Synthesis and bioevaluation of N-(arylalkyl)-homospermidine conjugates
摘要:
N'-(Arylalkyl)homospermidines (Ic-1f) and terminally piperazine-substituted homospermidine conjugates (2a-2e) were synthesized and evaluated for cytotoxicity in mouse leukemia L 1210, alpha-difluorometliylornithine (DFMO)-treated L 12 10, melanoma B 16, spermidine (SPD)-treated B 16, and HeLa cell lines. Results demonstrated that homospermidine was a more effective vector than piperazine-substituted homospermidine in ferrying diverse arenes into cells via the polyamine transporter. The leading compound, 9-anthracenemethyl-homospermidine (1a), was shown to induce apoptosis in B16 cells and IL-3 dependent FL5.12A proB cells. The novel conjugate 4-biphenylmethyl-homospermidine (1e) could also induce apoptosis. However, it exhibited different effect on the cell cycle of B16 cells compared to la. (c) 2007 Elsevier Ltd. All rights reserved.
Triol-promoted activation of C–F bonds: Amination of benzylic fluorides under highly concentrated conditions mediated by 1,1,1-tris(hydroxymethyl)propane
Activation of the C-F bond of benzylic fluorides was achieved using 1,1,1-tris(hydroxymethyl)propane (2) as a hydrogen bond-donating agent. Investigations demonstrated that hydrogen bond-donating solvents are promoting the activation and hydrogen bond-accepting ones are hindering it. However, the reaction is best run under highly concentrated conditions, where solvents cannot interfere with the interaction
Palladium- and Nickel-Catalyzed Cross-Couplings of Unsaturated Halides Bearing Relatively Acidic Protons with Organozinc Reagents
作者:Georg Manolikakes、Carmen Muñoz Hernandez、Matthias A. Schade、Albrecht Metzger、Paul Knochel
DOI:10.1021/jo8015852
日期:2008.11.7
aryl, heteroaryl, alkyl, and benzylic zinc reagents were coupled with unsaturated aryl halides bearing an acidic NH or OH proton, using Pd(OAc)2 (1 mol %) and S-Phos (2 mol %) as catalyst without the need of protecting groups. A similar nickel-catalyzed reaction is described. The relative kinetic basicity of organozinc compounds as well as their stability toward acidic protons is also described.
[EN] INHIBITING OTUB1<br/>[FR] INHIBITION DE L'OTUB1
申请人:INTEGRAL EARLY DISCOVERY INC
公开号:WO2020223551A1
公开(公告)日:2020-11-05
The present disclosure is directed to compounds of formulas (I) - (VII), which are useful as modulators of OTUB1. The compounds are further useful in the inhibition of OTUB1 and the treatment of diseases or disorders associated with the inhibition of OTUB1. For instance, the disclosure is concerned with compounds and compositions for inhibition of OTUB1, methods of treating diseases associated with the inhibition of OTUB1 (e.g., inflammatory diseases like irritable bowel disease and Lupus), and methods of synthesis of these compounds.
Synthesis of Amines by the Intermolecular Schmidt Reaction of Aliphatic Azides with Carbocations
作者:William H. Pearson、Wen-kui Fang
DOI:10.1021/jo00121a001
日期:1995.8
Synthesis and bioevaluation of N-(arylalkyl)-homospermidine conjugates
作者:Songqiang Xie、Pengfei Cheng、Guangchao Liu、Yuangfang Ma、Jin Zhao、Mounir Chehtane、Annette R. Khaled、Otto Phanstiel、Chaojie Wang
DOI:10.1016/j.bmcl.2007.06.009
日期:2007.8
N'-(Arylalkyl)homospermidines (Ic-1f) and terminally piperazine-substituted homospermidine conjugates (2a-2e) were synthesized and evaluated for cytotoxicity in mouse leukemia L 1210, alpha-difluorometliylornithine (DFMO)-treated L 12 10, melanoma B 16, spermidine (SPD)-treated B 16, and HeLa cell lines. Results demonstrated that homospermidine was a more effective vector than piperazine-substituted homospermidine in ferrying diverse arenes into cells via the polyamine transporter. The leading compound, 9-anthracenemethyl-homospermidine (1a), was shown to induce apoptosis in B16 cells and IL-3 dependent FL5.12A proB cells. The novel conjugate 4-biphenylmethyl-homospermidine (1e) could also induce apoptosis. However, it exhibited different effect on the cell cycle of B16 cells compared to la. (c) 2007 Elsevier Ltd. All rights reserved.