Synthesis of [
13C₃]-B6 Vitamers Labelled at Three Consecutive Positions Starting from [
13C₃]-Propionic Acid.
MOLECULES (BASEL, SWITZERLAND) 2018;
23:molecules23092117. [PMID:
30142892 PMCID:
PMC6225105 DOI:
10.3390/molecules23092117]
[Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 08/16/2018] [Accepted: 08/18/2018] [Indexed: 12/31/2022]
Abstract
[13C3]-labelled vitamers (PN, PL and PM) of the B6 group were prepared starting from [13C3]-propionic acid. [13C3]-PN was synthesized in ten linear steps with an overall yield of 17%. Hereby, higher alkyl homologues of involved esters showed a positive impact on the reaction outcome of the intermediates in the chosen synthetic route. Oxidation of [13C3]-PN to [13C3]-PL was undertaken using potassium permanganate and methylamine followed by acid hydrolysis of the imine derivative. [13C3]-PM could be prepared from the oxime derivative of [13C3]-PN by hydrogenation with palladium.
Collapse