The present invention provides a compound of formula (I):wherein R1ais optionally substituted C1-6alkyl, etc.； R1mis hydrogen atom, etc.； G1, G2, G3and G4are the following (i), etc.: (i) G1is -N(R1b)-, G2is -CO-, G3is -C(R1c)(R1d)-, and G4is oxygen atom, etc.； R1bis optionally substituted C1-6alkyl, etc.； R1cand R1dare each independently optionally substituted C1-6alkyl,etc.； R2is optionally substituted C1-6alkyl, etc.； R38, R3b, R3cand R3dare each independently a group: -A-B, in which A is a single bond, etc. and B is hydrogen atom, etc, etc.； n is 1, etc.； and R5is C1-4alkoxycarbonyl, etc., or a pharmaceutically acceptable salt thereof, which is useful as a renin inhibitor.本發明提供一種作為腎素抑制劑而有用之以式(I)所表示之化合物或其藥學上容許之鹽：[式中，R1a為可經取代之C1-6烷基等；R1m為氫原子等；G1、G2、G3及G4為(i)等((i)G1為-N(R1b)-，G2為-CO-，G3為-C(R1c)(R1d)-，以及G4為氧原子等)；R1b為可經取代之C1-6烷基等；R1c及R1d分別獨立為可經取代之C1-6烷基等；R2為可經取代之C1-6烷基等；R3a、R3b、R3c及R3d分別獨立為基：-A-B(A為單鍵等，B為氫原子等)等；n為1等；R5為C1-4烷氧基羰基等]。
