Lipase resolution of new (±)-3-aryloxy-1-halogenopropan-2-ols: Versatile building blocks for β-adrenergic receptor antagonists
摘要:
Using two commercial immobilized lipases Lipozyme(R) TL and Novozym(R) 435 effective kinetic resolution of several novel 3-aryloxy-1-halogenopropan-2-ols was achieved by acyl transfer reaction in organic solvents, yielding both enantiomers with 89-99% ee. In preparative resolutions carried out in tert-butyl methyl ether at 25 degrees C with vinyl acetate as acyl donor enantioselectivity ratio E was from 64 to 99. The resolved enantiomers were successfully used as chiral building blocks in the synthesis of new 1-alkylamino-3-aryloxypropan-2-ols, by nucleophilic halogen substitution with isopropylamine and tert-butylamine. The obtained products will be evaluated in vitro as potential new beta-adrenergic receptors antagonists. (C) 2009 Elsevier B.V. All rights reserved.
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作者:Marle
DOI:——
日期:——
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作者:Lefebvre、Levas
DOI:——
日期:——
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作者:Levas
DOI:——
日期:——
The condensation of epichlorohydrin with monohydric phenols and with catechol
作者:O. Stephenson
DOI:10.1039/jr9540001571
日期:——
Lipase resolution of new (±)-3-aryloxy-1-halogenopropan-2-ols: Versatile building blocks for β-adrenergic receptor antagonists
作者:Maciej Maciejewski、Krzysztof Półtorak、Janina E. Kamińska
DOI:10.1016/j.molcatb.2009.11.004
日期:2010.3
Using two commercial immobilized lipases Lipozyme(R) TL and Novozym(R) 435 effective kinetic resolution of several novel 3-aryloxy-1-halogenopropan-2-ols was achieved by acyl transfer reaction in organic solvents, yielding both enantiomers with 89-99% ee. In preparative resolutions carried out in tert-butyl methyl ether at 25 degrees C with vinyl acetate as acyl donor enantioselectivity ratio E was from 64 to 99. The resolved enantiomers were successfully used as chiral building blocks in the synthesis of new 1-alkylamino-3-aryloxypropan-2-ols, by nucleophilic halogen substitution with isopropylamine and tert-butylamine. The obtained products will be evaluated in vitro as potential new beta-adrenergic receptors antagonists. (C) 2009 Elsevier B.V. All rights reserved.