${\beta}-Lactamase$ Inhibitory Activity and Comparative Activity of 6-Benzothiazole Penicillin Derivatives in Combination with ${\beta}-Lactam$ Antibiotics

6-벤조치아졸 페니실린 유도체의 베타락타마제 효소억제력과 베타락탐항생제 병용시 활성비교

  • Yoon, Sang-Bae (Division of Medicinal Chemistry, College of Pharmacy, Chung-ang University) ;
  • Im, Chae-Uk (Division of Medicinal Chemistry, College of Pharmacy, Chung-ang University)
  • 윤상배 (중앙대학교 약학대학 의약품화학 교실) ;
  • 임채욱 (중앙대학교 약학대학 의약품화학 교실)
  • Published : 2008.08.31

Abstract

In vitro ${\beta}-lactamase$ inhibitory activity of 6-benzothiazole penicillins (1, 2, 3 and 4) was compared with clavulanic acid, sulbactam and tazobactam. The inhibitory activity of exomethylene compounds (3 and 4) was stronger than those of non-exomethylene compounds (1 and 2). The sulfide 3 showed stronger inhibitory activity than sulbactam, clavulanic acid andsimilar to tazobactam against ${\beta}-lactamase$ Type I enzymes. The inhibitory activity of 4 was stronger than those of sulbactam, clavulanic acid and tazobactam against Type III and IV enzymes. The in vitro antimicrobial activity of ampicillin or cefoperazone combined with 3 or 4 was stronger than those of ampicillin or cefoperazone alone against many ${\beta}-lactamase$ producing strains to show that compounds 3 and 4 have some synergistic effect. The synergistic activity of 3 and 4 was comparable to sulbactam in some ${\beta}-lactamase$ producing strains, but it was inferior to tazobactam.

Keywords

References

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