Chemo-Enzymatic Synthesis of Optically Active Amino Acids and Peptides
作者:Shui-Tein Chen、Kung-Tsung Wang
DOI:10.1002/jccs.199900046
日期:1999.6
AbstractThe industrial alkaline protease, alcalase, is stable and active in a high concentration of organic solvents and useful as a biocatalyst for (i) diastereoselective hydrolysis of peptide esters and preparation of racemization‐free peptides; (ii) selective incorporation of esters of D‐amino acid into peptides in t‐butanol via a selective hydrolysis of esters of D,L‐amino acid, followed by using the unhydrolyzed D‐esters as a nucleophile in a kinetically controlled peptide bond formation; (iii) resolution of esters of amino acid in 95% t‐butanol/5% water, followed by saponification of the unreacted esters to offer both enantiomers with high yield and optical purity; (iv) completely resolve amino‐acid esters with high yield and optical purity via in situ racemization of the unreacted antipode catalyzed by pyridoxal 5‐phosphate; (v) cryobioorganic synthesis of peptides with increased yields 15%–40% of peptide bond formation by reaction at 5 °C instead of 25–30 °C of a kinetically controlled enzymatic reaction in alcohols.
MUTULIS, F. K.;POLIS, YA. YU.;RAGUEL, B. P.;SEKATSIS, I. P.;MISHNEV, A. F+, ZH. ORGAN. XIMII, 25,(1989) N, S. 558-565
作者:MUTULIS, F. K.、POLIS, YA. YU.、RAGUEL, B. P.、SEKATSIS, I. P.、MISHNEV, A. F+