Enzymatic synthesis of enantiomerically enriched d- and l-3-silylated alanines by deracemization of dl-5-silylmethylated hydantoins
摘要:
The hydantoinase process was shown to be extendable to the production of highly lipophilic, silicon-containing amino acids. Two hydantoinases of different origin and stereoselectivities and one L-N-carbamoylase were used for the highly stereoselective bioconversion of (dimethyl)phenylsilyl- and 1-methyl-1-silacyclopentyl substituted alanine derivatives. The enantiomeric purities and absolute configuration of the products were determined with reference compounds that were synthesized with the aid of the Evans oxazolidinone auxiliary. (C) 2001 Elsevier Science Ltd. All rights reserved.
Enzymatic synthesis of enantiomerically enriched d- and l-3-silylated alanines by deracemization of dl-5-silylmethylated hydantoins
摘要:
The hydantoinase process was shown to be extendable to the production of highly lipophilic, silicon-containing amino acids. Two hydantoinases of different origin and stereoselectivities and one L-N-carbamoylase were used for the highly stereoselective bioconversion of (dimethyl)phenylsilyl- and 1-methyl-1-silacyclopentyl substituted alanine derivatives. The enantiomeric purities and absolute configuration of the products were determined with reference compounds that were synthesized with the aid of the Evans oxazolidinone auxiliary. (C) 2001 Elsevier Science Ltd. All rights reserved.
Hydrosilylation of methylenecyclopropane and methylenecyclobutane on an immobilized platinum catalyst
作者:E. Sh. Finkel'shtein、V. E. Fedorov、M. P. Filatova
DOI:10.1007/bf00958591
日期:1991.4
The hydrosilylation of methylenecyclopropane on an immobilized platinum catalyst, in contrast to methylenecyclobutane, leads to the formation of linear 3-butenylsilane.
Lopatnikova, E., Doklady Chemistry, 1983, vol. 268, p. 6 - 9
作者:Lopatnikova, E.
DOI:——
日期:——
Enzymatic synthesis of enantiomerically enriched d- and l-3-silylated alanines by deracemization of dl-5-silylmethylated hydantoins
作者:Richard J. Smith、Markus Pietzsch、Thomas Waniek、Christoph Syldatk、Stefan Bienz
DOI:10.1016/s0957-4166(01)00028-3
日期:2001.2
The hydantoinase process was shown to be extendable to the production of highly lipophilic, silicon-containing amino acids. Two hydantoinases of different origin and stereoselectivities and one L-N-carbamoylase were used for the highly stereoselective bioconversion of (dimethyl)phenylsilyl- and 1-methyl-1-silacyclopentyl substituted alanine derivatives. The enantiomeric purities and absolute configuration of the products were determined with reference compounds that were synthesized with the aid of the Evans oxazolidinone auxiliary. (C) 2001 Elsevier Science Ltd. All rights reserved.