Stereochemical studies on medicinal agents. V. Synthesis, configuration, and pharmacological activity of pipradrol enantiomers

Portoghese, Philip S.; Pazdernik, Thomas L.; Kuhn, W.L.; Hite, G.; Shafiee, Abbas

doi:10.1021/jm00307a002

Cited by 36 publications

(19 citation statements)

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“…However, pipradrol was found to possess a stimulant effect on the central nervous system (CNS); it induced incoordinated motor activity and ataxia, followed by tremor and clonic convulsions (Portoghese et al, 1968). Therefore, pipradrol has been removed from the Japanese market and controlled under drug legislation since the 1970s.…”

Section: Japan In 1989mentioning

confidence: 99%

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Recreational drugs, 3,4-Methylenedioxymethamphetamine(MDMA), 3,4-methylenedioxyamphetamine (MDA) and diphenylprolinol, inhibit neurite outgrowth in PC12 cells

et al. 2010

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-3,4-Methylenedioxymethamphetamine (MDMA) is widely abused as a psychoactive recreational drug. It is well known that MDMA induces neurotoxic damage of serotonergic nerve endings. Although drug abuse is increasing among youths, it is unclear whether recreational drugs affect the development of nerve growth. Thus, the present study examined the effect of recreational drugs, such as MDMA, 3,4-methylenedioxyamphetamine (MDA) and diphenylprolinol, a novel recreational drug with a similar chemical structure as that of psychoactive agent pipradrol, on nerve growth factor (NGF)-induced neurite outgrowth. These recreational drugs induced a dose-dependent cell death in PC12 cells. The IC 50 values of MDMA, MDA, R-diphenylprolinol and S-diphenylprolinol were 4.11 mM, 2.75 mM, 1.00 mM and 0.77 mM, respectively, at 24 hr. To examine the effects of these recreational drugs on NGF-induced neurite outgrowth, PC12 cells were treated with NGF together with MDMA, MDA, S-diphenylprolinol or R-diphenylprolinol at low toxic concentrations. The recreational drugs significantly suppressed neurite outgrowth of PC12 cells induced by NGF. The results suggest that these psychoactive recreational drugs may inhibit neurite growth and thus be implicated in their elicited neurotoxicity. LetterThe Journal of Toxicological Sciences (J. Toxicol. Sci.) Vol.35, No.3, 375-381, 2010 Vol. It has been demonstrated that acute MDMA administration induces a rapid release of serotonin (5-HT) (Gdelsky and Nash, 1996) indicating a decrease of 5-HT concentration in brain tissues (Colado et al., 1993). MDMA binds serotonin transporter with high affinity and then inhibits reuptake of 5-HT; MDMA also binds noradrenaline and dopamine transporters with lower affinities (Rothman and Baumann, 2002;Liechti et al., 2000). MDMA inhibits the enzyme tryptophan hydroxylase, the rate-limiting enzyme in serotonin synthesis, and produces a degeneration of serotonergic nerve terminals (Ricaurte et al., 1985;Battaglia et al., 1987;Schmidt and Taylor, 1987;O'Shea et al., 1998). In addition, MDMA is a weak inhibitor of both A and B subtypes of monoamine oxidase (Torre et al., 2004;Parrott, 2005). These observations indicate that MDMA affects brain activity by altering neurotransmission, particularly the sertonergic system. Although use of MDMA by the young generation is widely spread, the effects of the drug on pregnancy and fetal brain are not obvious. It is, therefore, important to clarify the effect of recreational drugs on nerve growth.Diphenylprolinol is a novel recreational drug with a structure similar to that of pipradrol, a drug initially developed to treat obesity (Gelvin et al., 1955). However, pipradrol was found to possess a stimulant effect on the central nervous system (CNS); it induced incoordinated motor activity and ataxia, followed by tremor and clonic convulsions (Portoghese et al., 1968). Therefore, pipradrol has been removed from the Japanese market and controlled under drug legislation since the 1970s. The psychoactive feature of racemic pipr...

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Section: Japan In 1989mentioning

confidence: 99%

“…The psychoactive feature of racemic pipradrol is based on R-pipradrol, which is twice as likely to be active than the racemate. Spipradrol does not show CNS stimulation (Portoghese et al, 1968). It has recently been reported that diphenylprolinol causes high blood pressure and ischemic chest pain (Lidder et al, 2008).…”

mentioning

confidence: 95%

Recreational drugs, 3,4-Methylenedioxymethamphetamine(MDMA), 3,4-methylenedioxyamphetamine (MDA) and diphenylprolinol, inhibit neurite outgrowth in PC12 cells

et al. 2010

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“…Compound 5a was prepared according to the literature. [29] Compounds 13, 14, and 18 were synthesized and characterized by comparison of NMR spectra with previously reported data. [30] Absolute configuration of the predominant enantiomer of epoxides was determined by comparison with the HPLC retention times by using Daicel Chiralcel OD and Daicel Chiralpak AD columns, as reported in the literature.…”

Section: Methodsmentioning

confidence: 99%

Asymmetric Epoxidation of trans‐Chalcones Organocatalyzed by β‐Amino Alcohols

Russo

Lattanzi

2008

Eur J Org Chem

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“…This difference in the affinity of L and D enantiomers of pipradrol and deoxypipradrol to the hypothetical binding sites agrees with experiment. It was demonstrated that only L-pipradrol and L-deoxypipradrol are active as inhibitors of the neuronal capture of NE and dopamine [14,20] and as CNS stimulants [24].…”

Section: Pipradrol and Deoxypipradrol Enantiomersmentioning

confidence: 99%

Comparative Molecular Model Estimation of the Affinity of Phenylethylamines to the Binding Sites of Membrane Transporters

Al'tshuler

2005

Pharm Chem J

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Factors determining the difference in the affinity of phenylethylamines (PEAs) to the binding sites of membrane transporters have been studied using the molecular models of PEA enantiomers built in preferred conformations for such binding. In the molecules of PEA enantiomers having planar anti conformations, the substituents at asymmetric (chiral) atoms interacting with the binding sites can occur in different, favorable or unfavorable, configuration-dependent positions. By estimating the positions of such substituents in a biophase, it is possible to explain the relationship between the structure and the affinity.

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Stereochemical studies on medicinal agents. V. Synthesis, configuration, and pharmacological activity of pipradrol enantiomers

Cited by 36 publications

References 1 publication

Recreational drugs, 3,4-Methylenedioxymethamphetamine(MDMA), 3,4-methylenedioxyamphetamine (MDA) and diphenylprolinol, inhibit neurite outgrowth in PC12 cells

Recreational drugs, 3,4-Methylenedioxymethamphetamine(MDMA), 3,4-methylenedioxyamphetamine (MDA) and diphenylprolinol, inhibit neurite outgrowth in PC12 cells

Asymmetric Epoxidation of trans‐Chalcones Organocatalyzed by β‐Amino Alcohols

Comparative Molecular Model Estimation of the Affinity of Phenylethylamines to the Binding Sites of Membrane Transporters

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