Facile synthesis of 4-aryl and alkyl substituted, N 6 -alkylated pyridazine-3,6-diamines
摘要:
Substituted pyridazine-3,6-diamines are attractive but poorly precedented scaffolds in medicinal chemistry and are challenging targets in terms of synthetic tractability. In the following communication we report the use of a Buchwald protocol for the facile synthesis of 4-aryl and alkyl substituted, N-6-alkylated pyridazine-3,6-diamines. This approach utilises the unreactive nature of the pyridazine 3-amino group, negating the need for an additional protecting group in the transformation. The relevant precursors were prepared by selective Suzuki or Negishi transformations using commercially available 4-bromo-6-chloro-3-pyridazinamine. (C) 2015 Elsevier Ltd. All rights reserved.
Facile synthesis of 4-aryl and alkyl substituted, N 6 -alkylated pyridazine-3,6-diamines
摘要:
Substituted pyridazine-3,6-diamines are attractive but poorly precedented scaffolds in medicinal chemistry and are challenging targets in terms of synthetic tractability. In the following communication we report the use of a Buchwald protocol for the facile synthesis of 4-aryl and alkyl substituted, N-6-alkylated pyridazine-3,6-diamines. This approach utilises the unreactive nature of the pyridazine 3-amino group, negating the need for an additional protecting group in the transformation. The relevant precursors were prepared by selective Suzuki or Negishi transformations using commercially available 4-bromo-6-chloro-3-pyridazinamine. (C) 2015 Elsevier Ltd. All rights reserved.
This invention relates to novel 1,2-pyridazines, 1,6-pyridazines or pyrimidines of the formula
wherein B
1
to B
3
and R
1
to R
7
are as defined in the description and in the claims, as well as pharmaceutically acceptable salts thereof. These compounds are GPBAR1 agonists and may therefore be useful as medicaments for the treatment of diseases such as type II diabetes.
[EN] 1,2- PYRIDAZINE, 1,6- PYRIDAZINE OR PYRIMIDINE - BENZAMIDE DERIVATIVES AS GPBAR1 MODULATORS<br/>[FR] DÉRIVÉS DE 1,2-PYRIDAZINE, 1,6-PYRIDAZINE OU PYRIMIDINE-BENZAMIDE COMME MODULATEURS DE GPBAR1
申请人:HOFFMANN LA ROCHE
公开号:WO2013149977A1
公开(公告)日:2013-10-10
This invention relates to novel 1,2-pyridazines, 1,6-pyridazines or pyrimidines of the formula I wherein B1 to B3 and R1 to R7 are as defined in the description and in the claims, as well as pharmaceutically acceptable salts thereof. These compounds are GPBAR1 agonists and may therefore be useful as medicaments for the treatment of diseases such as type II diabetes.
This invention relates to novel 1,2-pyridazines, 1,6-pyridazines or pyrimidines of the formula
wherein B1 to B3 and R1 to R7 are as defined in the description and in the claims, as well as pharmaceutically acceptable salts thereof. These compounds are GPBAR1 agonists and may therefore be useful as medicaments for the treatment of diseases such as type II diabetes.