The determination of enantiomer composition of 1-((3-chlorophenyl)-(phenyl)methyl) amine and 1-((3-chlorophenyl)(phenyl)-methyl) urea (Galodif) by NMR spectroscopy, chiral HPLC, and polarimetry
作者:Vera Yu. Kuksenok、Victoria V. Shtrykova、Victor D. Filimonov、Alexandr G. Druganov、Alexandr A. Bondarev、Ksenia S. Stankevich
DOI:10.1002/chir.23005
日期:2018.10
For the first time, a method for enantiomerresolution of the anticonvulsant Galodif (1‐((3‐chlorophenyl)(phenyl)methyl) urea) by chiral HPLC was developed, whereas the enantiomeric composition of 1‐((3‐chlorophenyl)(phenyl)methyl) amine—precursor in Galodif synthesis—cannot be resolved by this method. However, starting 1‐((3‐chlorophenyl)(phenyl)methyl) amine quantitatively forms diastereomeric N
OPTICAL ISOMERS OF (+) AND (-)-BENZHYDRYL UREAS AND (+) AND (-)-1-[(3-CHLOROPHENYL)-PHENYL-METHYL] UREA, A PHARMACEUTICAL COMPOSITION BASED THEREON AND A METHOD FOR PRODUCING SAID OPTICAL ISOMERS
申请人:OBSCHESTVO S OGRANICHENNOY OTVETSTVENNOSTIYU "SINTEGAL"
公开号:US20160244404A1
公开(公告)日:2016-08-25
The invention relates to novel substances, and more particularly to optical isomers of (+) and (−)-benzhydryl ureas of formula (I) and (+) and (−)-1-[(3-chlorophenyl)-phenyl-methyl]urea, a pharmaceutical composition based thereon, and a method for producing said optical isomers and for using same on the basis of the different therapeutic activity exhibited. (I) Where R≠R′ and are selected from the group comprising hydrogen, alkyl, halogen, nitro, amino, alkylamino and hydroxy groups and are situated in the ortho-, para- or meta-positions of the benzene rings. When racemic Halodif 1-[(3-chlorophenyl)-phenyl-methyl]urea was separated using the method according to the invention, optical isomers of (+) and (−)-1-[(3-chlorophenyl)-phenyl-methyl]urea (Halodif isomers) with different degrees of therapeutic activity were produced.