357400-76-1Relevant articles and documents
Selective reduction of the 7-oxo group in pyrido[2,3d]pyrimidine-4,7- diones: A new synthetic approach to 5,10-dideazatetrahydrofolic acid (DDATHF)
Borrell, José I.,Teixidó, Jordi,Matallana, Josep Lluís,Martínez-Teipel, Blanca,Couceiro, Esther
, p. 1207 - 1214 (2000)
A selective reduction of the carbonyl group at C7 with borane in THF is accomplished for 2,4-diamino-7-oxo and 2-amino-4,7-dioxo substituted pyridopyrimidines (7a-c) and (13a-c) respectively, the ester group remaining unaltered in both cases. The synthesi