NEW HETEROCYCLIC SYSTEMS BASED ON 1-HYDRAZINO-5,6,7,8-TETRAHYDRO[2,7]NAPHTHYRIDINE: 7,8,9,10-TETRAHYDRO[1,2,4]TRIAZOLO[3,4- a ]- AND 7,8,9,10-TETRAHYDRO[1,2,4]TRIAZOLO[5,1- a ][2,7]NAPHTHYRIDINES