Synthesis of (6S)-5-formyltetrahydropteroyl-polyglutamates and interconversion to other reduced pteroylpolyglutamate derivatives. Academic Article uri icon


  • 5-Formyltetrahydropteroylpolyglutamates can be synthesized and purified directly from dihydropteroylpolyglutamates in a single-step procedure without purification of intermediates and with yields greater than 90%. The procedure involves a coupled enzymatic synthesis of 10-formyltetrahydropteroylpolyglutamates using the enzymes dihydrofolate reductase, serine hydroxymethyltransferase, and C1-tetrahydrofolate synthase with catalytic amounts of NADPH. The 10-formyltetrahydropteroylpolyglutamates are subsequently converted to 5-formyltetrahydropteroylpolyglutamates at 90 degrees C with near quantitative yields. 5-Formyltetrahydropteroylpolyglutamates are the only stable reduced derivatives of tetrahydropteroylpolyglutamates and can be purified and stored indefinitely without decomposition. Additionally, 5-formyltetrahydropteroylpolyglutamates can be readily converted to other derivatives of tetrahydropteroylpolyglutamates with yields greater than 95%. Also described is the synthesis of tetrahydropteroylglutamates labeled at C-11 with either 14C or 13C. Rapid purification procedures for serine hydroxymethyltransferase and C1-tetrahydrofolate synthase from frozen rabbit livers are presented.

published proceedings

  • Anal Biochem

altmetric score

  • 6

author list (cited authors)

  • Stover, P., & Schirch, V.

citation count

  • 39

complete list of authors

  • Stover, P||Schirch, V

publication date

  • April 1992