Four further antibiotics related to olivanic acid produced by Streptomyces olivaceus: Fermentation, isolation, characterisation and biosynthetic studies.

Thienamycin, a new .BETA.-lactam antibiotic. I. Discovery, taxonomy, isolation and physical properties.

1979 • 502 citations

Conversion of penicillin N to cephalosporin(s) by cell-free extracts of Cephalosporium acremonium

1976 • 122 citations

The inhibition of staphylococcal β-lactamase by clavulanic acid

1979 • 80 citations

Olivanic acids, a family of .BETA.-lactam antibiotics with .BETA.-lactamase inhibitory properties produced by Streptomyces species. II. Isolation and characterisation of the olivanic acids MM 4550, MM 13902 and MM 17880 from Streptomyces olivaceus.

1979 • 69 citations

Structures of olivanic acid derivatives MM22380, MM22381, MM22382 and MM22383; Four new antibiotics isolated from Streptomyces olivaceus.

1979 • 49 citations

PS-5, a new .BETA.-lactam antibiotic. I. Taxonomy of the producing organism, isolation and physico-chemical properties.

1979 • 42 citations