62500-88-3Relevant articles and documents
Antioxydant activity of β-carboline derivatives in the LDL oxidation model
Hadjaz, Fariza,Besret, Soizic,Martin-Nizard, Fran?oise,Yous, Sa?d,Dilly, Sébastien,Lebegue, Nicolas,Chavatte, Philippe,Duriez, Patrick,Berthelot, Pascal,Carato, Pascal
, p. 2575 - 2585 (2011/06/23)
A series of β-carboline compounds were synthesized, starting from compound GWC22, their antioxidant activity was determined by inhibition of lipid peroxidation. The oxidation of LDL was induced in the presence of CuSO 4 or 2,2′-azobis(2-amidinopropane) dihydrochloride (AAPH). The protective actions of these compounds against the cytotoxicity were evaluated with lactate dehydrogenase (LDH) activity in bovine aortic endothelial cells (BAECs) and cellular vitality by measuring mitochondrial activity in the presence of MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide). Most of compounds showed an higher antioxidant activity than GWC22 derivative (R = 1.6 for 5 μM CuSO4). The best antioxidant activities are phenolic and benzyloxy derivatives with ratio R = 1.9 to 2.8 for 1 μM CuSO4. These substances have protective actions and increase significantly the cell viability.
N-methyl-5-tert-butyltryptamine: A novel, highly potent 5-HT(1D) receptor agonist
Xu, Yao-Chang,Schaus, John M.,Walker, Clint,Krushinski, Joe,Adham, Nika,Zgombick, John M.,Liang, Sidney X.,Kohlman, Dan T.,Audia, James E.
, p. 526 - 531 (2007/10/03)
It has been observed that reported 5-HT(1D) receptor agonists have at least one heteroatom (N, O, or S) on the 5-substituent of the indole. This has led to the hypothesis that a 5-substituent capable of participating in hydrogen bonding is critical for conveying high affinity. This article describes the synthesis and biological evaluation of a new series of 5- alkyltryptamine analogues, which does not have a heteroatom in the 5- substituent group. In contrast to the hypothesis, 5-alkyltryptamines all exhibit high binding affinities for the human 5-HT(1D) receptor. The size of the lipophilic alkyl group at the 5-position of the indole has significant impact on the 5-HT(1D) binding affinity. Compounds with a tert-butyl group at the 5-position such as 9d, 10, and 11 were identified. These analogues display high binding affinity (K(i) 1 nM) and moderate receptor selectivity in comparison with known antimigraine agents such as sumatriptan, naratriptan, rizatriptan, and VML-251.