申请人:Southern Research Institute
公开号:US04431805A1
公开(公告)日:1984-02-14
There is disclosed a novel intermediate useful in the preparation of pyrido[2,3-d]pyrimidines, which includes N-[4- [(2-amino-4(3H)-oxopyrido[2,3-d]pyrimidin-6-yl)methylamino]benzoyl]-L-glut amic acid (5-deazafolic acid), N-[4-[[(2-amino-4(3H)-oxopyrido[2,3-d]-pyrimidin-6-yl)methyl]methylamino]b enzoyl]-L-glutamic acid (5-deaza-N.sup.10 -methylfolic acid), N-[4-[(2,4-diaminopyrido[2,3-d]pyrimidin-6-yl)methylamino]benzoyl]-L-gluta mic acid (5-deazaaminopterin), and N-[4-[[(2,4-diaminopyrido[2,3-d]pyrimidin-6-yl)methyl]methylamino]benzoyl] -L-glutamic acid (5-deazamethotrexate). This intermediate is the compound 2,4-diaminopyrido[2,3-d]pyrimidine-6-carboxaldehyde.
本发明涉及一种新颖的中间体,用于制备吡咯并[2,3-d]嘧啶,包括N-[4-[(2-氨基-4(3H)-氧代吡咯并[2,3-d]嘧啶-6-基)甲基氨基]苯甲酰]-L-谷氨酸(5-脱氧叶酸)、N-[4-[[(2-氨基-4(3H)-氧代吡咯并[2,3-d]嘧啶-6-基)甲基]甲基氨基]苯甲酰]-L-谷氨酸(5-脱氧N.sup.10-甲基叶酸)、N-[4-[(2,4-二氨基吡咯并[2,3-d]嘧啶-6-基)甲基氨基]苯甲酰]-L-谷氨酸(5-脱氧氨基喋呤)和N-[4-[[(2,4-二氨基吡咯并[2,3-d]嘧啶-6-基)甲基]甲基氨基]苯甲酰]-L-谷氨酸(5-脱氧甲氧苯甲酰谷氨酸)。该中间体是化合物2,4-二氨基吡咯并[2,3-d]嘧啶-6-甲醛。