Provision of the manufacture and use of these methods, as well as compounds, and a proton pump excellent action, indicating the anti-ulcer action and the like are converted to a proton pump inhibitor in vivo. Formula: Wherein is as defined herein each symbol is] is represented by the pyrrolo [2,3-c] pyridine compounds.優れたプロトンポンプ作用を有し、生体内でプロトンポンプ阻害剤に変換されて抗潰瘍作用等を示す化合物、ならびにこれらの製造方法および用途の提供。式:[式中、各記号は、本明細書中で定義される通りである]で表されるピロロ[2,3-c]ピリジン化合物。