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Paritaprevir dihydrate

Names

[ CAS No. ]:
1456607-71-8

[ Name ]:
Paritaprevir dihydrate

[Synonym ]:
UNII:HRQ5901O78
Paritaprevir dihydrate
Cyclopropa[e]pyrrolo[1,2-a][1,4]diazacyclopentadecine-14a(5H)-carboxamide, N-(cyclopropylsulfonyl)-1,2,3,6,7,8,9,10,11,13a,14,15,16,16a-tetradecahydro-6-[[(5-methyl-2-pyrazinyl)carbonyl]amino]-5,16-dioxo-2-(6-phenanthridinyloxy)-, (2R,6S,12Z,13aS,14aR,16aS)-, hydrate (1:2)
(2R,6S,12Z,13aS,14aR,16aS)-N-(Cyclopropylsulfonyl)-6-{[(5-methyl-2-pyrazinyl)carbonyl]amino}-5,16-dioxo-2-(6-phenanthridinyloxy)-1,2,3,6,7,8,9,10,11,13a,14,15,16,16a-tetradecahydrocyclopropa[e]pyrrolo[1,2-a][1,4]diazacyclopentadecine-14a(5H)-carboxamide dihydrate

Biological Activity

[Description]:

Paritaprevir (ABT-450) dihydrate is a potent, orally active and antiviral non-structural protein 3/4A (NS3/4A) protease inhibitor with EC50s of 1 and 0.21 nM against HCV 1a and 1b, respectively. Paritaprevir dihydrate is also a SARS-CoV 3CLpro inhibitor with an IC50 of 1.31 μM. Paritaprevir dihydrate is metabolized primarily by cytochrome P450 (CYP) 3A. The plasma concentration and half-life of Paritaprevir dihydrate can be enhanced by Ritonavir (a CYP450 inhibitor)[1][2][3][4].

[Related Catalog]:

Signaling Pathways >> Anti-infection >> HCV
Research Areas >> Infection
Signaling Pathways >> Anti-infection >> SARS-CoV
Signaling Pathways >> Metabolic Enzyme/Protease >> HCV Protease

[Target]

EC50: 1 nM (HCV 1a), 0.21 nM (HCV 1b)[1] IC50: 1.31 μM (SARS-CoV 3CLpro)[3]


[In Vitro]

Paritaprevir has in vitro antiviral activity against HCV GT1-4 and GT6 (EC50 range, 0.09 to 19 nM), with an EC50 of 0.09 nM against GT4a[2].

[In Vivo]

The combination of Paritaprevir, Ritonavir, Ombitasvir (an NS5A protein inhibitor), and Dasabuvir (an NS5B non-nucleoside polymerase inhibitor) with or without RBV has been approved to treat HCV genotype 1 infections[1][4]. The acute toxicity of Paritaprevir is considered to be low. Single oral doses of ≤600 mg/kg in rats and ≤100 mg/kg in dogs produces no mortality and were well tolerated. However, since Paritaprevir is administered without ritonavir as a PK enhancer, the exposures are low, especially in male rats (rat 600 mg/kg, males: Cmax 1.82 μg/mL, AUC0-24 8.89 μg·h/mL; dog 100 mg/kg, mean: Cmax 61.3 μg/mL, AUC0-24 285 μg·h/mL).

[References]

[1]. Smith MA,et al. Profile of paritaprevir/ritonavir/ombitasvir plus dasabuvir in the treatment of chronic hepatitis C virus genotype 1 infection. Drug Des Devel Ther. 2015 Nov 13;9:6083-94.

[2]. Schnell G, et al. Hepatitis C Virus Genotype 4 Resistance and Subtype Demographic Characterization of Patients Treated with Ombitasvir plus Paritaprevir/ritonavir. Antimicrob Agents Chemother. 2015 Aug 17. pii: AAC.01229-15.

[3]. Qi Sun, et al. Bardoxolone and bardoxolone methyl, two Nrf2 activators in clinical trials, inhibit SARS-CoV-2 replication and its 3C-like protease. Signal Transduct Target Ther. 2021 May 29;6(1):212.

[4]. Menon RM, et al. Drug-drug interaction profile of the all-oral anti-hepatitis C virus regimen of paritaprevir/ritonavir, ombitasvir, and dasabuvir. J Hepatol. 2015 Jul;63(1):20-9.

Chemical & Physical Properties

[ Molecular Formula ]:
C40H43N7O7S.2(H2O)

[ Molecular Weight ]:
801.908

[ Exact Mass ]:
801.315613

Related Compounds