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Studies toward the discovery of the next generation of antidepressants. 3. Dual 5-HT1A and serotonin transporter affinity within a class of N-aryloxyethylindolylalkylamines.

Authors
  • Mewshaw, Richard E1
  • Zhou, Dahui
  • Zhou, Ping
  • Shi, Xiaojie
  • Hornby, Geoffrey
  • Spangler, Taylor
  • Scerni, Rosemary
  • Smith, Deborah
  • Schechter, Lee E
  • Andree, Terrance H
  • 1 Chemical and Screening Sciences and Neuroscience Discovery Research, Wyeth Research, P.O. Box 42528, Philadelphia, PA 19101-2528, USA. [email protected]
Type
Published Article
Journal
Journal of medicinal chemistry
Publication Date
Jul 15, 2004
Volume
47
Issue
15
Pages
3823–3842
Identifiers
PMID: 15239661
Source
Medline
License
Unknown

Abstract

N-aryloxylethylindolealkylamines (5) having dual 5-HT transporter and 5-HT(1A) affinity are described. These compounds represent truncated analogues of our previously reported piperidinyl derivatives (3). Compounds in this investigation were found to have more similar affinities and functional activities for the 5-HT(1A) receptor and 5-HT transporter. Though 5-HT(1A) antagonism is not consistently observed throughout series 5, several molecular features were found to be essential to obtain high and balanced activities. The proper placement of a heteroatom in the aryl ring and the length of the linkage used to tether the indole moiety had significant influence on 5-HT(1A) and 5-HT transporter affinities. Introduction of a halogen into the aryl ring usually lowered intrinsic activity and in some cases led to full 5-HT(1A) antagonists. Compounds 33 and 34 were observed to be full 5-HT(1A) antagonists with K(i) values of approximately 30 nM for the 5-HT(1A) receptor and K(i) values of 5 and 0.5 nM for the 5-HT transporter, respectively. Unfortunately, similar to our previous series (3), compounds in this report also had high affinity for the alpha(1) receptor.

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