| 摘要 |
PCT No. PCT/JP96/02797 Sec. 371 Date Mar. 26, 1998 Sec. 102(e) Date Mar. 26, 1998 PCT Filed Sep. 27, 1996 PCT Pub. No. WO97/12890 PCT Pub. Date Apr. 10, 1997A compound of the formula: wherein R1 is amino, R2 is hydrogen, R3 is carboxy, R4 is heterocyclic(lower)alkylthio wherein said heterocyclic group is pyrazolyl and said lower alkyl group is methyl, and R5 is halogen; and pharmaceutically acceptable salts thereof. |
