[EN] PROCESS FOR OBTAINING OLOPATADINE AND INTERMEDIATES<br/>[FR] PROCÉDÉ D'OBTENTION D'OLOPATADINE ET DE SES INTERMÉDIAIRES
申请人:RAGACTIVES S L U
公开号:WO2010007056A1
公开(公告)日:2010-01-21
Olopatadine can be obtained by means of a process comprising hydrolysis of a compound of general formula (II), wherein Y is OR1, wherein R1 is C1-C7 alkyl, C3-C7 cycloalkyl, aryl, arylalkyl, or heterocycle; or NR2R3, wherein R2 and R3, independently from each other, are C1-C7 alkyl, aryl, arylalkyl, or R2 and R3 together with the nitrogen atom to which they are bound form a heterocycle of 3 to 7 members, obtained by means of a process comprising reacting the corresponding ester or amide of 6,11-dihydro-11- oxodibenz[b,e]oxepin-2-acetic acid with a suitable Wittig reagent, in the presence of a base in a reaction medium comprising an organic solvent.
Olopatadine可以通过一种过程获得,包括对通式(II)的化合物进行水解,其中Y为OR1,其中R1为C1-C7烷基,C3-C7环烷基,芳香族,芳香族烷基或杂环;或NR2R3,其中R2和R3独立地为C1-C7烷基,芳香族,芳香族烷基,或R2和R3与它们所结合的氮原子形成3至7个成员的杂环,通过在有机溶剂反应介质中,在碱存在下,与适当的Wittig试剂反应,获得6,11-二氢-11-氧代二苯[b,e]氧杂环-2-乙酸相应的酯或酰胺。