1992
DOI: 10.1016/s0040-4039(00)60861-4
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Drastic solvent effect on lipase-catalyzed enantioselective hydrolysis of prochiral 1,4-dihydropyridines

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Cited by 101 publications
(32 citation statements)
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“…catalyzed the hydrolysis of ethoxycarbonylmethyl esters of 1,4-DHP through the splitting of both 'outer' and 'inner' ester groups to give the corresponding carboxylic acid or methyl ester [40].…”
Section: Proposed Reaction Mechanism For Amlodipinementioning
confidence: 99%
“…catalyzed the hydrolysis of ethoxycarbonylmethyl esters of 1,4-DHP through the splitting of both 'outer' and 'inner' ester groups to give the corresponding carboxylic acid or methyl ester [40].…”
Section: Proposed Reaction Mechanism For Amlodipinementioning
confidence: 99%
“…Além disso, a catálise enzimática em meio orgânico tem revelado alguns fenômenos inesperados e benéfi-cos. Por exemplo: a estabilidade de enzimas em meio não aquoso pode ser aumentada comparando-se com aquelas em água 81 ; todas as propriedades enzimáticas de interesse particular para químicos orgânicos, como por exemplo a enantiosseletividade, podem ser controladas pelo solvente [125][126][127] . Recentemente, algumas regras empíricas foram formuladas para a otimização da atividade biocatalítica em diferentes solventes orgânicos.…”
Section: Efeitos Do Solventeunclassified
“…Além disso, não tem tantos inconvenientes como outros métodos cujo biocatalisador está em contato direto com o solvente 125,127,130 e/ou utilizam uma alta concentração de enzima (200 mg a 13g) para realizar cada experimento 149,150 . Portanto, o sistema de organo-gel pode ser empregado com sucesso para a resolução de álcoois secundários racêmicos.…”
Section: Resolução De áLcoois Racêmicosunclassified
“…The clinical importance of and demand for chiral 1,4-dihydropyridine drugs have been increasing steadily over the past few years because of the growing awareness that the individual isomers of drugs having a chiral center should be evaluated in detail in the process of drug development. Chiral 1,4-dihydropyridines can be obtained by the following methods: (i) chemical resolution of racemate forms (14), (ii) enantioselective chemical synthesis (13), and (iii) enzymatic hydrolysis or transesterification of prochiral diesters (1,4,(7)(8)(9)11). The enzymatic method is very likely to be more advantageous than the other methods because it involves simple processes with both high selectivity and high yield.…”
mentioning
confidence: 99%
“…It has also been reported that enantioselective hydrolysis occurs with lipases when prochiral 1,4-dihydropyridines containing acyloxymethyl groups at the C-3 and C-5 positions are used as substrates (9,11). The resulting chiral half esters of the 1,4-dihydropyridines produced by the proteases or the lipases, regardless of which chirality they have, can be key intermediates for production of (4R)-1,4-dihydropyridine drugs such as Barnidipine (8,30,32) and Dexniguldipine (18).…”
mentioning
confidence: 99%