abstract of the disclosure the present invention relates to the compound of the formula: or pharmaceutically acceptable salts thereof, as well as compositions containing the same, processes for the preparation of the same, and therapeutic methods of use therefore in promoting hydration of mucosal surfaces and the treatment of diseases including chronic obstructive pulmonary disease (COPD), asthma, bronchiectasis, acute and chronic bronchitis, cystic fibrosis, emphysema, and pneumonia. Patent Summary: "Arylalkyl- and aryloxyalkyl-substituted epithelial sodium channel blocking compounds". The present invention relates to a compound of formula: or pharmaceutically acceptable salts thereof, as well as compositions containing the same, processes for the preparation thereof and therapeutic methods of use thereof to promote hydration of mucosal surfaces and the treatment of diseases. including chronic obstructive pulmonary disease (COPD), asthma, bronchiectasis, acute and chronic bronchitis, cystic fibrosis, emphysema and pneumonia.abstract of the disclosure the present invention relates to the compound of the formula: or pharmaceutically acceptable salts thereof, as well as compositions containing the same, processes for the preparation of the same, and therapeutic methods of use therefore in promoting hydration of mucosal surfaces and the treatment of diseases including chronic obstructive pulmonary disease (copd), asthma, bronchiectasis, acute and chronic bronchitis, cystic fibrosis, emphysema, and pneumonia. tradução do resumo resumo patente de invenção: "compostos bloqueadores do canal de sódio epitelial arilalquil- e ariloxialquil-substituídos". a presente invenção se refere a um composto de fórmula: ou sais farmaceuticamente aceitáveis do mesmo, bem como composições contendo o mesmo, processos para o preparo do mesmo e métodos terapêuticos de uso do mesmo para promover a hidratação de superfícies mucosas o tratamento de doenças, incluindo doença pulmonar obstrutiva