Synthetic mimetics of host defense and uses thereof

1. A method of preparing the compound having the formula

comprising:

a) reacting (R)-(−)-N-Boc-3-pyrrolidinol with a strong base to form a mixture; further reacting the mixture with 2-chloro-5-(trifluoromethyl)-1,3-dinitrobenzene to form a compound having Formula II

b) reacting the compound of Formula II with an alcohol and a transition metal catalyst in the presence of hydrogen to form a compound of Formula III

c) adding the compound of Formula III and pyrimidine-4,6-dicarboxylic acid to a mixture of 2-chloro-4,6-dimethoxy-1,3,5-triazine and N-methylmorpholine to form a compound of Formula IV

d) reacting the compound of Formula IV with N-Boc-guanidine butyric acid to form a compound of Formula V

e) deprotecting the compound of Formula V to produce the compound; or

a) deprotonating (R)-3-Hydroxypyrrolidine-1-carboxylic acid tert-butyl ester, and reacting the resultant compound with 2-chloro-1,3-dinitro-5-trifluoromethylbenzene to form (R)-3-(2,6-dinitro-4-trifluoromethylphenoxy)pyrrolidine-1-carboxylic acid tert-butyl ester;

b) reducing (R)-3-(2,6-dinitro-4-trifluoromethylphenoxy)pyrrolidine-1-carboxylic acid tert-butyl ester in the presence of an alcohol, a transition metal catalyst, and hydrogen to form (R)-3-(2,6-diamino-4-trifluoromethylphenoxy)-pyrrolidine-1-carboxylic acid tert-butyl ester;

c) coupling (R)-3-(2,6-diamino-4-trifluoromethylphenoxy)-pyrrolidine-1-carboxylic acid tert-butyl ester with pyrimidine-4,6-dicarboxylic acid in the presence of 1-[(3-(dimethylamino)-propyl)]-3-ethylcarbodiimide hydrochloride to form pyrimidine-4,6-dicarboxylic acid bis-{[3-amino-2-((R)-1-(tert-butoxycarbonyl)pyrrolidin-3-yloxy)-5-trifluoromethyl-phenyl]amide};

d) reacting pyrimidine-4,6-dicarboxylic acid bis-{[3-amino-2-((R)-1-(tert-butoxycarbonyl)pyrrolidin-3-yloxy)-5-trifluoromethyl-phenyl]amide} with ({[(tert-butoxycarbonyl)amino][(tert-butoxycarbonyl)imino]methyl}amino)pentanoic acid in the presence of phosphorous oxychloride to form pyrimidine-4,6-dicarboxylic acid bis-{[3-(5-({[(tert-butoxycarbonyl)amino][(tert-butoxycarbonyl)imino]methyl}amino)-pentanoylamino)-2-((R)-1-(tert-butoxycarbonyl)-pyrrolidin-3-yloxy)-5-trifluoromethyl-phenyl]-amide};

e) deprotecting pyrimidine-4,6-dicarboxylic acid bis-{[3-(5-({[(tert-butoxycarbonyl)amino][(tert-butoxycarbonyl)imino]methyl}amino)-pentanoylamino)-2-((R)-1-(tert-butoxycarbonyl)-pyrrolidin-3-yloxy)-5-trifluoromethyl-phenyl]-amide} to form crude pyrimidine-4,6-dicarboxylic acid bis-{[3-(5-guanidino-pentanoylamino)-2-((R)-pyrrolidin-3-yloxy)-5-trifluoromethyl-phenyl]-amide}tetrahydrochloride; and

f) purifying crude pyrimidine-4,6-dicarboxylic acid bis-{[3-(5-guanidino-pentanoylamino)-2-((R)-pyrrolidin-3-yloxy)-5-trifluoromethyl-phenyl]-amide}tetrahydrochloride by reverse-phase chromatography; or

a) deprotonating (R)-3-Hydroxypyrrolidine-1-carboxylic acid tert-butyl ester and further reacting the resultant compound with 2-chloro-1,3-dinitro-5-trifluoromethylbenzene to form (R)-3-(2,6-dinitro-4-trifluoromethylphenoxy)pyrrolidine-1-carboxylic acid tert-butyl ester;

b) reducing (R)-3-(2,6-dinitro-4-trifluoromethylphenoxy)pyrrolidine-1-carboxylic acid tert-butyl ester in the presence of an alcohol, a transition metal catalyst, and hydrogen, to form (R)-3-(2,6-diamino-4-trifluoromethylphenoxy)-pyrrolidine-1-carboxylic acid tert-butyl ester;

c) coupling (R)-3-(2,6-diamino-4-trifluoromethylphenoxy)-pyrrolidine-1-carboxylic acid tert-butyl ester with pyrimidine-4,6-dicarboxylic acid in the presence of 1-[(3-(dimethylamino)-propyl)]-3-ethylcarbodiimide hydrochloride to form pyrimidine-4,6-dicarboxylic acid bis-{[3-amino-2-((R)-1-(tert-butoxycarbonyl)pyrrolidin-3-yloxy)-5-trifluoromethyl-phenyl]amide};

d) reacting pyrimidine-4,6-dicarboxylic acid bis-{[3-amino-2-((R)-1-(tert-butoxycarbonyl)pyrrolidin-3-yloxy)-5-trifluoromethyl-phenyl]amide} with N-Cbz acid in the presence of thionyl chloride;

e) reducing the resultant compound of d) in the presence of an alcohol, a transition metal catalyst, and hydrogen;

f) reacting the resultant compound of e) with di-Boc pyrazole;

g) deprotecting the resultant compound off) to produce the compound.

2. A method of preparing a pharmaceutically acceptable salt of the compound having the formula

comprising:

a) reacting (R)-(−)-N-Boc-3-pyrrolidinol with a strong base to form a mixture; further reacting the mixture with 2-chloro-5-(trifluoromethyl)-1,3-dinitrobenzene to form a compound having Formula II

b) reacting the compound of Formula II with an alcohol and a transition metal catalyst in the presence of hydrogen to form a compound of Formula III

c1) adding the compound of Formula III and pyrimidine-4,6-dicarboxylic acid to a mixture of 2-chloro-4,6-dimethoxy-1,3,5-triazine and N-methylmorpholine to form a compound of Formula IV

or

c2) adding the compound of Formula III and pyrimidine-4,6-dicarboxylic acid to a mixture of 1-ethyl-3-[3-(dimethylamino)propyl]-carbodiimide hydrochloride (EDCl) and anhydrous pyridine to form a compound of Formula IV

d) adding the compound of Formula IV with an N-Cbz acid to a solution comprising anhydrous pyridine, dimethylaminopropylamine, and any one of thionyl chloride, POCl 3 , (EtO) 2 POCl, or oxalyl chloride to form a compound of Formula Va

e) hydrogenlysis of the Cbz group of the compound of Formula Va to produce the compound of formula VI

f) protecting the compound of Formula VI to produce the compound of formula VII

and

g) deprotecting the compound of Formula VII to produce a pharmaceutically acceptable salt of the compound.