1069112-13-5Relevant academic research and scientific papers
Synthesis and SAR of Tetracyclic Inhibitors of Protein Kinase CK2 Derived from Furocarbazole W16
Borgert, Sebastian,Daniliuc, Constantin G.,Ensan, Deeba,Jose, Joachim,Kr?ger, Lukas,Lauwers, Miriam,Nienberg, Christian,Pietsch, Markus,Steinkrüger, Michaela,Wünsch, Bernhard
, p. 871 - 881 (2020)
The serine/threonine kinase CK2 modulates the activity of more than 300 proteins and thus plays a crucial role in various physiological and pathophysiological processes including neurodegenerative disorders of the central nervous system and cancer. The enzymatic activity of CK2 is controlled by the equilibrium between the heterotetrameric holoenzyme CK2α2β2 and its monomeric subunits CK2α and CK2β. A series of analogues of W16 ((3aR,4S,10S,10aS)-4-{[(S)-4-benzyl-2-oxo-1,3-oxazolidin-3-yl]carbonyl}-10-(3,4,5-trimethoxyphenyl)-4,5,10,10a-tetrahydrofuro[3,4-b]carbazole-1,3(3aH)-dione ((+)-3 a)) was prepared in an one-pot, three-component Levy reaction. The stereochemistry of the tetracyclic compounds was analyzed. Additionally, the chemically labile anhydride structure of the furocarbazoles 3 was replaced by a more stable imide (9) and N-methylimide (10) substructure. The enantiomer (?)-3 a (Ki=4.9 μM) of the lead compound (+)-3 a (Ki=31 μM) showed a more than sixfold increased inhibition of the CK2α/CK2β interaction (protein-protein interaction inhibition, PPII) in a microscale thermophoresis (MST) assay. However, (?)-3 a did not show an increased enzyme inhibition of the CK2α2β2 holoenzyme, the CK2α subunit or the mutated CK2α′ C336S subunit in the capillary electrophoresis assay. In the pyrrolocarbazole series, the imide (?)-9 a (Ki=3.6 μM) and the N-methylimide (+)-10 a (Ki=2.8 μM) represent the most promising inhibitors of the CK2α/CK2β interaction. However, neither compound could inhibit enzymatic activity. Unexpectedly, the racemic tetracyclic pyrrolocarbazole (±)-12, with a carboxy moiety in the 4-position, displays the highest CK2α/CK2β interaction inhibition (Ki=1.8 μM) of this series of compounds.
Diastereodivergence and appendage diversity in the multicomponent synthesis of aryl-pyrrolo-tetrahydrocarbazoles
Royer, Daniel,Wong, Yung-Sing,Plé, Sophie,Chiaroni, Angèle,Diker, Khalid,Lévy, Jean
, p. 9607 - 9618 (2008/12/22)
A one-pot approach using a subsequent Cu(II)/Cu(I) catalysis and a highly diastereodivergent three-component reaction allow an easy access to various aryl-pyrrolo-tetrahydrocarbazoles with the control of up to four variable fragments and two different diastereoselectivities.
