US2006241081A1PendingUtilityA1

Novel compounds and methods for therapy

Assignee: REGA STICHTINGPriority: Jun 16, 2003Filed: Jun 23, 2006Published: Oct 26, 2006
Est. expiryJun 16, 2023(expired)· nominal 20-yr term from priority
A61P 31/20A61P 31/18C07F 9/6512A61P 31/12A61P 31/00A61K 31/505
50
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Claims

Abstract

Novel compounds are provided having formula (I) where R 1 , R 2 , R 3 , R 4 , Z, X and * are defined herein. Also provided are antiviral methods for use and processes for synthesis of the compounds of formula (I).

Claims

exact text as granted — not AI-modified
1 . A compound of the formula (I):  
       
         
           
           
               
               
           
         
         wherein  
         * designates a chiral carbon atom;  
         R 1  is H, amino, or methylsulfanyl;  
         R 2  is H, methyl, halo, —N(R 5 ) 2 , hydroxy, or protected hydroxy;  
         R 3  is independently methyl, hydroxymethyl, halomethyl, or protected hydroxymethyl;  
         R 4  is selected from: 
 (i) C 1  to C 10  alkyl,  
 (ii) C 2  to C 10  alkenyl, or,  
 (iii) C 2  to C 10  alkynyl,  
 (iv) C 3 -C 8  cycloalkyl,  
 (v) aryl,  
 (vi) heteroaryl,  
 (vii) C 7 -C 14  arylalkyl,  
 (viii) heteroarylalkyl,  
 (ix) —CH 2 OH,  
 (x) —CH 2 OR 5    
 (xi) —CH 2 C(O)R 5 ,  
 (xii) —CH 2 R 6 ,  
 (xiii) —CH 2 OC(O)R 5    
 (xiv) —CH 2 OC(O)CH(R 7 )(NHR 8 ),  
 (xv) —CH 2 NR 9 R 10 ,  
 (xvi) —CH 2 CN,  
 (xvii) —CO 2 R 5    
 (xviii) —CH 2 CH 2 OH,  
 (xix) —CH 2 CH 2 OR 5    
 (xx) —CH 2 CH 2 OC(O)R 5    
 (xxi) —CH 2 CH 2 OC(O)CH(R 7 )(NHR 8 ),  
 (xxii) —CH 2 SH,  
 (xxiii) —C(O)H,  
 (xxiv) —CH 2 CO 2 R 9 ,  
 (xxv) —CH 2 SO 3 H,  
 (xxvi) —CH 2 CH 2 SO 3 H,  
 (xxvii) —CH 2 CH 2 PO 3 H 2 ,  
 (xxviii) —CH 2 CH 2 OCH 2 PO 3 H 2 ,  
 (xxix) —CH 2 OPO 3 H 2 ,  
 (xxx) —OCH 2 PO 3 H 2 ,  
 (xxxi) —OH,  
 (xxxii) —OR 10    
 (xxxiii) —NH 2 ,  
 (xxxiv) —NR 11 R 12 ,  
 (xxxv) —SH,  
 (xxxvi) —SR 5 ,  
 (xxxvii) —SCN,  
 (xxxviii) —N 3 ,  
 (xxxix) —CN,  
 (xl) —CONR 11 R 12    
 (xli) —CH 2 CONR 11 R 12    
 (xlii) —NHOH,  
 (xliii) —NHOR 5 ,  
 (xliv) —NO,  
 (xlv) —NO 2 ,  
 (xlvi) —NHNR 11 R 12    
 (xlvii) 2-halovinyl,  
 (xlviii) 3,3,3-trifluoropropenyl,  
 (xlix) C 1 -C 10  2-(alkoxycarbonyl)ethenyl,  
 (l) 2-carboxyethenyl,  
 (li) 2-cyanoethenyl,  
 (lii) difluoromethyl,  
 (liii) trifluoromethyl,  
 (liv) 2,2,2-trifluoroethyl,  
 (lv) 2-haloethyl; and  
 (lvi) —CH 2 N 3 ;  
 
