BIBB 515

• CAT Number: M098435
• CAS Number: 156635-05-1
• Molecular Formula: C22H21ClN2O2
• Molecular Weight: 380.87
• Purity: ≥95%
• Synonyms: (4-chlorophenyl)-[4-[[4-(4,5-dihydro-1,3-oxazol-2-yl)phenyl]methylidene]piperidin-1-yl]methanone
• InChI: InChI=1S/C22H21ClN2O2/c23-20-7-5-19(6-8-20)22(26)25-12-9-17(10-13-25)15-16-1-3-18(4-2-16)21-24-11-14-27-21/h1-8,15H,9-14H2
• InChIKey: JQNWPWUJMRAASQ-UHFFFAOYSA-N
• SMILES: C1CN(CCC1=CC2=CC=C(C=C2)C3=NCCO3)C(=O)C4=CC=C(C=C4)Cl

BIBB 515 is a potent, selective and orally active 2,3-oxidosqualene cyclase (OSC) inhibitor with ED50 values of 0.2-0.5 mg/kg and 0.36-33.3 mg/kg in rats and mice (1-5 hours), respectively. BIBB 515 exerts lipid-lowering effect mainly by inhibiting the production of low-density lipoprotein (LDL)[1].
Sterol synthesis, 2,3-oxidosqualene cyclase activity, HMGCoA reductase activity, and the specificity of BIBB 51 5 versus 2,3-oxidosqualene cyclase are measured in intact HepG2 cells or cell homogenates.Concentration-dependent inhibition of cholesterol biosynthesis by BIBB 515 as monitored by [14C]-acetate incorporation into digitonin precipitable sterols could be demonstrated in HepG2 cells (ED50 = 4.11 nM). A similar inhibition of OSC activity (ED50= 8.69 nM) is seen in HepC2 cell homogenates. No inhibition of HMGCoA reductasc could be measured in HepG2 cell homogenates at concentrations of BIBB 515 up to 1 and 10 μM[1].
BIBB 515 (16.0-148.2 mg/ kg; oral administration; daily; for 40 days; male golden Syrian hyperlipemic hamsters) treatment shows dose-dependent lipid-lowering activity in normolipemic hamsters (-19% for total cholesterol and -32% for VLDL + LDL cholesterol) and in hyperlipemic hamsters (-25% for total cholesterol and -59% for LDL-cholesterol)[1].

Reference

[1]. Eisele B, et al. Effects of a novel 2,3-oxidosqualene cyclase inhibitor on cholesterol biosynthesis and lipid metabolism in vivo. J Lipid Res. 1997 Mar;38(3):564-75.
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