• Title/Summary/Keyword: indene oxide

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Ozonides from the Ozonolyses of Indene

  • 이강렬;이치원;허태성
    • Bulletin of the Korean Chemical Society
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    • v.20 no.12
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    • pp.1437-1440
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    • 1999
  • Ozonolysis reactions of indene 5 in the presence of carbonyl compounds 6 provided the corresponding indenemonoozonide 9 and cross-ozonides 10a-c and 11a-c. Further reactions of ozonides 10 and 11 with the independently prepared carbonyl oxide 13 gave diozonides of structure 14a-c and 15a-c.

Purification and Characterization of a Recombinant Caulobacter crescentus Epoxide Hydrolase

  • Hwang, Seung-Ha;Hyun, Hye-Jin;Lee, Byoung-Ju;Park, Young-Seub;Lee, Eun-Yeol;Choi, Cha-Yong
    • Biotechnology and Bioprocess Engineering:BBE
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    • v.11 no.4
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    • pp.282-287
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    • 2006
  • A Caulobacter crescentus epoxide hydrolase(CCEH) from a recombinant Escherichia coli was purified to homogeneity using a three-step procedure. The CCEH protein was purified 7.3-fold with a 22.9% yield in overalll activity. The optimal reaction temperature and pH were determined to be $37^{\circ}C$ and pH 8.0, respectively. The addition of 10%(v/v) dimethylsulfoxide as a cosolvent improved the enantioselectivity of CCEH for a batch kinetic resolution of racemic indene oxide.

Screening from the Genome Databases: Novel Epoxide Hydrolase from Caulobacter crescentus

  • HWANG SEUNGHA;HYUN HYEJIN;LEE BYOUNGJU;PARK YOUNGSEUB;CHOI CHAYONG;HAN JIN;JOO HYUN
    • Journal of Microbiology and Biotechnology
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    • v.16 no.1
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    • pp.32-36
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    • 2006
  • The genome sequences from several microbes have led to the discovery of numerous open reading frames of unknown functionality. The putative bacterial epoxide hydrolase (EH) genes selected from the genome databases were examined for their activities toward various epoxides. Among the nine open reading frames (ORFs) from four microbial species, the ORF from Caulobacter crescentus showed an epoxide hydrolase activity. The kinetic resolution, using C. crescentus EH (CCEH) of the aryl epoxides such as styrene oxide, could be performed more efficiently than short aliphatic epoxides. The resolution of racemic indene oxide, which could previously be resolved only by fungal epoxide hydrolases, was effectively accomplished by CCEH.