Enzymatic deracemization of halogenated dihydroindenols and dihydroindenediols substituted in benzene ring
The optically active halodihydroindenols and dihydroindenediols are components of many biologically active natural compounds, being important pharmacophore groups. In the present work, to obtain the above compounds with a high degree of optical purity, the resolution of racemates into enantiomers...
Збережено в:
Видавець: | Видавничий дім "Академперіодика" НАН України |
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Дата: | 2020 |
Автори: | , , |
Формат: | Стаття |
Мова: | English |
Опубліковано: |
Видавничий дім "Академперіодика" НАН України
2020
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Назва видання: | Доповіді НАН України |
Теми: | |
Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/170397 |
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Цитувати: | Enzymatic deracemization of halogenated dihydroindenols and dihydroindenediols substituted in benzene ring / D.V. Prysiazhnuk, O.O. Kolodiazhna, O.I. Kolodiazhnyi // Доповіді Національної академії наук України. — 2020. — № 3. — С. 71-81. — Бібліогр.: 14 назв. — англ. |
Репозиторії
Digital Library of Periodicals of National Academy of Sciences of UkraineРезюме: | The optically active halodihydroindenols and dihydroindenediols are components of many biologically active natural
compounds, being important pharmacophore groups. In the present work, to obtain the above compounds with a high
degree of optical purity, the resolution of racemates into enantiomers using enzymes is proposed. Dihydroindenones,
which were reduced with sodium borohydride to dihydroindenols, were used as starting compounds. Burkholderia
cepacia lipase (BCL) was used to separate racemic indenols. Racemic indenols were kinetically trans-esterificated
with vinyl acetate in organic media in the presence of a BCL biocatalyst. As a result, acylated indenols of (R)-ab solute
configuration and unreacted indenol of (S)-configuration, which were separated into individual compounds
by column chromatography, were obtained. The enzymatic resolution of halodihydrinindene acetates by hydrolysis
in the presence of Candida antarctica B lipase immobilized on diatomite was also investigated. Enantiomerically
enriched halodihydroindenols and halodihydrinindene acetates were obtained when racemic halodihydrinindene
acetates were treated with Novozym 435® in MTBE for 20—30 hours at 30—40 °C. The enantiomeric purity of the
compounds was determined by the derivatization with Mosher acid. The absolute configuration of the compounds
was established by the Kazlauskas method. |
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