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Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Enzymatic Desymmetrisation of Prochiral Meso-1,2-Disubstituted-1,2-Diaminoethane for the Synthesis of Key Enantioenriched (-)-Nutlin-3 Precursor

Version 1 : Received: 14 June 2024 / Approved: 14 June 2024 / Online: 14 June 2024 (15:24:21 CEST)

How to cite: Cristofori, V.; Illuminati, D.; Bisquoli, C.; Catani, M.; Compagnin, G.; Turrin, G.; Trapella, C.; Fantinati, A. Enzymatic Desymmetrisation of Prochiral Meso-1,2-Disubstituted-1,2-Diaminoethane for the Synthesis of Key Enantioenriched (-)-Nutlin-3 Precursor. Preprints 2024, 2024061026. https://doi.org/10.20944/preprints202406.1026.v1 Cristofori, V.; Illuminati, D.; Bisquoli, C.; Catani, M.; Compagnin, G.; Turrin, G.; Trapella, C.; Fantinati, A. Enzymatic Desymmetrisation of Prochiral Meso-1,2-Disubstituted-1,2-Diaminoethane for the Synthesis of Key Enantioenriched (-)-Nutlin-3 Precursor. Preprints 2024, 2024061026. https://doi.org/10.20944/preprints202406.1026.v1

Abstract

Herein we present the biocatalysed preparation of mono-N-carbamate-protected precursor of antitumoral Nutlin-3a, through enantioselective alkoxycarbonylation of meso-1,2-disubstituted-1,2-diaminoethane, using enzyme lipases and dialkyl carbonates as acylating agents. A series of supported or free lipase enzymes were screened in combination with commercially available diallyl-, diethyl and dimethyl- carbonate. The reactions were conducted at different temperatures, reaction times and with variable co-solvent systems to evaluate the effect on the enzyme catalytic activity. The best results in terms of conversion, enantiomeric excess and yield were obtained when lipase from Candida antarctica B (CAL-B) was used with diallyl carbonate (DAC) conducting the reaction solventless at 75 °C.

Keywords

Biocatalysis; Nutlin-3a; desymmetrization; vicinal meso-diamines

Subject

Chemistry and Materials Science, Organic Chemistry

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