Functionalized chloroenamines in aminocyclopropane synthesis - XV. Synthesis of conformationally rigid analogues of [1,4′-bipiperidine]-4′-carboxamide - a common pharmacophoric group
摘要:
6-Piperidino-3-azabicyclo[3.1.0]hexane-6-carboxamide diastereomers 5 and 7 represent conformationally rigid analogues of the pharamacophoric group 1. Compounds 5 and 7 were synthesized with high stereoselectivity via chloroenamines 12a and 13b, respectively. Introduction of a 4-(4-flurophenyl)-4-oxobutyl moiety in 5 and 7 led to derivatives 6 and 8 which correspond to rigid conformers of Pipamperone 2, a neuroleptic drug. An X-ray structure analysis was performed for compound 6; configuration and conformation of 5-8 were determined H-1 NMR spectroscopically. 3',5'-Cyclopipamperone diastereomers 6 and 8 showed different affinities to dopamine receptors D-2L and D-3.
Functionalized chloroenamines in aminocyclopropane synthesis - XV. Synthesis of conformationally rigid analogues of [1,4′-bipiperidine]-4′-carboxamide - a common pharmacophoric group
摘要:
6-Piperidino-3-azabicyclo[3.1.0]hexane-6-carboxamide diastereomers 5 and 7 represent conformationally rigid analogues of the pharamacophoric group 1. Compounds 5 and 7 were synthesized with high stereoselectivity via chloroenamines 12a and 13b, respectively. Introduction of a 4-(4-flurophenyl)-4-oxobutyl moiety in 5 and 7 led to derivatives 6 and 8 which correspond to rigid conformers of Pipamperone 2, a neuroleptic drug. An X-ray structure analysis was performed for compound 6; configuration and conformation of 5-8 were determined H-1 NMR spectroscopically. 3',5'-Cyclopipamperone diastereomers 6 and 8 showed different affinities to dopamine receptors D-2L and D-3.