The invention relates to pyridine derivatives of Formula (I)
wherein A, R
1
, R
2
, R
3
, and R
4
are as described in the description, their preparation and their use as pharmaceutically active compounds. Said compounds particularly act as immunomodulating agents.
该发明涉及公式(I)中的
吡啶衍生物,其中A、R1、R2、R3和R4如描述中所述,它们的制备以及它们作为药用活性化合物的用途。这些化合物特别作为免疫调节剂。