Synthesis and biological evaluation of novel 2-pyridinyl-[1,2,3]triazoles as inhibitors of transforming growth factor β1 type 1 receptor
摘要:
A series of 2-pyridinyl-[1,2,3]triazoles have been synthesized and evaluated for their ALK5 inhibitory activity in the luciferase reporter assays. Compound 8d showed significant ALK5 inhibition (SBE-luciferase activity, 25%; p3TP-luciferase activity, 17%) at a concentration of 5 muM that is comparable to that of SB-431542 (SBE-luciferase activity, 21%; p3TP-luciferase activity, 12%), but weak p38alpha MAP kinase inhibition (13%) at a concentration of 10 muM that is much lower than that of SB-431542 (54%). (C) 2004 Elsevier Ltd. All rights reserved.
Regioselective Synthesis of Polysubstituted N2-Alkyl/Aryl-1,2,3-Triazoles via 4-Bromo-5-iodo-1,2,3-triazole
摘要:
The regioselective N2-substitution of 4-bromo-5-iodo-1,2,3-triazole with alkyl/aryl halides in the presence of K2CO3 in DMF produced the desired 2-substituted 4-bromo-5-iodo-1,2,3-triazoles as a major products in good to excellent regioselectivity. Subsequent chemoselective Suzuki-Miyaura cross-coupling reaction of N2-substituted 4-bromo-5-iodo-1,2,3-triazoles provided polysubstituted 1,2,3-triazoles efficiently.