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NOVEL BIOLOGICAL PROCESS FOR OBTAINING AMINODEZACETOKXYSEPHALOSPORANIC ACID (7-ADC ACID)
NOVEL BIOLOGICAL PROCESS FOR OBTAINING AMINODEZACETOKXYSEPHALOSPORANIC ACID (7-ADC ACID)
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机译:获取氨基乙二酮戊二酸(7-ADC酸)的新生物方法
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摘要
An important intermediate for preparing cephalosporin antibiotics, 7- aminodesacetoxy cephalosporanic acid (7-ADCA), is prepared by a novel bioprocess in which a transformed Penicillium chrysogenum strain is cultured in the presence of an adipate feedstock to produce adipoyl-6-APA (6-amino penicillanic acid); and the in situ expression of an expandase gene, e.g., from Streptomyces clavuligerus, with which the P. chrysogenum has been transformed, converts the adipoly- 6-APA by ring expansion to adipoyl-7-ADCA. The final product, 7-ADCA, is then prepared by cleavage of the adipoyl side chain using an adipoyl acylase. The entire synthesis, accordingly, is carried out using bioprocesses, and is efficient and economical.
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