Dolasetron mesylate

Description

Dolasetron was launched as Anzemet in Australia and the US for the prevention of nausea and vomiting in chemotherapy patients. It is a highly potent and very selective antagonist of 5-HT3 receptors ; it is the sixth in this class of compounds to be marketed for the treatment of chemotherapy-induced emesis. The last two approved in this class were Nazasetron (1994) and Ramosetron (1996). Anzemet was prepared by a seven step sequence from a cyclopentenecarboxylic ester via a Robinson-Schopf cyclisation of a dialdehyde into a key 9-azabicyclo[3.3.l]nonan-3-one. In a clinical study with 164 cancer patients treated with Dolasetron mesylate prior to Cisplatin, single doses of 10- 50 mg achieved major control of nausea and emesis in 73% of subjects and were well tolerated. Results from pharmacokinetic studies in humans showed that the clinical effects and duration of action seem to be due mainly to a major plasma metabolite rapidly formed and very potent itself, the (+) enantiomeric alcohol obtained by enzymatic reduction of the cyclic ketone.

Originator

Hoechst Marion Roussel (Germany)

The Uses of Dolasetron mesylate

Dolasetron Mesylate acts as a bridged pseudopelletierine derivative; specific serotonin (5HT3) receptor antagonist. Antiemetic.

The Uses of Dolasetron mesylate

Nausea in chemotherapy;5-HT3 antagonist

The Uses of Dolasetron mesylate

Antidepressant

brand name

Anzemet (Sanofi Aventis.

Veterinary Drugs and Treatments

Dolasetron may be effective in treating severe nausea and vomiting in dogs and cats, particularly if caused by cancer chemotherapy drugs. Because it is given once a day, the injectable form of dolasetron is often preferred over ondansetron, a similarly effective antiemetic. However, for oral use in small animals, dolasetron tablets are too large (50 and 100 mg) to be practically administered.