Microbial metabolism of the \-adrenoreceptor antagonist bisoprolol |
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Authors: | Harry Schwartz Ralf-Erwin Licht Hans-Eckart Radunz |
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Institution: | (1) Pharmaceutical Research, E. Merck, Frankfurter Stra e 250, D-64271 Darmstadt, Germany |
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Abstract: | Eighteen filamentous fungi and six actinomycetes species were screened for their ability to metabolize bisoprolol, a \-blocking drug. All strains of Cunninghamella tested accumulated metabolite M4 = EMD 46193 (4-(2-hydroxy-3-isopropylaminopropoxy)benzyloxy]ethanol). Among the strains investigated only Gliocladium deliquescens excreted the corresponding carbonic acid M1 = EMD 44025 into the culture medium. Biotransformation of bisoprolol by fungi occurred only during growth in complex medium or with resting cells after cultivation in complex medium. The screened Actinomycetes showed no biotransformation of the drug.
Correspondence to: H. Schwartz |
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