THE PRESENT INVENTION PROVIDES A 2, 3-DIHYDRO-6-NITROIMIDAZO [2,1-B]OXAZOLE COMPOUND REPRESENTED BY THE FOLLOWING GENERAL FORMULA : IN THE ABOVE FORMULA (1), R1 REPRESENTS A HYDROGEN ATOM OR C1-C6 ALKYL GROUP, N REPRESENTS AN INTEGER OF 0 TO 6, R1 AND - (CH2) NR2 MAY FORM A SPIRO RING REPRESENTED BY THE FORMULA (30) BELOW, TOGETHER WITH THE ADJACENT CARBON ATOM (IN THE FORMULA BELOW, RRR REPRESENTS A PIPERIDYL GROUP WHICH MAY HAVE SUBSTITUENTS ON THE PIPERIDINE RING), AND R2 REPRESENTS A BENZOTHIAZOLYLOXY GROUP, QUINOLYLOXY GROUP, PYRIDYLOXY GROUP OR THE LIKE. THE PRESENT COMPOUND HAS AN EXCELLENT BACTERICIDAL ACTION AGAINST MYCOBACTERIUM TUBERCULOSIS, MULTI-DRUG-RESISTANT MYCOBACTERIUM TUBERCULOSIS, AND ATYPICAL ACID-FAST BACTERIA.