Sulfonylalkanoylamino hydroxyethylamino sulfonamide retroviral protease inhibitors

a technology of hydroxyethylamino sulfonamide and retroviral protease inhibitor, which is applied in the direction of heterocyclic compound active ingredients, biocide, organic chemistry, etc., can solve the problem that the predictive value of compounds which are effective renin inhibitors is not good for effective hiv protease inhibition

Inactive Publication Date: 2006-11-23
GD SEARLE & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is known that, although renin and HIV proteases are both classified as aspartyl proteases, compounds which are effective renin inhibitors generally are not predictive for effective HIV protease inhibition.

Method used

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  • Sulfonylalkanoylamino hydroxyethylamino sulfonamide retroviral protease inhibitors
  • Sulfonylalkanoylamino hydroxyethylamino sulfonamide retroviral protease inhibitors
  • Sulfonylalkanoylamino hydroxyethylamino sulfonamide retroviral protease inhibitors

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0057]

Preparation of 2S-[Bis(phenylmethyl)amino]benzenepropanol

Method 1: 2S-[Bis(phenylmethyl)amino]benzenepropanol from the DIBAL Reduction of N,N-bis(phenylmethyl)-L-Phenylalanine phenylmethyl ester

Step 1:

[0058] A solution of L-phenylalanine (50.0 g, 0.302 mol) sodium hydroxide (24.2 g, 0.605 mol) and potassium carbonate (83.6 g, 0.605 mol) in water (500 mL) wa heated to 97° C. Benzyl bromide (108.5 mL, 0.605 then slowly added (addition time—25 min). The mixture was stirred at 97° C. for 30 minutes under a nitrogen atmosphere. The solution was cooled to room temperature and extracted with toluene (2×250 mL). The combined organic layers were washed with water and brine, dried over magnesium sulfate, filtered and concentrated to an oil. The identity of the product was confirmed as follows. Analytical TLC (10% ethyl acetate / hexane, silica gel) showed major component at Rf value=0.32 to be the desired tribenzylated compound, N,N-bis(phenylmethyl)-L-phenylalanine phenylmethyl ester...

example 2

[0061]

Preparation of 2S-[Bis(phenylmethyl)amino]benzenepropanaldehyde

Method 1:

[0062] 2S-[Bis(phenylmethyl)amino]benzene-propanol (200 g, 0.604 mol) was dissolved in triethylamine (300 mL, 2.15 mol). The mixture was cooled to 12° C. and a solution of sulfur trioxide / pyridine complex (380 g, 2.39 mol) in DMSO (1.6 L) was added at a rate to maintain the temperature between 8-17° C. (addition time—1.0 h). The solution was stirred at ambient temperature under a nitrogen atmosphere for 1.5 hour at which time the reaction was complete by TLC analysis (33% ethyl acetate / hexane, silica gel). The reaction mixture was cooled with ice water and quenched with 1.6 L of cold water (10-15° C.) over 45 minutes. The resultant solution was extracted with ethyl acetate (2.0 L), washed with 5% citric acid (2.0 L), and brine (2.2 L), dried over MgSO4 (280 g) and filtered. The solvent was removed on a rotary evaporator at 35-40° C. and then dried under vacuum to give 198.8 g of 2S-[Bis-(phenylmethyl)am...

example 3

[0067]

Preparation of N,N-dibenzyl-3(S)-amino-1,2-(S)-epoxy-4-phenylbutane

Method 1:

[0068] A solution of αS-[Bis(phenylmethyl)amino]benzene-propanaldehyde (191.7 g, 0.58 mol) and chloroiodomethane (56.4 mL, 0.77 mol) in tetrahydrofuran (1.8 L) was cooled to −30 to −35° C. (colder temperature such as −70° C. also worked well but warmer temperatures are more readily achieved in large scale operations) in a stainless steel reactor under a nitrogen atmosphere. A solution of n-butyl lithium in hexane (1.6 M, 365 mL, 0.58 mol) was then added at a rate that maintained the temperature below −25° C. After addition the mixture was stirred at −30 to −35° C. for 10 minutes. More additions of reagents were carried out in the following manner: (1) additional chloroiodomethane (17 mL) was added, followed by n-butyl lithium (110 mL) at 100%. Due to the relative instability of the product on silica gel, the crude product is usually used directly in the next step without purification). The diastereo...

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Abstract

Selected sulfonylalkanoylamino hydroxyethylamine sulfonamide compounds are effective as retroviral protease inhibitors, and in particular as inhibitors of HIV protease. The present invention relates to such retroviral protease inhibitors and, more particularly, relates to selected novel compounds, composition and method for inhibiting retroviral proteases, such as human immunodeficiency virus (HIV) protease, prophylactically preventing retroviral infection or the spread of a retrovirus, and treatment of a retroviral infection.

Description

RELATED CASE [0001] This is a continuation-in-part of co-owned and co-pending application Ser. No. 08 / 401,838, filed Mar. 10, 1995.BACKGROUND OF THE INVENTION [0002] The present invention relates to retroviral protease inhibitors and, more particularly, relates to novel compounds, composition and method for inhibiting retroviral proteases, such as human immunodeficiency virus (HIV) protease. This invention, in particular, relates to sulfonylalkanoylamino hydroxyethylamine sulfonamide protease inhibitor compounds, composition and method for inhibiting retroviral proteases, prophylactically preventing retroviral infection or the spread of a retrovirus, and treatment of a retroviral infection, e.g., an HIV infection. The subject invention also relates to processes for making such compounds as well as to intermediates useful in such processes. [0003] During the replication cycle of retroviruses, gag and gag-pol gene transcription products are translated as proteins. These proteins are s...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61K31/428A61K31/423A61K31/4184A61K31/343C07D417/02C07D277/62C07D263/60C07D235/04C07C317/44C07D215/36C07D217/04C07D235/30C07D235/32C07D249/20C07D263/56C07D277/82C07D307/79C07D317/62C07D319/18
CPCC07C317/44C07D319/18C07D217/02C07D217/04C07D235/30C07D235/32C07D249/20C07D263/56C07D277/62C07D277/82C07D307/79C07D307/82C07D311/58C07D317/62C07D215/36
Inventor GETMAN, DANIELDECRESCENZO, GARYFRESKOS, JOHNVAZQUEZ, MICHAELSIKORSKI, JAMESDEVADAS, BALEKUDRUNAGARAJAN, SRINIVASANMCDONALD, JOSEPH
Owner GD SEARLE & CO
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