         X independently is oxygen, sulfur, or a bond;  
         Z independently is hydroxy, an ester or amide;  
         R 5  is independently H, C 1 -C 10  alkyl or a protecting group;  
         R 6  is F, Cl, Br or I;  
         R 7  is the side chain of any of the unprotected or N-protected α-amino acids;  
         R 8  is H or —C(O)CH(R 7 )(NH 2 );  
         R 9  and R 10  are independently selected from H, C 1 -C 10  alkyl, carboxyalkyl, aminoalkyl, and C 2 -C 10  alkenyl, or both together form a cycle with or without participation of heteroatom; and  
         R 11  and R 12  are independently selected from H, C 1  to C 10  alkyl, C 3 -C 8  cycloalkyl, heteroaryl and C 7 -C 12  arylalkyl, or both together form a cycle with or without participation of heteroatom; and  
         salts and solvates thereof.  
       
     
     
         2 . The compound of  claim 1  wherein R 1  and R 2  are amino and X is oxygen.  
     
     
         3 . The compound of  claim 1  wherein R 1  and R 2  are simultaneously amino, R 3  is methyl, X is oxygen and the R 3  configuration is (R).  
     
     
         4 . The compound of  claim 1  wherein R 1  and R 2  are simultaneously amino, R 3  is hydroxymethyl, X is oxygen and the R 3  configuration is (R).  
     
     
         5 . The compound of  claim 1  wherein R 1  and R 2  are simultaneously amino and X is sulfur.  
     
     
         6 . The compound of  claim 1  wherein R 1  is amino, R 2  is hydroxy and X is oxygen.  
     
     
         7 . The compound of  claim 1  which is crystalline.  
     
     
         8 . The compound of  claim 1  which is a substantially pure enantiomer at the chiral carbon.  
     
     
         9 . The compound of  claim 8  which is in the (R) configuration.  
     
     
         10 . The compound of  claim 8  which is in the (S) configuration.  
     
     
         11 . A compound of the formula (Iaa):  
       
         
           
           
               
               
           
         
         wherein  
         R 1  is H, amino, or methylsulfanyl;  
         R 2  is H, methyl, halo, —N(R 5 ) 2 , hydroxy, or protected hydroxy;  
         R 3  is independently H, methyl, hydroxymethyl, halomethyl, or protected hydroxymethyl;  
         R 4  is selected from: 
 (i) C 1  to C 10  alkyl,  
 (ii) C 2  to C 10  alkenyl, or,  
 (iii) C 2  to C 10  alkynyl,  
 (iv) C 3 -C 8  cycloalkyl,  
 (v) aryl,  
 (vi) heteroaryl,  
 (vii) C 7 -C 14  arylalkyl,  
 (viii) heteroarylalkyl,  
 (ix) —CH 2 OH,  
 (x) —CH 2 OR 5    
 (xi) —CH 2 C(O)R 5 ,  
 (xii) —CH 2 R 6 ,  
 (xiii) —CH 2 OC(O)R 5    
 (xiv) —CH 2 OC(O)CH(R 7 )(NHR 8 ),  
 (xv) —CH 2 NR 9 R 10 ,  
 (xvi) —CH 2 CN,  
 (xvii) —CO 2 R 5    
 (xviii) —CH 2 CH 2 OH,  
 (xix) —CH 2 CH 2 OR 5    
 (xx) —CH 2 CH 2 OC(O)R 5    
 (xxi) —CH 2 CH 2 OC(O)CH(R 7 )(NHR 8 ),  
 (xxii) —CH 2 SH,  
 (xxiii) —C(O)H,  
 (xxiv) —CH 2 CO 2 R 9 ,  
 (xxv) —CH 2 SO 3 H,  
 (xxvi) —CH 2 CH 2 SO 3 H,  
 (xxvii) —CH 2 CH 2 PO 3 H 2 ,  
 (xxviii) —CH 2 CH 2 OCH 2 PO 3 H 2 ,  
 (xxix) —CH 2 OPO 3 H 2 ,  
 (xxx) —OCH 2 PO 3 H 2 ,  
 (xxxi) —OH,  
 (xxxii) —OR 10    
 (xxxiii) —NH 2 ,  
 (xxxiv) —NR 11 R 12 ,  
 (xxxv) —SH,  
 (xxxvi) —SR 5 ,  
 (xxxvii) —SCN,  
 (xxxviii) —N 3 ,  
 (xxxix) —CN,  
 (xl) —CONR 11 R 12    
 (xli) —CH 2 CONR 11 R 12    
 (xlii) —NHOH,  
 (xliii) —NHOR 5 ,  
 (xliv) —NO,  
 (xlv) —NO 2 ,  
 (xlvi) —NHNR 11 R 12    
 (xlvii) 2-halovinyl,  
 (xlviii) 3,3,3-trifluoropropenyl,  
 (xlix) C 1 -C 10  2-(alkoxycarbonyl)ethenyl,  
 (l) 2-carboxyethenyl,  
 (li) 2-cyanoethenyl,  
 (lii) difluoromethyl,  
 (liii) trifluoromethyl,  
 (liv) 2,2,2-trifluoroethyl,  
 (lv) 2-haloethyl; and  
 (lvi)-CH 2 N 3 ;  
 
