申请人:Silva Guisasola Luis Octavio
公开号:US20120004426A1
公开(公告)日:2012-01-05
Olopatadine can be obtained by means of a process comprising hydrolysis of a compound of general formula (II), wherein Y is OR
1
, wherein R
1
is C
1
-C
7
alkyl, C
3
-C
7
cycloalkyl, aryl, arylalkyl, or heterocycle; or NR
2
R
3
, wherein R
2
and R
3
, independently from each other, are C
1
-C
7
alkyl, aryl, arylalkyl, or R
2
and R
3
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可以通过以下过程获得:水解通式(II)的化合物,其中Y为OR1,其中R1为C1-C7烷基,C3-C7环烷基,芳基,芳基烷基或杂环;或者NR2R3,其中R2和R3分别独立地为C1-C7烷基,芳基,芳基烷基,或者R2和R3与它们所结合的氮原子形成3至7个成员的杂环,所述过程包括在有机溶剂的反应介质中,在碱的存在下,通过反应相应的6,11-二氢-11-氧代二苯[b,e]氧杂环-2-乙酸酯或酰胺与适当的Wittig试剂反应而得到。