Enantiodivergent Synthesis of Halofuginone by Candida antarctica Lipase B (CAL-B)-Catalyzed Kinetic Resolution in Cyclopentyl Methyl Ether (CPME)

Autor: Ernesto G. Occhiato, Elia Maffeis, Elisa De Marchi, Dina Scarpi, Davide Arnodo, Cristina Prandi
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: SynOpen, Vol 05, Iss 02, Pp 145-151 (2021)
ISSN: 2509-9396
DOI: 10.1055/a-1523-6428
Popis: The synthesis of both enantiomers of a key intermediate in the synthesis of halofuginone was accomplished by a Candida antarctica lipase B (CAL-B)-catalyzed kinetic resolution of the corresponding racemate. When the resolution was carried out in the versatile solvent cyclopentyl methyl ether (CPME) using p-chlorophenylbutyrate (PCPB) as the acylating reagent, the highest enantiomeric ratio (E) values were measured, and highly enantioenriched (95% ee) compounds could be obtained in a single iteration. As an example, one of the two enantiomers was used as a starting material to prepare (+)-halofuginone in a three-step procedure.
Databáze: OpenAIRE