Stereochemistry | RACEMIC |
Molecular Formula | C17H14BrN3O2S |
Molecular Weight | 404.281 |
Optical Activity | ( + / - ) |
Additional Stereochemistry | Yes |
Defined Stereocenters | 0 / 0 |
E/Z Centers | 0 |
Charge | 0 |
Stereo Comments | AXIAL, RACEMIC |
SHOW SMILES / InChI
SMILES
OC(=O)CSC1=NN=C(Br)N1C2=C3C=CC=CC3=C(C=C2)C4CC4
InChI
InChIKey=FGQFOYHRJSUHMR-UHFFFAOYSA-N
InChI=1S/C17H14BrN3O2S/c18-16-19-20-17(24-9-15(22)23)21(16)14-8-7-11(10-5-6-10)12-3-1-2-4-13(12)14/h1-4,7-8,10H,5-6,9H2,(H,22,23)
Lesinurad (brand name Zurampic) is a urate transporter inhibitor for treating hyperuricemia associated with gout in patients who have not achieved target serum uric acid levels with a xanthine oxidase inhibitor alone. In gout patients, Lesinurad lowered serum uric acid levels and increased renal clearance and fractional excretion of uric acid. Following single and multiple oral doses of Lesinurad to gout patients, dose-dependent decreases in serum uric acid levels and increases in urinary uric acid excretion were observed. Lesinurad reduces serum uric acid levels by inhibiting the function of transporter proteins involved in uric acid reabsorption in the kidney. Lesinurad inhibited the function of two apical transporters responsible for uric acid reabsorption, uric acid transporter 1 (URAT1) and organic anion transporter 4 (OAT4), with IC50 values of 7.3 and 3.7 µM, respectively. URAT1 is responsible for the majority of the reabsorption of filtered uric acid from the renal tubular lumen. OAT4 is a uric acid transporter associated with diuretic-induced hyperuricemia. Lesinurad does not interact with the uric acid reabsorption transporter SLC2A9 (Glut9), located on the basolateral membrane of the proximal tubule cell. Based on in vitro studies, lesinurad is an inhibitor of OATP1B1, OCT1, OAT1, and OAT3; however, lesinurad is not an in vivo inhibitor of these transporters. In vivo drug interaction studies indicate that lesinurad does not decrease the renal clearance of furosemide (substrate of OAT1/3), or affect the exposure of atorvastatin (substrate of OATP1B1) or metformin (substrate of OCT1). Based on in vitro studies, lesinurad has no relevant effect on P-glycoprotein.
CNS Activity
Originator
Approval Year
Cmax
AUC
T1/2
Doses
Overview
CYP3A4 | CYP2C9 | CYP2D6 | hERG |
---|---|---|---|
OverviewOther
Other Inhibitor | Other Substrate | Other Inducer |
---|---|---|
Drug as perpetrator
Drug as victim
Tox targets
Sourcing
Sample Use Guides
ZURAMPIC (Lesinurad ) is recommended at 200 mg once daily in combination with a xanthine oxidase inhibitor, including allopurinol or febuxostat. The maximum daily dose of ZURAMPIC is 200 mg.
Route of Administration:
Oral
OAT1 was expressed in Flp-In 293 cells. [14C]RDEA594 was incubated with cells for 5 minutes at 37C. The reaction was stopped with ice-cold transport medium and cells were lysed with 0.2 ml of 1 N NAOH and radioactivity was measured using liquid scintillation counting. There was saturable uptake of [14C]RDEA594 into oocytes expressing OAT1. The Km was 0.85 μM and Vmax was 13.0 pmol/min/mg protein