PROCESS FOR THE SYNTHESIS OF 7,8-DIMETHOXY-1,3-DIHYDRO-2H-3-BENZAZEPIN-2-ONE COMPOUNDS, AND APPLICATION IN THE SYNTHESIS OF IVABRADINE

摘要

The present invention relates to a synthesizing method of a compound of chemical formula (1). In the formula, R represents para-methoxybenzyl (PMB) group or a following group. The present invention relates to application in synthesis of addition salts with ivabradine and a pharmaceutically acceptable acid thereof.