Microwave-assisted synthesis of 3-aminobenzo[b]thiophene scaffolds for the preparation of kinase inhibitors
作者:Mark C. Bagley、Jessica E. Dwyer、Maria D. Beltran Molina、Alexander W. Rand、Hayley L. Rand、Nicholas C. O. Tomkinson
DOI:10.1039/c5ob00819k
日期:——
at 130 °C provides rapid access to 3-aminobenzo[b]thiophenes in 58–96% yield. This transformation has been applied in the synthesis of the thieno[2,3-b]pyridine core motif of LIMK1 inhibitors, the benzo[4,5]thieno[3,2-e][1,4]diazepin-5(2H)-one scaffold of MK2 inhibitors and a benzo[4,5]thieno[3,2-d]pyrimidin-4-one inhibitor of the PIM kinases.
在三乙胺存在下,在130°C的条件下,在三乙胺的存在下对2-卤代苄腈和巯基乙酸甲酯进行微波辐射,可以快速获得3-氨基苯并[ b ]噻吩,产率58-96%。此转化已应用于LIMK1抑制剂噻吩并[2,3- b ]吡啶核心基序,苯并[4,5]噻吩并[3,2- e ] [1,4] diazepin-5(2)的合成中H)-一个MK2抑制剂的支架和PIM激酶的苯并[4,5]噻吩并[3,2 - d ]嘧啶-4-酮抑制剂。