期刊
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
卷 15, 期 18, 页码 4064-4067出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmcl.2005.06.011
关键词
biocatalysis; cytarabine; enzymatic synthesis; selectivity; vinyl ester
Selectivity of enzymatic and chemical methods for transesterifications of cytarabine with divinyl dicarboxylates was described. Catalysis by lipase acrylic resin from Candida antarctica (CAL-B) in acetone facilitated the single step synthesis of polymerizable 5 '-O-acyl cytarabine derivatives in high yields, while the use of alkaline protease from Bacillus subtilis (subtilisin) in pyridine afforded the mixture products of 5 '-O-acyl and 4-N-acyl cytarabine derivatives. Interestingly, polymerizable 4-N-acyl cytarabine vinyl derivatives can be selectively prepared by chemical transesterification in dioxane. The obtained series of cytarabine derivatives would be useful for a significant monomer for a polymeric anticancer drug. (c) 2005 Elsevier Ltd. All rights reserved.
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