| Stereochemistry | ACHIRAL |
| Molecular Formula | C10H7Cl2N3O.ClH.H2O |
| Molecular Weight | 310.564 |
| Optical Activity | NONE |
| Defined Stereocenters | 0 / 0 |
| E/Z Centers | 0 |
| Charge | 0 |
SHOW SMILES / InChI
SMILES
O.Cl.ClC1=CC=C2NC3=NC(=O)CN3CC2=C1Cl
InChI
InChIKey=YLFXXKJQBOJJIX-UHFFFAOYSA-N
InChI=1S/C10H7Cl2N3O.ClH.H2O/c11-6-1-2-7-5(9(6)12)3-15-4-8(16)14-10(15)13-7;;/h1-2H,3-4H2,(H,13,14,16);1H;1H2
Anagrelide is an orally active quinazinolone derivative that was originally developed as an antiplatelet drug. The drug inhibits cyclic nucleotide phosphodiesterase III (PDEIII) and phopholipase A2, which is thought to cause the side effects of vasodilation, positive inotropism, reduced platelet aggregation. However, significant inhibition of platelet aggregation is observed only at doses of anagrelide higher than those required to reduce platelet count. It is indicated for the treatment of patients with thrombocythemia, secondary to myeloproliferative disorders. Commonly reported side effects of anagrelide include: abdominal pain, dizziness, headache, nausea, and palpitations. Other side effects include: back pain, fever, tachycardia, vomiting, and anorexia. There is a single case report, which suggests that sucralfate may interfere with anagrelide absorption. Anagrelide is an inhibitor of cyclic AMP PDE III. The effects of medicinal products with similar properties such as inotropes milrinone, enoximone, amrinone, olprinone and cilostazol may be exacerbated by anagrelide.
Originator
Approval Year
Doses
AEs
Sourcing
PubMed
Sample Use Guides
0.5 mg qid or 1 mg bid (2 capsules of 0.5 mg twice a day) for at least one week
Route of Administration:
Oral
Anagrelide was studied as an inhibitor of PDE fractions I, II and III separated from each other from rabbit heart supernatant. Anagrelide did not inhibit PDE I or II except at a concentration of 10(-4) M where inhibition of 33 and 39%, respectively, was noted. As expected, anagrelide inhibited PDE fraction III with a dose-response curve that was closely similar to that seen in the human platelet preparation. The IC50 for inhibition of the rabbit heart PDE fraction III was 7 x 10(-8) M.
ACTIVE MOIETY
SUBSTANCE RECORD
