Enzymatic Dynamic Kinetic Resolution of Oxazinones: A New Approach to Enantiopure β2‐Amino Acids
Enzymatic Dynamic Kinetic Resolution of Oxazinones: A New Approach to Enantiopure β2‐Amino Acids
复制标题
恶嗪酮类的酶促动态动力学拆分:对映体纯 β2-氨基酸的新方法
DOI:
10.1002/cctc.201000343
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发表时间:
2011
期刊:
影响因子:
4.5
通讯作者:
R. Mohan
中科院分区:
文献类型:
--
作者:
A. Berkessel;Ilona Jurkiewicz;R. Mohan
In the presence of Candida antarctica lipase B, the alcoholytic ring opening of 5‐substituted oxazinones proceeds as kinetic resolution (KR) and affords N‐acyl β2‐amino acid esters in up to 96 % ee, the remaining oxazinones were obtained in up to 99 % ee. In the presence of triethylamine as racemization catalyst, the enzyme‐catalyzed alcoholytic oxazinone opening proceeds as dynamic kinetic resolution (DKR), affording quantitative yields of N‐protected β2‐amino acid esters in high enantiomeric purity (up to 96 % ee). N,C‐double deprotection to afford the β2‐amino acid can be effected without loss of enantiopurity.
DOI:
10.1002/anie.200801111
发表时间:
2008
期刊:
Angewandte Chemie (International ed. in English)
影响因子:
--
作者:
Kapitán J
通讯作者:
Kapitán J