OATD-01

• CAT Number: I033763
• CAS Number: 2088453-21-6
• Molecular Formula: C19H27ClN6O
• Molecular Weight: 390.91
• Purity: ≥95%
• Synonyms: 3-[4-[(2S,5S)-5-[(4-chlorophenyl)methyl]-2-methylmorpholin-4-yl]piperidin-1-yl]-1H-1,2,4-triazol-5-amine
• InChI: InChI=1S/C19H27ClN6O/c1-13-11-26(17(12-27-13)10-14-2-4-15(20)5-3-14)16-6-8-25(9-7-16)19-22-18(21)23-24-19/h2-5,13,16-17H,6-12H2,1H3,(H3,21,22,23,24)/t13-,17-/m0/s1
• InChIKey: STWVLEKJQQRGMO-GUYCJALGSA-N
• SMILES: CC1CN(C(CO1)CC2=CC=C(C=C2)Cl)C3CCN(CC3)C4=NNC(=N4)N

OATD-01 is a highly potent, first-in-class, orally active and selective chitinase inhibitor with low nanomolar activity toward CHIT1 (hCHIT1,IC50=23 nM). OATD-01 shows excellect PK profile in multiple species and is selectivity against a panel of other off-targets. OATD-01 exhibits significant antifibrotic efficacy in vivo and can be used for pulmonary fibrosis (IPF) research[1].
OATD-01 exhibits high affinity toward h/mCHIT1 and h/mAMCase, and the inhibitory constants (Ki) for all four enzymes are 17.3 nM, 26.05 nM, 4.8 nM and 5.7 nM, respectively[1]. These Ki values reveals good correlation with earlier established IC50 data, the IC50 values are 23 nM, 28 nM, 9 nM and 7.8 nM for hCHIT1,mCHIT1, hAMCase and mAMCase, respectively.[1].Off-target in vitro effects of compound OATD-01 have been evaluated at 10 μM in the Eurofins Panlabs panel of 98 in vitro binding and enzymatic assays, involving diverse molecular classes of proteins[1].
OATD-01 (oral gavage; 30 mg/kg, 100 mg/kg; once daily; 21 days) shows significant antifibrotic efficacy in an animal model of bleomycin-induced pulmonary fibrosis. It reduces the degree of lung fibrosis in a dose-dependent manner, ultimately achieving comparable therapeutic efficacy to reference treatment with Nintedanib in this animal model[1].

Reference

[1]. Robert Koralewski, et al. Discovery of OATD-01, a First-in-Class Chitinase Inhibitor as Potential New Therapeutics for Idiopathic Pulmonary Fibrosis. J Med Chem. 2020 Dec 24;63(24):15527-15540.
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