         X independently is oxygen, sulfur, or a bond;  
         Z independently is hydroxy, an ester or amide;  
         R 5  is independently H, C 1 -C 10  alkyl or a protecting group;  
         R 6  is F, Cl, Br or I;  
         R 7  is the side chain of any of the unprotected or N-protected α-amino acids;  
         R 8  is H or —C(O)CH(R 7 )(NH 2 );  
         R 9  and R 10  are independently selected from H, C 1 -C 10  alkyl, carboxyalkyl, aminoalkyl, and C 2 -C 10  alkenyl, or both together form a cycle with or without participation of heteroatom; and  
         R 11  and R 12  are independently selected from H, C 1  to C 10  alkyl, C 3 -C 8  cycloalkyl, heteroaryl and C 7 -C 12  arylalkyl, or both together form a cycle with or without participation of heteroatom; and  
         salts and solvates thereof.  
       
     
     
         12 . The compound of  claim 11  wherein R 1  and R 2  are amino, R 3  is hydrogen and X is oxygen.  
     
     
         13 . The compound of  claim 11  wherein R 1  and R 2  are simultaneously amino, R 3  is hydrogen and X is sulfur.  
     
     
         14 . The compound of  claim 11  wherein R 1  is amino, R 2  is hydroxy, R 3  is hydrogen and X is oxygen.  
     
     
         15 . A composition comprising a pharmaceutically acceptable excipient and a compound of  claim 1 .  
     
     
         16 . A method of preparation of compounds of formula (I)  
       
         
           
           
               
               
           
         
       
       comprising reacting a compound of formula (II):  
       
         
           
           
               
               
           
         
       
       with a compound of the formula (III):  
       
         
           
           
               
               
           
         
       
       where Y is a leaving group; 
 in dipolar aprotic solvent in the presence of a base;  
 wherein * designates a chiral carbon atom;  
 R 1  is H, amino, or methylsulfanyl;  
 R 2  is H, methyl, halo, —N(R 5 ) 2 , hydroxy, protected hydroxy or a group of the formula (Ia)  
                     
