635728-49-3

Usage

Uses

Used in Pharmaceutical Industry:
Unii-33o78xf0bw is used as an HIV protease inhibitor for treating HIV infection. It works by inhibiting the activity of the HIV protease enzyme, which is essential for the replication of the virus. This helps to reduce the viral load and slow down the progression of the disease.
Used in Antiviral Applications:
Unii-33o78xf0bw is used as an antiviral agent for the treatment of HIV-1 infection. It is effective against a wide range of HIV strains, including those that have developed resistance to other protease inhibitors.
Used in COVID-19 Research:
Unii-33o78xf0bw is used as a research product in the context of COVID-19. Its potential antiviral properties are being investigated for possible applications in treating or preventing the SARS-CoV-2 virus, which causes COVID-19.

Biological Activity

darunavir ethanolate is a nonpeptidic hiv protease inhibitor approved for the treatment of hiv infection[1].transepithelial transport of darunavir in caco-2 cell monolayers is 2-fold greater in the basal-to-apical direction compared to that in the opposite direction. in l-mdr1 cell, darunavir (121 mm) inhibits p-glycoprotein-mediated efflux of calcein-acetoxymethyl ester[1].darunavir is effective against wild-type and pi-resistant hiv, and has a low oral bioavailability (37%). when used in combination with ritonavir, bioavailability can be increased to 82%[2].[1]. fujimoto h, higuchi m, watanabe h, et al. p-glycoprotein mediates efflux transport of darunavir in human intestinal caco-2 and abcb1 gene-transfected renal llc-pk1 cell lines. biological & pharmaceutical bulletin, 2009, 32(9): 1588-1593.[2]. bhalekar mr, et al. in-vivo bioavailability and lymphatic uptake evaluation of lipid nanoparticulates of darunavir. drug deliv, 2016, 23(7): 2581-2586.

Upstream product

• 169280-56-2 4-amino-N-(2R,3S)(3-amino-2-hydroxy-4-phenylbutyl)-N-isobutylbenzenesulfonamide 
• 98760-08-8 (2R,3S)-3-[N-(tert-butyloxycarbonyl)amino]-1,2-epoxy-4-phenylbutane 
• 160232-08-6 (2R,3S)-3-tert-butoxycarbonylamino-1-isobutylamino-4-phenyl-2-butanol 
• 191226-98-9 [(1S,2R)-3-[(4-nitrophenylsulfonyl)(2-methylpropyl)amino]-2-hydroxy-1-(phenylmethyl)propyl]carbamic acid tert-butyl ester 
• 183004-94-6 3-S-(N-tert-butyloxyformamido)-[2R-hydroxy-1-[(4-aminophenylsulfonyl)(2-methylpropyl)]amino]-4-phenylbutane 
• 98760-08-8 (1-oxiranyl-2-phenylethyl)carbamic acid tert-butyl ester 
• 64-17-5 ethanol 
• 192725-55-6 (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl-(4-nitrophenyl)carbonic acid 
• 206361-99-1 darunavir 

Downstream Products

• 206361-99-1 darunavir 

Relevant academic research and scientific papers

An improved and robust scale-up process aided with identification and control of critical process impurities in darunavir ethanolate

A robust and safe industrial process, including five isolations and drying steps for widely prescribed anti-HIV (protease inhibitor) drug darunavir ethanolate 2, has been developed. A salient feature of this process is the development of procedures enabling the efficient synthesis of multi-kilogram quantity of darunavir ethanolate, and process demonstrations through plant scale preparation are offered where darunavir molecule has been prepared with overall > 70% chemical yield and > 99.8% purity without involving any purification procedure(s), with all possible process impurities below than the desired limit (not more than 0.08%) were isolated, synthesized and characterized. The developed process is entirely robust, very efficient and demonstrated up to kilograms scale.

PROCESS FOR THE PREPARATION OF DARUNAVIR

A process for the preparation of Darunavir comprises the reacting of 4-amino-N-(2R,3S) (3-amino-2-hydroxy-4-phenylbutyl)-N-isobutyl-benzenesulfonamide with (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-ol derivative in N-methyl-2-pyrrolidinone and isolating the resulting Darunavir. The process yields Darunavir with a very low level of the difuranyl impurity.

A NOVEL PROCESS FOR PREPARATION OF DARUNAVIR AND DARUNAVIR ETHANOLATE OF FINE PARTICLE SIZE

The present invention provides a novel process for preparation of darunavir that involves reduction of [(1S,2R)-3-[[(4-nitrophenyl)sulfonyl](2-methylpropyl)amino]-2-hydroxy -1-(phenylmethyl) propyl] carbamic acid (3R,3aS,6aR)-hexahydrofuro [2,3-b]furan-3-yl ester, of formula (5). The present invention also provides darunavir ethanolate of particle size wherein d0.9 is less than 130 μm, d0.5 is less than 30 μm, d0.1 is less than 10 μm and process for its preparation.