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10.1021/cn300020x

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suck abstract from ncbi


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pmid22860223      ACS+Chem+Neurosci 2012 ; 3 (7): 538-45
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  • Exploration of synthetic approaches and pharmacological evaluation of PNU-69176E and its stereoisomer as 5-HT2C receptor allosteric modulators #MMPMID22860223
  • Ding C; Bremer NM; Smith TD; Seitz PK; Anastasio NC; Cunningham KA; Zhou J
  • ACS Chem Neurosci 2012[Jul]; 3 (7): 538-45 PMID22860223show ga
  • Allosteric modulators of the serotonin (5-HT) 5-HT(2C) receptor (5-HT(2C)R) present a unique drug design strategy to augment the response to endogenous 5-HT in a site- and event-specific manner with great potential as novel central nervous system probes and therapeutics. To date, PNU-69176E is the only reported selective positive allosteric modulator for the 5-HT(2C)R. For the first time, an optimized synthetic route to readily access PNU-69176E (1) and its diastereomer 2 has been established in moderate to good overall yields over 10 steps starting from commercially available picolinic acid. This synthetic approach not only enables a feasible preparation of a sufficient amount of 1 for use as a reference compound for secondary pharmacological studies, but also provides an efficient synthesis of key intermediates to develop novel and simplified 5-HT(2C)R allosteric modulators. Compound 1 and its diastereomer 2 were functionally characterized in Chinese hamster ovary (CHO) cells stably transfected with the 5-HT(2C)R using an intracellular calcium (Ca(i) (2+)) release assay. Compound 1 demonstrated efficacy and potency as an allosteric modulator for the 5-HT(2C)R with no intrinsic agonist activity. Compound 1 did not alter 5-HT-evoked Ca(i) (2+) in CHO cells stably transfected with the highly homologous 5-HT(2A)R. In contrast, the diastereomer 2 did not alter 5-HT-evoked Ca(i) (2+) release in 5-HT(2A)R-CHO or 5-HT(2C)R-CHO cells or exhibit intrinsic agonist activity.
  • |Allosteric Regulation/drug effects/physiology[MESH]
  • |Animals[MESH]
  • |CHO Cells[MESH]
  • |Calcium/metabolism[MESH]
  • |Cricetinae[MESH]
  • |Cricetulus[MESH]
  • |Drug Evaluation, Preclinical/methods[MESH]
  • |Galactosides/*chemical synthesis/chemistry/*pharmacology[MESH]
  • |Humans[MESH]
  • |Piperidines/*chemical synthesis/chemistry/*pharmacology[MESH]
  • |Receptor, Serotonin, 5-HT2C/*metabolism/physiology[MESH]


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