Synthesis and Pharmacological Effects of Diosgenin-Betulinic Acid Conjugates.

ABSTRACT: The target diosgenin-betulinic acid conjugates are reported to investigate their ability to enhance and modify the pharmacological effects of their components. The detailed synthetic procedure that includes copper(I)-catalyzed Huisgen 1,3-dipolar cycloaddition (click reaction), and palladium-catalyzed debenzylation by hydrogenolysis is described together with the results of cytotoxicity screening tests. Palladium-catalyzed debenzylation reaction of benzyl ester intermediates was the key step in this synthetic procedure due to the simultaneous presence of a 1,4-disubstituted 1,2,3-triazole ring in the molecule that was a competing coordination site for the palladium catalyst. High pressure (130 kPa) palladium-catalyzed procedure represented a successful synthetic step yielding the required

SUBMITTER: Ozdemir Z 

PROVIDER: S-EPMC7435711 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature