Details
| Stereochemistry | ACHIRAL |
| Molecular Formula | C18H19NO.ClH |
| Molecular Weight | 301.811 |
| Optical Activity | NONE |
| Defined Stereocenters | 0 / 0 |
| E/Z Centers | 1 |
| Charge | 0 |
SHOW SMILES / InChI
SMILES
Cl.CNCC\C=C1\C2=CC=CC=C2OCC3=C1C=CC=C3
InChI
InChIKey=GNPPEZGJRSOKRE-QFHYWFJHSA-N
InChI=1S/C18H19NO.ClH/c1-19-12-6-10-16-15-8-3-2-7-14(15)13-20-18-11-5-4-9-17(16)18;/h2-5,7-11,19H,6,12-13H2,1H3;1H/b16-10+;
DescriptionSources: https://www.ncbi.nlm.nih.gov/pubmed/11037801
Sources: https://www.ncbi.nlm.nih.gov/pubmed/11037801
Z-N-desmethyldoxepin is an active metabolite of doxepin, a tricyclic antidepressant. Z-N-desmethyldoxepin appeared to be a terminal oxidative metabolite, in comparison with isomeric form E-N-desmethyl-doxepin, which is undergone further oxidation under the action of CYP2D6 activity.
Originator
Sources: https://www.ncbi.nlm.nih.gov/pubmed/1981729
Curator's Comment: College of Pharmacy, University of Saskatchewan
Approval Year
PubMed
| Title | Date | PubMed |
|---|---|---|
| [Trazodone for the treatment of behavioral and psychological symptoms of dementia (BPSD) in Alzheimer's disease: a retrospective study focused on the aggression and negativism in caregiving situations]. | 2006-06 |
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| Contributions of CYP2D6, CYP2C9 and CYP2C19 to the biotransformation of E- and Z-doxepin in healthy volunteers. | 2002-10 |
|
| Role of cytochrome P450 2D6 (CYP2D6) in the stereospecific metabolism of E- and Z-doxepin. | 2000-10 |
|
| Determination of doxepin and desmethyldoxepin in human plasma using liquid chromatography-tandem mass spectrometry. | 2000-05-26 |
|
| Geometric isomerization of doxepin during its N-demethylation in humans. | 1991-05-01 |
Sample Use Guides
In Vitro Use Guide
Sources: https://www.ncbi.nlm.nih.gov/pubmed/11037801
In 'metabolic consumption' experiments with liver microsomes (having measurable CYP2D6 activity) and initial substrate concentration of 1 microM, the consumption of E-doxepin was greater than that of Z-doxepin. With N-desmethyldoxepin, quinidine inhibited the consumption of E-N-desmethyl-doxepin whereas Z-N-desmethyldoxepin appeared to be a terminal oxidative metabolite. CYP2D6 is a major oxidative enzyme in doxepin metabolism; predominantly catalysing hydroxylation with an exclusive preference for the E-isomers. The relatively more rapid metabolism of E-isomeric forms, and the limited metabolic pathways for the Z-isomers explained the apparent enrichment of Z-N-desmethyldoxepin.
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SUBSTANCE RECORD