Biomaterial Database

Direct high-performance liquid chromatographic separation of the enantiomers of methoxy and hydroxy derivatives of 3,4-dihydro-3-(dipropylamino)-2H-1-benzopyrans with dopaminergic activity. 1995

S Caccamese, and G Principato, and M C Viaud, and G Guillaumet

Dipartimento di Scienze Chimiche, Università di Catania, Italy.

The direct HPLC resolution of the enantiomers of methoxy and hydroxy derivatives of 3,4-dihydro-3-(dipropylamino)-2H-1-benzopyrans and of unsubstituted amino compounds was achieved using Chiralcel OD and/or Chiralpak AD stationary phases. The position of the substituent (methoxyl or hydroxyl) in the aromatic ring has a strong effect on the enantioselectivity. Circular dichroism spectra of the single enantiomers of one compound were measured.

UI	MeSH Term	Description	Entries
D008745	Methylation	Addition of methyl groups. In histo-chemistry methylation is used to esterify carboxyl groups and remove sulfate groups by treating tissue sections with hot methanol in the presence of hydrochloric acid. (From Stedman, 25th ed)	Methylations
D002851	Chromatography, High Pressure Liquid	Liquid chromatographic techniques which feature high inlet pressures, high sensitivity, and high speed.	Chromatography, High Performance Liquid,Chromatography, High Speed Liquid,Chromatography, Liquid, High Pressure,HPLC,High Performance Liquid Chromatography,High-Performance Liquid Chromatography,UPLC,Ultra Performance Liquid Chromatography,Chromatography, High-Performance Liquid,High-Performance Liquid Chromatographies,Liquid Chromatography, High-Performance
D002942	Circular Dichroism	A change from planar to elliptic polarization when an initially plane-polarized light wave traverses an optically active medium. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)	Circular Dichroism, Vibrational,Dichroism, Circular,Vibrational Circular Dichroism
D006900	Hydroxylation	Placing of a hydroxyl group on a compound in a position where one did not exist before. (Stedman, 26th ed)	Hydroxylations
D001578	Benzopyrans	Compounds with a core of fused benzo-pyran rings.	Benzopyran,Chromene,Chromenes
D013237	Stereoisomerism	The phenomenon whereby compounds whose molecules have the same number and kind of atoms and the same atomic arrangement, but differ in their spatial relationships. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)	Molecular Stereochemistry,Stereoisomers,Stereochemistry, Molecular,Stereoisomer
D018491	Dopamine Agonists	Drugs that bind to and activate dopamine receptors.	Dopamine Receptor Agonists,Dopaminergic Agonists,Agonists, Dopamine Receptor,Agonists, Dopaminergic,Dopamine Agonist,Dopamine Receptor Agonist,Dopaminergic Agonist,Receptor Agonists, Dopamine,Agonist, Dopamine,Agonist, Dopamine Receptor,Agonist, Dopaminergic,Agonists, Dopamine,Receptor Agonist, Dopamine