The present invention relates to new processes for the preparation of 2-cyclopentyl-6-methoxy-isonicotinic acid, which is a useful intermediate for the synthesis of pyridine-4-yl derivatives as immunomodulating agent. Moreover, the present invention also relates to new intermediates used in those processes.
本发明涉及制备2-环戊基-6-甲氧基
异烟酸的新工艺,该化合物是合成
吡啶-4-基衍
生物免疫调节剂的有用中间体。此外,本发明还涉及在这些工艺中使用的新中间体。