Synthesis and Structure−Activity Relationships of Pyrazine-Pyridine Biheteroaryls as Novel, Potent, and Selective Vascular Endothelial Growth Factor Receptor-2 Inhibitors
摘要:
There is much evidence that direct inhibition of the kinase activity of vascular endothelial growth factor receptor-2 (VEGFR-2) will result in the reduction of angiogenesis and the suppression of tumor growth. Palladium-catalyzed C-C bond, C-N bond formation reactions were used to assemble various pyrazine-pyridine biheteroaryls as potent VEGFR-2 inhibitors. Among them, 4-{5-[6-(3-chloro-phenylamino)-pyrazin-2-yl]-pyridin-3-ylamino}-butan-1-ol (39) and N-{5-[6-(3-chloro-phenylamino)-pyrazin-2-yl]-pyridin-3-yl}-N ',N '-dimethyl-ethane-1,2-diamine (41) exhibited the highest kinase selectivity against fibroblast growth factor receptor kinase, platelet-derived growth factor receptor kinase, and glycogen synthase kinase-3. All of these compounds showed good cellular potency to inhibit VEGF-stimulated proliferation of human umbilical vein endothelial cells (HUVEC) but with modest effects on the unstimulated growth of HUVEC. The low inhibition of these compounds to the growth of tumor cell lines, such as HeLa, HCT-116, and A375 further confirms that these VEGFR-2 inhibitors are not cytotoxic agents. The in vivo antitumor activity of 39 and 41 were demonstrated in the A375 human melanoma xenograft nude mice model. Molecular modeling (QSAR analysis) was conducted in an attempt to rationalize the observed structure-activity relationship.
Nickel/Cobalt-Catalyzed C(sp<sup>3</sup>)–C(sp<sup>3</sup>) Cross-Coupling of Alkyl Halides with Alkyl Tosylates
作者:Kimihiro Komeyama、Takuya Michiyuki、Itaru Osaka
DOI:10.1021/acscatal.9b03352
日期:2019.10.4
The C(sp3)–C(sp3) cross-coupling of alkyl halides with alkyl tosylates has been developed by employing a combination of nickel and nucleophilic cobalt catalysts in the presence of a manganese reductant. This method provides a straightforward route to a diverse set of not only secondary–primary but also primary–primary C(sp3)–C(sp3) linkages under mild conditions without using alkyl-metallic reagents
The invention relates to a diphenylmethylene piperidine derivative of the formula ##STR1## wherein n is 1 or 2; or a pharmaceutically acceptable salt thereof, for use in therapy, in particular for use as a dopamine antagonist for the treatment or prophylaxis of psychotic disorders.
[EN] DIPHENYLMETHYLENE PIPERIDINE DERIVATIVES<br/>[FR] DERIVES DE DIPHENYLMETHYLENE PIPERIDINE
申请人:AKZO NOBEL N.V.
公开号:WO1997003065A1
公开(公告)日:1997-01-30
(EN) The invention relates to a diphenylmethylene piperidine derivative of formula (I), wherein n is 1 or 2; or a pharmaceutically acceptable salt thereof, for use in therapy, in particular for use as a dopamine antagonist for the treatment or prophylaxis of psychotic disorders.(FR) L'invention concerne un dérivé de diphénylméthylène pipéridine de la formule (I) dans laquelle n vaut 1 ou 2, ou un sel de ce dérivé acceptable sur le plan pharmacologique. Ce dérivé est utile en thérapie, notamment en tant qu'antagoniste de la dopamine dans le traitement ou la prophylaxie de troubles psychotiques.
This disclosure relates to new heterocyclic compounds that may be used to modulate a histamine receptor in an individual. Pyrido[3,4-b]indoles are described, as are pharmaceutical compositions comprising the compounds and methods of using the compounds in a variety of therapeutic applications, including the treatment of a cognitive disorder, psychotic disorder, neurotransmitter-mediated disorder and/or a neuronal disorder.