 R 3  is independently methyl, hydroxymethyl, halomethyl, or protected hydroxymethyl;  
 R 4  is selected from: 
 (i) C 1  to C 10  alkyl,  
 (ii) C 2  to C 10  alkenyl, or,  
 (iii) C 2  to C 10  alkynyl,  
 (iv) C 3 -C 8  cycloalkyl,  
 (v) aryl,  
 (vi) heteroaryl,  
 (vii) C 7 -C 14  arylalkyl,  
 (viii) heteroarylalkyl,  
 (ix) —CH 2 OH,  
 (x) —CH 2 OR 5    
 (xi) —CH 2 C(O)R 5 ,  
 (xii) —CH 2 R 6 ,  
 (xiii) —CH 2 OC(O)R 5    
 (xiv) —CH 2 OC(O)CH(R 7 )(NHR 8 ),  
 (xv) —CH 2 NR 9 R 10 ,  
 (xvi) —CH 2 CN,  
 (xvii) —CO 2 R 5    
 (xviii) —CH 2 CH 2 OH,  
 (xix) —CH 2 CH 2 OR 5    
 (xx) —CH 2 CH 2 OC(O)R 5    
 (xxi) —CH 2 CH 2 OC(O)CH(R 7 )(NHR 8 ),  
 (xxii) —CH 2 SH,  
 (xxiii) —C(O)H,  
 (xxiv) —CH 2 CO 2 R 9 ,  
 (xxv) —CH 2 SO 3 H,  
 (xxvi) —CH 2 CH 2 SO 3 H,  
 (xxvii) —CH 2 CH 2 PO 3 H 2 ,  
 (xxviii) —CH 2 CH 2 OCH 2 PO 3 H 2 ,  
 (xxix) —CH 2 OPO 3 H 2 ,  
 (xxx) —OCH 2 PO 3 H 2 ,  
 (xxxi) —OH,  
 (xxxii) —OR 10    
 (xxxiii) —NH 2 ,  
 (xxxiv) —NR 11 R 12 ,  
 (xxxv) —SH,  
 (xxxvi) —SR 5 ,  
 (xxxvii) —SCN,  
 (xxxviii) —N 3 ,  
 (xxxix) —CN,  
 (xl) —CONR 11 R 12    
 (xli) —CH 2 CONR 11 R 12    
 (xlii) —NHOH,  
 (xliii) —NHOR 5 ,  
 (xliv) —NO,  
 (xlv) —NO 2 ,  
 (xlvi) —NHNR 11 R 12    
 (xlvii) 2-halovinyl,  
 (xlviii) 3,3,3-trifluoropropenyl,  
 (xlix) C 1 -C 10  2-(alkoxycarbonyl)ethenyl,  
 (l) 2-carboxyethenyl,  
 (li) 2-cyanoethenyl,  
 (lii) difluoromethyl,  
 (liii) trifluoromethyl,  
 (liv) 2,2,2-trifluoroethyl,  
 (lv) 2-haloethyl; and  
 (lvi) —CH 2 N 3 ;  
 
 X is O or S;  
 Z independently is hydroxy, an ester or amide;  
 R 5  is independently H, C 1 -C 10  alkyl or a protecting group;  
 R 6  is F, Cl, Br or I;  
 R 7  is the side chain of any of the unprotected or N-protected α-amino acids;  
 R 8  is H or —C(O)CH(R 7 )(NH 2 );  
 R 9  and R 10  are independently selected from H, C 1 -C 10  alkyl, carboxyalkyl, aminoalkyl, and C 2 -C 10  alkenyl, or both together form a cycle with or without participation of heteroatom; and  
 R 11  and R 12  are independently selected from H, C 1  to C 10  alkyl, C 3 -C 8  cycloalkyl, heteroaryl and C 7 -C 12  arylalkyl, or both together form a cycle with or without participation of heteroatom.  
 
     
     
         17 . The method of  claim 16  further comprising isolating the resulting compound of the formula (I).  
     
     
         18 . The method of  claim 16  wherein Z is ester or amide and additionally hydrolyzing one or both Z groups to produce the compound of formula (I) where at least one Z is hydroxy.  
     
     
         19 . The method of  claim 16  where Z is (OR 4 ) 2  and R 4  is isopropyl.  
     
     
         20 . The method of  claim 16  where R 3  is methyl and Y is p-toluenesulfonyloxy or bromo.  
     
     
         21 . A method of preparation of compounds of formula (Iaa)  
       
         
           
           
               
               
           
         
       
       comprising reacting a compound of formula (II):  
       
         
           
           
               
               
           
         
       
       with a compound of the formula (III):  
         Y—CH 2 CH(R 3 )—O—CH 2 P(O)(Z) 2   (III)  
       where Y is a leaving group; 
 in dipolar aprotic solvent in the presence of a base;  
 wherein  
 R 1  is H, amino, or methylsulfanyl;  
 R 2  is H, methyl, halo, —N(R 5 ) 2 , hydroxy, protected hydroxy or a group of the formula (Ia)  
                     
