| Stereochemistry | ACHIRAL |
| Molecular Formula | C17H20N2O2 |
| Molecular Weight | 284.3529 |
| Optical Activity | UNSPECIFIED |
| Defined Stereocenters | 3 / 3 |
| E/Z Centers | 0 |
| Charge | 0 |
SHOW SMILES / InChI
SMILES
CN1[C@H]2CC[C@@H]1C[C@@H](C2)OC(=O)C3=CNC4=C3C=CC=C4
InChI
InChIKey=ZNRGQMMCGHDTEI-ITGUQSILSA-N
InChI=1S/C17H20N2O2/c1-19-11-6-7-12(19)9-13(8-11)21-17(20)15-10-18-16-5-3-2-4-14(15)16/h2-5,10-13,18H,6-9H2,1H3/t11-,12+,13+
| Molecular Formula | C17H20N2O2 |
| Molecular Weight | 284.3529 |
| Charge | 0 |
| Count |
MOL RATIO
1 MOL RATIO (average) |
| Stereochemistry | ABSOLUTE |
| Additional Stereochemistry | No |
| Defined Stereocenters | 3 / 3 |
| E/Z Centers | 0 |
| Optical Activity | UNSPECIFIED |
Tropisetron (Tropisetron-AFT) is a potent and selective serotonin 3 (5-hydroxytryptamine3; 5-HT3) receptor antagonist with antiemetic properties, probably mediated via antagonism of receptors both at peripheral sites and in the central nervous system. Surgery and treatment with certain substances, including some chemotherapeutic agents, may trigger the release of serotonin from enterochromaffin-like cells in the visceral mucosa and initiate the emesis reflex and its accompanying feeling of nausea. Tropisetron (Tropisetron-AFT) selectively blocks the excitation of the presynaptic 5-HT3 receptors of the peripheral neurons in this reflex, and may exert additional direct actions within the CNS on 5-HT3 receptors mediating the actions of vagal input to the area postrema.
CNS Activity
Originator
Approval Year
Cmax
AUC
T1/2
Doses
AEs
Overview
| CYP3A4 | CYP2C9 | CYP2D6 | hERG |
|---|---|---|---|
OverviewOther
| Other Inhibitor | Other Substrate | Other Inducer |
|---|---|---|
Drug as perpetrator
Drug as victim
Tox targets
PubMed
Sample Use Guides
Prevention of nausea and vomiting induced by cytotoxic therapy:
Tropisetron-AFT is recommended as six-day courses of 5 mg per day, given intravenously on day 1 immediately before cancer chemotherapy followed by oral administration on days 2 to 6.
Treatment and prevention of post-operative nausea and vomiting:
Tropisetron-AFT is recommended as a 2 mg dose given intravenously. For the prevention of post- operative nausea and vomiting, tropisetron should be administered shortly before the induction of anaesthesia.
Route of Administration:
Intravenous
The effects of tropisetron on 5-HT3 receptors were examined in N1E-115 mouse neuroblastoma x rat glioma hybrid cells. The 5HT3 receptor ligand [3H] quipazine was displaced by tropisetron with Ki value of 2.25 nM. IC50 value for inhibition of 5HT-induced inward current by tropisetron was 0.22 nM at a holding potential of -65 mV.
