NITROGEN-CONTAINING SATURATED HETEROCYCLIC COMPOUND

摘要

The present invention provides a compound represented by the following formula (I) or its pharmaceutically acceptable salt:
[wherein, R 1 represents optionally substituted C 1-4 alkyl, n shows integer of 1 to 4, R 2 represents optionally substituted C 1-4 alkyl or hydrogen atom, R 3 represents optionally substituted C 1-4 alkyl, R 4a , R 4b , R 4c , and R 4d , similarly or differently, represent optionally substituted C 6-14 aryl, optionally substituted C 1-4 alkyl, or hydrogen atom and the like, A represents optionally substituted C 6-14 aryl or optionally substituted 5 to 11 membered heteroaryl].