Agents for the treatment of overactive detrusor. V. Synthesis and inhibitory activity on detrusor contraction of N-tert-butyl-4,4-diphenyl-2-cyclopentenylamine.
N-tert-Butyl-4,4-diphenyl-2-cyclopentenylamine ((+/-)-3) was designed to restrict the conformation of terodiline 1 and was synthesized in a 6-step approach starting with diphenylacetaldehyde (10) or in a 4-step approach starting with 2,2-diphenyl-4-pentenoic acid (17). Using di-p-toluoyltartaric acid as a resolving agent, the synthetic (+/-)-3 was resolved into its optically pure forms, (-)- and (+)-3. The (-)-enantiomer (-)-3.HCl (FK584) showed about ten times more potent inhibitory activity on urinary bladder rhythmic contraction in rats (ED30 = 0.18 mg/kg, i.v.) than terodiline (ED30 = 1.9 mg/kg, i.v.), while the (+)-enantiomer (+)-3.HCl showed no inhibitory activity at 1.0 mg/kg i.v. Compound (-)-3.HCl (FK584) has pharmacological properties similar to those of terodiline, as evaluated by in vitro assay and is currently in clinical development for the treatment of overactive detrusor.
New Drug Research Laboratories, Fujisawa Pharmaceutical Co. Ltd., Osaka, Japan.
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Take
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Okumura
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Tsubaki
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Taniguchi
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Terai
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Shiokawa
D000588:Amines / Q000494:pharmacology; D000818:Animals; D001559:Benzhydryl Compounds / Q000494:pharmacology; D002082:Butylamines / Q000494:pharmacology; D003517:Cyclopentanes / Q000138:chemical synthesis* / Q000494:pharmacology; D004558:Electric Stimulation; D006168:Guinea Pigs; D066298:In Vitro Techniques; D018721:Muscarinic Agonists / Q000494:pharmacology; D009119:Muscle Contraction / Q000187:drug effects; D009126:Muscle Relaxation / Q000187:drug effects; D009130:Muscle, Smooth / Q000187:drug effects* / Q000502:physiology; D009184:Mydriatics / Q000494:pharmacology; D010276:Parasympatholytics / Q000494:pharmacology; D011680:Pupil / Q000187:drug effects; D051381:Rats; D017207:Rats, Sprague-Dawley; D013237:Stereoisomerism; D001743:Urinary Bladder / Q000187:drug effects* / Q000502:physiology
D000588:Amines; D001559:Benzhydryl Compounds; D002082:Butylamines; D003517:Cyclopentanes; D018721:Muscarinic Agonists; D009184:Mydriatics; C102407:N-tert-butyl-4,4-diphenyl-2-cyclopentenylamine; D010276:Parasympatholytics; C092685:4,4-diphenyl-2-cyclopentenylamine; C010637:terodiline