Coronaridine

• CAT Number: I045533
• CAS Number: 467-77-6
• Molecular Formula: C21H26N2O2
• Molecular Weight: 338.44
• Purity: ≥95%
• Synonyms: methyl (1S,15R,17S,18S)-17-ethyl-3,13-diazapentacyclo[13.3.1.02,10.04,9.013,18]nonadeca-2(10),4,6,8-tetraene-1-carboxylate
• InChI: InChI=1S/C21H26N2O2/c1-3-14-10-13-11-21(20(24)25-2)18-16(8-9-23(12-13)19(14)21)15-6-4-5-7-17(15)22-18/h4-7,13-14,19,22H,3,8-12H2,1-2H3/t13-,14+,19+,21-/m1/s1
• InChIKey: NVVDQMVGALBDGE-PZXGUROGSA-N
• SMILES: CCC1CC2CC3(C1N(C2)CCC4=C3NC5=CC=CC=C45)C(=O)OC

Coronaridine, an iboga type alkaloid, inhibits the wnt signaling pathway by decreasing β-catenin expression[1].
Coronaridine (0-40 μM; 24 hours) is against non-cancer cells with IC50 values >40 μM. It agaisnt wnt-dependent cells with IC50 values of 10.4, 11.6 and 24.4 μM for SW480, HCT116 and DLD1cells, respectively[1].Coronaridine (0-40 μM; 24 hours) inhibits β-catenin expression, but the protein levels of p-β–catenin at Ser33, Ser37, and Thr41 and p-β-catenin at Ser 45 [p-b-catenin (S45)] are unchanged[1].In whole-cell patch clamp recordings,Catharanthine (1-300 μM) are respectively co-applied with GABA at concentrations corresponding to the EC30 value for each receptor subtype. Both congeners potentiated different GABAARs in a concentration-dependent manner[2].At higher concentrations, however, Catharanthine starts to inhibit GABA-activated currents due to the reduced amplitude and rebound current, where the threshold concentration depended on the receptor subtype (e.g., > 30 μM for hα1β2; > 100 μM for hα1β2γ2 and hα2β2γ2). The PAM activity of Catharanthine’s are depended on the receptor subtype: hα1β2 (4.6±0.8 μM), >hα2β2γ2 (12.6±3.8 μM), hα1β2γ2 (14.4 ± 4.6 μM)[2].

Reference

[1]. Kensuke Ohishi, et al. Coronaridine, an iboga type alkaloid from Tabernaemontana divaricata, inhibits the Wnt signaling pathway by decreasing β-catenin mRNA expression. Bioorg Med Chem Lett. 2015 Sep 15;25(18):3937-40.
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[2]. Hugo R Arias, et al. Coronaridine congeners potentiate GABA A receptors and induce sedative activity in mice in a benzodiazepine-insensitive manner. Prog Neuropsychopharmacol Biol Psychiatry. 2020 Jul 13;101:109930
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