Concise syntheses of enantiomerically pure protected 4-hydroxypyroglutamic acid and 4-hydroxyproline from a nitroso-cyclopentadiene cycloadduct
摘要:
O-TBS-protected methyl trans-4-hydroxypyroglutamate and methyl trans-4-hydroxyproline ester were synthesized from nitroso-cyclopentadiene Diels-Alder cycloadducts. Enzymatic resolution of the key intermediate, 4-amino-cyclopent-2-enol, provides access to both L- and D-amino acids. (C) 2008 Elsevier Ltd. All rights reserved.
Concise syntheses of enantiomerically pure protected 4-hydroxypyroglutamic acid and 4-hydroxyproline from a nitroso-cyclopentadiene cycloadduct
摘要:
O-TBS-protected methyl trans-4-hydroxypyroglutamate and methyl trans-4-hydroxyproline ester were synthesized from nitroso-cyclopentadiene Diels-Alder cycloadducts. Enzymatic resolution of the key intermediate, 4-amino-cyclopent-2-enol, provides access to both L- and D-amino acids. (C) 2008 Elsevier Ltd. All rights reserved.
Organic compounds having nitrogen atoms protected with t-butoxycarbonyl are effectively deprotected by heating in a fluorinated alcohol solution.
具有叔丁氧羰基保护的含氮有机化合物可以通过在氟代醇溶液中加热来有效去保护。
Concise syntheses of enantiomerically pure protected 4-hydroxypyroglutamic acid and 4-hydroxyproline from a nitroso-cyclopentadiene cycloadduct
作者:Weiqiang Huang、Marvin J. Miller
DOI:10.1016/j.tetasy.2008.12.013
日期:2008.12
O-TBS-protected methyl trans-4-hydroxypyroglutamate and methyl trans-4-hydroxyproline ester were synthesized from nitroso-cyclopentadiene Diels-Alder cycloadducts. Enzymatic resolution of the key intermediate, 4-amino-cyclopent-2-enol, provides access to both L- and D-amino acids. (C) 2008 Elsevier Ltd. All rights reserved.