| 摘要 |
PCT No. PCT/JP91/01100 Sec. 371 Date Feb. 19, 1993 Sec. 102(e) Date Feb. 19, 1993 PCT Filed Aug. 16, 1991 PCT Pub. No. WO92/03444 PCT Pub. Date Mar. 5, 1992Antibiotic penem compounds are represented by the following formula: <IMAGE> (I) wherein R represents a group of the following formula: <IMAGE> in which R1 is a linear or branched, C1-C6 alkyl group, R2 is a particular substituted or unsubstituted alkyl, aryl or aralkyl group, n is an integer of 1 or 2, and R3 represents a specific substituted or unsubstituted alkyl, aryl or aralkyl group. Antibiotic compositions for oral administration are also described. |
