: 10.1038/ncomms7516.

Wang Y, Bauer JO, Strohmann C, & Kumar K (2014). A Bioinspired Catalytic Oxygenase Cascade to Generate Complex Oxindoles. Angew Chem Int Ed 53, 7514-18. doi: 10.1002/anie.201403415

Dakas P-Y, Parga JA, Höing S, Schöler HR, Sterneckert J, Kumar K & Waldmann H (2013). Discovery of Neuritogenic Compound Classes Inspired by Natural Products. Angew Chem Int Ed 52, 9576 –95813. doi: 10.1002/anie.201302045

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