The present invention relates to an azabicycloamine compound of the formula (I) and the salts thereof:
 wherein:
   R is a hydrogen or an amine protecting group;
   R₁ and R₂, which may be the same or different, are hydrogen, optionally substituted lower alkyl, alkanoyl, optionally substituted benzoyl or naphthoyl, optionally substituted alkoxycarbonyl, or optionally substituted benzyloxycarbonyl; and
   n is an integer from 1 to 4.
                            本发明涉及一种式(I)的
氮杂双环胺化合物及其盐:其中:R是氢或胺保护基;R₁和R₂,可以相同也可以不同,是氢、可选择取代的较低烷基、烷酰基、可选择取代的苯甲酰基或
萘甲酰基、可选择取代的烷氧羰基,或可选择取代的苄氧羰基;n是从1到4的整数。