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.

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. Four further antibiotics related to olivanic acid produced by Streptomyces olivaceus: Fermentation, isolation, characterisation and biosynthetic studies. Olivanic acids, a family of .BETA.-lactam antibiotics with .BETA.-lactamase inhibitory properties produced by Streptomyces species. I. Detection, properties and fermentation studies. A new olivanic acid derivative produced by Streptomyces olivaceus: isolation and structural studies. Structures of olivanic acid derivatives MM22380, MM22381, MM22382 and MM22383; Four new antibiotics isolated from Streptomyces olivaceus. Naturally-occurring .BETA.-lactamase inhibitors with antibacterial activity. Kanchanamycins, New Polyol Macrolide Antibiotics Produced by Streptomyces olivaceus Tue 4018. I. Taxonomy, Fermentation, Isolation and Biological Activitiest. Kanchanamycins, New Polyol Macrolide Antibiotics Produced by Streptomyces olivaceus Tue 4018. I. Taxonomy, Fermentation, Isolation and Biological Activitiest. Structure elucidation and synthesis of (2s)-4-oxo-1-azabicyclo[3.3.0]octa-5,7-diehe-2-carboxylic acid, a new metabolite isolated ercm stheptomyces oliyacbjs MM 47761 and MM 49721, glycopeptide antibiotics produced by a new strain of Amycolatopsis orientalis. Isolation, purification and structure determination.