There is provided substantially crystalline forms of 4-({3-[7-(3,3-dimethyl-2-oxobutyl)-9-oxa-3,7-diazabicyclo[3.3.1]non-3-yl]propyl}amino)benzo-nitrile; 2-{7-[3-(4-cyanoanilino)propyl]-9-oxa-3,7-diazabicyclo-[3.3.1]non-3-yl}ethylcarbamate; tert-butyl 2-{7-[4-(4-cyanophenyl)butyl]-9-oxa-3,7-diazabicyclo[3.3.1]non-3-yl}ethylcarbamate; or tert-butyl 2-{7-[(2S)-3-(4-cyanophenoxy)-2-hydroxypropyl]-9-oxa-3,7-diazabicyclo-[3.3.1]non-3-yl}ethylcarbamate and pharmaceutically-acceptable salts thereof, which compounds are useful in the treatment of cardiac arrhythmias.
提供了4-({ 3-[ 7-(3,3-二甲基-2-氧丁基)-9-氧杂-3,7-二氮杂双[3.3.1]非-3-基]丙基}
氨基)苯并腈的实质结晶形式;2-({ 7-[ 3-(4-
氰基
苯胺基)丙基]-9-氧杂-3,7-二氮杂双[3.3.1]非-3-基}
乙基氨基甲酸酯;叔丁基2-({ 7-[ 4-(4-
氰基苯基)丁基]-9-氧杂-3,7-二氮杂双[3.3.1]非-3-基}
乙基氨基甲酸酯;或叔丁基2-({ 7-[(2S)-3-(
4-氰基苯氧基)-2-羟基丙基]-9-氧杂-3,7-二氮杂双[3.3.1]非-3-基}
乙基氨基甲酸酯及其药学上可接受的盐,这些化合物在治疗心律失常方面很有用。