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Title: Rti-336  
Author: World Heritage Encyclopedia
Language: English
Subject: Phenyltropane, RTI-112, RTI-177, RTI-31
Publisher: World Heritage Encyclopedia


RTI-336, (LS-193,309, (-)-2β-(3-(4-methylphenyl)isoxazol-5-yl)-3β-(4-chlorophenyl)tropane) is a phenyltropane derivative which acts as a potent and selective dopamine reuptake inhibitor and stimulant drug. It binds to the dopamine transporter with around 20x the affinity of cocaine,[1] however it produces relatively mild stimulant effects, with a slow onset and long duration of action.[2] These characteristics make it a potential candidate for treatment of cocaine addiction, as a possible substitute drug analogous to how methadone is used for treating heroin abuse.[3][4] RTI-336 fully substitutes for cocaine in addicted monkeys and supports self-administration,[5][6] and significantly reduces rates of cocaine use, especially when combined with SSRIs,[7] and research is ongoing to determine whether it could be a viable substitute drug in human cocaine addicts.


Lower reinforcing strength of the phenyltropane cocaine analogs RTI-336 and RTI-177 compared to cocaine in nonhuman primates.

Influence of chronic dopamine transporter inhibition by RTI-336 on motor behavior, sleep and hormone levels in rhesus monkeys.

Pharmacotherapy for Cocaine Abuse

Development of the Dopamine Transporter Selective RTI-336 as a Pharmacotherapy for Cocaine Abuse (FIC, et al. 2006).


RTI X R [3H]CFT [3H]Nisoxetine [3H]Paroxetine N ÷ D S ÷ D
Coc 89.1 3298 (1986) 1045 (45) 37.01 11.79
177 Cl phenyl 1.28 504 (304) 2420 (220) 393.8 1891
176 Me phenyl 1.58 398 (239) 5110 (465) 251.9 3234
354 Me ethyl 1.62 299 (180) 6400 (582) 184.6 3951
336 Cl p-cresyl 4.09 1714 (1033) 5741 (522) 419.1 1404
386 Me p-anisyl 3.93 756 (450) 4027 (380) 192.4 1025

N.B. RTI-371[8]

See also


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