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Robinobiosylation of tyrosol by seed meal from Rhamnus cathartica

Peter Haluz, Mária Mastihubová, Elena Karnišová Potocká, Filip Pančík, and Vladimír Mastihuba

Institute of Chemistry, Slovak Academy of Sciences, Bratislava, Slovakia

 

E-mail: vladimir.mastihuba@savba.sk

Received: 21 June 2023  Accepted: 4 August 2023

Abstract:

Tyrosol robinobioside was prepared under catalysis of robinobiosidase-containing seed meal from common buckthorn Rhamnus cathartica. Robinin, a flavonoid isolated from the flowers of black locust (Robinia pseudoacacia) served as a robinobiosyl donor. The glycosylation proceeded predominantly on the primary hydroxyl of tyrosol, typically yielding mixtures of isomeric glycosides in ratios of 5:1 to 8:1 with overall yields of robinobiosides higher than 20%. This is the first robinobiosylation promoted under enzymatic catalysis.

Keywords: Diglycosidase; Robinobiosidase; Rhamnus cathartica; Tyrosol; Transglycosylation; Robinin

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-023-03027-4

 

Chemical Papers 77 (12) 7993–7998 (2023)

Wednesday, April 17, 2024

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