Efficient Synthesis of a Benzo[b]furan Building Block
摘要:
Unexpected difficulty in the conversion of a bromobenzofuran to the corresponding formylbenzofuran led us to develop a new synthesis for 5-formylbenzo[b]furan-2-carbonitrile (1).
The present invention provides a compound of formula I, in which R1, R2, X and R3 are defined in the Summary of the Invention, or a pharmaceutically acceptable salt thereof;
a method for manufacturing the compounds of the invention, and its therapeutic uses. The present invention further provides a combination of pharmacologically active agents and a pharmaceutical composition.
The present invention provides a compound of formula I, in which R
1
, R
2
, X and R
3
are defined in the Summary of the Invention, or a pharmaceutically acceptable salt thereof;
a method for manufacturing the compounds of the invention, and its therapeutic uses. The present invention further provides a combination of pharmacologically active agents and a pharmaceutical composition.