Chirospecific Synthesis of (S)-(+)- and (R)-(-)-5-Amino-4-hydroxypentanoic Acid from L- and D-Glutamic Acid via (S)-(+)- and (R)-(-)-5-Hydroxy-2-oxopiperidine
Chirospecific Synthesis of (S)-(+)- and (R)-(-)-5-Amino-4-hydroxypentanoic Acid from L- and D-Glutamic Acid via (S)-(+)- and (R)-(-)-5-Hydroxy-2-oxopiperidine
Enantioenriched N-(2-chloroalkyl)-3-acetoxypiperidines as potential cholinotoxic agents. Synthesis and preliminary evidence for spirocyclic aziridinium formation
作者:Nam Huh、Charles M. Thompson
DOI:10.1016/0040-4020(95)00285-g
日期:1995.5
The syntheses of six enantioenriched analogs representing cyclic forms of acetylcholine are reported. (S)- and (R)-N-(2-chloroethyl)-3-acetoxypiperidine and (R,R)-, (R,S)-, (S,R)-, and (S,S)-N-(2-chloropropyl)-3-acetoxypiperidine have been synthesized from (R)- or (S)-3-hydroxypiperidine in five steps. (R)- and (S)-3-hydroxypiperidine were accessed via parallel stereospecific routes from d- and 1-glutamic
报道了代表乙酰胆碱的环状形式的六个对映体富集的类似物的合成。(S)-和(R)-N-(2-氯乙基)-3-乙酰氧基哌啶和(R,R)-,(R,S)-,(S,R)-和(S,S)-N从(R)-或(S)-3-羟基哌啶经五步合成了-(2-氯丙基)-3-乙酰氧基哌啶。(R)-和(S)-3-羟基哌啶可通过平行的立体定向途径从d-和1-谷氨酸进入,并通过非对映异构的tartranilic酸盐的分级重结晶而获得。((S)-N-(2-氯乙基)-3-乙酰氧基哌啶与高氯酸银反应形成乙酰胆碱的螺环叠氮基类似物,这是由叠氮基亚甲基的特征性1 H NMR位移所证明的。
[EN] ARYLPYRAZOLE ETHERS AS INHIBITORS OF LEUKOTRIENE A4 HYDROLASE<br/>[FR] ÉTHERS D'ARYLPYRAZOLE EN TANT QU'INHIBITEURS DE LEUCOTRIÈNE A4 HYDROLASE
申请人:BOEHRINGER INGELHEIM INT
公开号:WO2013012844A1
公开(公告)日:2013-01-24
The present invention relates to compounds of formula I or a pharmaceutically acceptable salt thereof, wherein A1, A2, A3, L1, L2 and D are as defined herein. The compounds of formula (I) are useful as inhibitors of leukotriene A4 hydrolase (LTA4H) and treating LTA4H related disorder. The present invention also relates to pharmaceutical compositions comprising the compounds of formula (I), methods of using these compounds in the treatment of various diseases and disorders, and processes for preparing these compounds.