Efficient synthesis of deuterium labeled hydroxyzine and aripiprazole
作者:Mohit Vohra、Mahendra Sandbhor、Andrew Wozniak
DOI:10.1002/jlcr.3298
日期:2015.6.15
Hydroxyzine and aripiprazole are active pharmaceutical ingredients that have been largely acknowledged for their antipsychotic properties. Deuterium labeled isotopes of hydroxyzine and aripiprazole are internal standards that can aid in the further research of non-isotopic forms via quantification analysis using HPLC-MS/MS. The synthesis of hydroxyzine-d8 was accomplished by coupling piperazine-d8 with 4-chlorobenzhydryl chloride followed by the reaction of the first intermediate with 2-(2-chloroethoxy) ethanol to afford 11.7% of hydroxyzine-d8 with 99.5% purity. The synthesis of aripiprazole-d8 was also achieved in two steps. 1,4-Dibromobutane-d8 reacted with 7-hydroxy-3,4-dihydro-2(1H)-quinolinone. The first intermediate was then coupled with 1-(2, 3-dichlorophenyl)piperazine hydrochloride to produce 33.4% of aripiprazole-d8 with 99.93% purity.
Morren et al., Bulletin des Societes Chimiques Belges, 1951, vol. 60, p. 282,288
作者:Morren et al.
DOI:——
日期:——
H1—histamine receptor antagonists
申请人:Theravance, Inc.
公开号:US06420560B1
公开(公告)日:2002-07-16
This invention relates to novel multibinding compounds (agents) that are H1 histamine receptor antagonists and pharmaceutical compositions comprising such compounds. Accordingly, the multibinding compounds and pharmaceutical compositions of this invention are useful in the treatment and prevention of allergic diseases such as rhinitis, urticaria, asthma, and anaphylaxis, and the like.