Abstract:
:A series of lobelane and GZ-793A analogues that incorporate aromatic 4-hydroxy and 4-(2-fluoroethoxy) substituents were synthesized and evaluated for inhibition of [(3)H]dopamine (DA) uptake at the vesicular monoamine transporter-2 (VMAT2) and the dopamine transporter (DAT), and [(3)H]serotonin uptake at the serotonin transporter (SERT). Most of these compounds exhibited potent inhibition of DA uptake at VMAT2 in the nanomolar range (Ki=30-70nM). The two most potent analogues, 7 and 14, both exhibited a Ki value of 31nM for inhibition of VMAT2. The lobelane analogue 14, incorporating 4-(2-fluoroethoxy) and 4-hydroxy aromatic substituents, exhibited 96- and 335-fold greater selectivity for VMAT2 versus DAT and SERT, respectively, in comparison to lobelane. Thus, lobelane analogues bearing hydroxyl and fluoroethoxy moieties retain the high affinity for VMAT2 of the parent compound, while enhancing selectivity for VMAT2 versus the plasmalemma transporters.
journal_name
Bioorg Med Chem Lettjournal_title
Bioorganic & medicinal chemistry lettersauthors
Joolakanti SR,Nickell JR,Janganati V,Zheng G,Dwoskin LP,Crooks PAdoi
10.1016/j.bmcl.2016.03.119subject
Has Abstractpub_date
2016-05-15 00:00:00pages
2422-2427issue
10eissn
0960-894Xissn
1464-3405pii
S0960-894X(16)30351-1journal_volume
26pub_type
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