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KMID : 1094720120170020393
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Biotechnology and Bioprocess Engineering
2012 Volume.17 No. 2 p.393 ~ p.397
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Regioselective enzymatic procedure for preparing 3′-O-stearoyl-6-azauridine by using Burkholderia cepacia lipase
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Wang Zhao-Yu
Bi Yan-Hong
Zong Min-Hua
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Abstract
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Previous studies on the lipase-mediated acylation of 6-azauridine with vinyl stearate in organic solvents revealed that while preparing a potential prodrug, 3′-O-stearoyl-6-azauridine, a lipase from Burkholderia cepacia showed high regioselectivity toward the second hydroxyl group. The most suitable reaction solvent, molar ratio of vinyl stearate to 6-azauridine, and reaction temperature were anhydrous acetone, 15:1, and 45°C, respectively. Under these conditions, the initial reaction rate, 3′-regioselectivity, and maximum substrate conversion were as high as 10.4 mM/h, 86.0, and 99.0%, respectively.
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KEYWORD
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6-azauridine, Burkholderia cepacia lipase, enzyme catalysis, organic solvent, regioselective acylation
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