| Stereochemistry | ABSOLUTE |
| Molecular Formula | C20H23N3O2.C4H6O6 |
| Molecular Weight | 487.5024 |
| Optical Activity | UNSPECIFIED |
| Defined Stereocenters | 4 / 4 |
| E/Z Centers | 0 |
| Charge | 0 |
SHOW SMILES / InChI
SMILES
O[C@H]([C@@H](O)C(O)=O)C(O)=O.[H][C@]12N(C)CC[C@@]1(C)C3=C(C=CC(OC(=O)NC4=CC=CC=C4)=C3)N2C
InChI
InChIKey=XKKPTCVQEJZDGT-PWUAAHBCSA-N
InChI=1S/C20H23N3O2.C4H6O6/c1-20-11-12-22(2)18(20)23(3)17-10-9-15(13-16(17)20)25-19(24)21-14-7-5-4-6-8-14;5-1(3(7)8)2(6)4(9)10/h4-10,13,18H,11-12H2,1-3H3,(H,21,24);1-2,5-6H,(H,7,8)(H,9,10)/t18-,20+;1-,2-/m11/s1
| Molecular Formula | C4H6O6 |
| Molecular Weight | 150.0868 |
| Charge | 0 |
| Count |
MOL RATIO
1 MOL RATIO (average) |
| Stereochemistry | ABSOLUTE |
| Additional Stereochemistry | No |
| Defined Stereocenters | 2 / 2 |
| E/Z Centers | 0 |
| Optical Activity | UNSPECIFIED |
| Molecular Formula | C20H23N3O2 |
| Molecular Weight | 337.4155 |
| Charge | 0 |
| Count |
MOL RATIO
1 MOL RATIO (average) |
| Stereochemistry | ABSOLUTE |
| Additional Stereochemistry | No |
| Defined Stereocenters | 2 / 2 |
| E/Z Centers | 0 |
| Optical Activity | UNSPECIFIED |
Phenserine tartrate (phenserine), a phenylcarbamate analog of physostigmine, is a long-acting and centrally active inhibitor of acetylcholinesterase (AChE). In addition to being a potent inhibitor of AChE, it has been demonstrated that phenserine inhibits the formation of beta-APP, the source of neurotoxic beta-amyloid peptide which is a major component of the extraneuronal plaques that pathologically characterize Alzheimer’s disease (AD). Phenserine was developed as a potential therapy for AD by Axonyx, under license from the National Institutes of Health/National Institute on Aging. In March 2005, Axonyx suspended patient recruitment for the ongoing Phase III trials of phenserine, after the drug failed to meet the primary endpoints of the first of these trials.
CNS Activity
Originator
Approval Year
Doses
AEs
Overview
| CYP3A4 | CYP2C9 | CYP2D6 | hERG |
|---|---|---|---|
OverviewOther
| Other Inhibitor | Other Substrate | Other Inducer |
|---|---|---|
Drug as victim
Sourcing
PubMed
Patents
Sample Use Guides
A blinded titration schedule was used so that patients randomized to active treatment received 5 mg of phenserine twice daily for the first 4 weeks of the study followed by 10 mg twice daily for the next 4 weeks. Patients randomized to 15 mg of phenserine twice daily received this dose starting on week 9. Treatment at the assigned dose was continued for up to 26 weeks.
Route of Administration:
Oral
