Processes for preparing 6-(difluoromethoxy)[1]benzofuro[3,2-c]pyridine-9-carbaldehyde, a novel intermediate for the synthesis of PDE IV inhibitors
申请人:Gharat Laxmikant Atmaram
公开号:US08524905B2
公开(公告)日:2013-09-03
The present invention relates to novel processes for preparing 6-(difluoromethoxy)[1]benzofuro[3,2-c]pyridine-9-carbaldehyde, which is a novel and useful intermediate for preparing compounds with PDE4 inhibitory activity, such as 3,5-dichloro-4-(6-difluoromethoxybenzo[4,5]furo[3,2-c]pyridin-9-ylcarboxamido)-1-pyridiniumolate.
本发明涉及一种新型工艺,用于制备6-(二氟甲氧基)[1]苯并呋[3,2-c]吡啶-9-甲醛,该化合物是制备具有PDE4抑制活性的化合物的一种新型有用中间体,例如3,5-二氯-4-(6-二氟甲氧基苯并[4,5]呋[3,2-c]吡啶-9-基羧酰胺)-1-吡啶酸盐。