 R 3  is independently H, methyl, hydroxymethyl, halomethyl, or protected hydroxymethyl;  
 R 4  is selected from: 
 (i) C 1  to C 10  alkyl,  
 (ii) C 2  to C 10  alkenyl, or,  
 (iii) C 2  to C 10  alkynyl,  
 (iv) C 3 -C 8  cycloalkyl,  
 (v) aryl,  
 (vi) heteroaryl,  
 (vii) C 7 -C 14  arylalkyl,  
 (viii) heteroarylalkyl,  
 (ix) —CH 2 OH,  
 (x) —CH 2 OR 5    
 (xi) —CH 2 C(O)R 5 ,  
 (xii) —CH 2 R 6 ,  
 (xiii) —CH 2 OC(O)R 5    
 (xiv) —CH 2 OC(O)CH(R 7 )(NHR 8 ),  
 (xv) —CH 2 NR 9 R 10 ,  
 (xvi) —CH 2 CN,  
 (xvii) —CO 2 R 5    
 (xviii) —CH 2 CH 2 OH,  
 (xix) —CH 2 CH 2 OR 5    
 (xx) —CH 2 CH 2 OC(O)R 5    
 (xxi) —CH 2 CH 2 OC(O)CH(R 7 )(NHR 8 ),  
 (xxii) —CH 2 SH,  
 (xxiii) —C(O)H,  
 (xxiv) —CH 2 CO 2 R 9 ,  
 (xxv) —CH 2 SO 3 H,  
 (xxvi) —CH 2 CH 2 SO 3 H,  
 (xxvii) —CH 2 CH 2 PO 3 H 2 ,  
 (xxviii) —CH 2 CH 2 OCH 2 PO 3 H 2 ,  
 (xxix) —CH 2 OPO 3 H 2 ,  
 (xxx) —OCH 2 PO 3 H 2 ,  
 (xxxi) —OH,  
 (xxxii) —OR 10    
 (xxxiii) —NH 2 ,  
 (xxxiv) —NR 11 R 12 ,  
 (xxxv) —SH,  
 (xxxvi) —SR 5 ,  
 (xxxvii) —SCN,  
 (xxxviii) —N 3 ,  
 (xxxix) —CN,  
 (xl) —CONR 11 R 12    
 (xli) —CH 2 CONR 11 R 12    
 (xlii) —NHOH,  
 (xliii) —NHOR 5 ,  
 (xliv) —NO,  
 (xlv) —NO 2 ,  
 (xlvi) —NHNR 11 R 12    
 (xlvii) 2-halovinyl,  
 (xlviii) 3,3,3-trifluoropropenyl,  
 (xlix) C 1 -C 10  2-(alkoxycarbonyl)ethenyl,  
 (l) 2-carboxyethenyl,  
 (li) 2-cyanoethenyl,  
 (lii) difluoromethyl,  
 (liii) trifluoromethyl,  
 (liv) 2,2,2-trifluoroethyl,  
 (lv) 2-haloethyl; and  
 (lvi) —CH 2 N 3 ;  
 
 X is O or S;  
 Z independently is hydroxy, an ester or amide;  
 R 5  is independently H, C 1 -C 10  alkyl or a protecting group;  
 R 6  is F, Cl, Br or I;  
 R 7  is the side chain of any of the unprotected or N-protected α-amino acids;  
 R 8  is H or —C(O)CH(R 7 )(NH 2 );  
 R 9  and R 10  are independently selected from H, C 1 -C 10  alkyl, carboxyalkyl, aminoalkyl, and C 2 -C 10  alkenyl, or both together form a cycle with or without participation of heteroatom; and  
 R 11  and R 12  are independently selected from H, C 1  to C 10  alkyl, C 3 -C 8  cycloalkyl, heteroaryl and C 7 -C 12  arylalkyl, or both together form a cycle with or without participation of heteroatom.  
 
     
     
         22 . A method for the preparation of compounds of formula (I):  
       
         
           
           
               
               
           
         
         where R 2  of formula (I) is —N(R 5 ) 2 ;  
         comprising reacting a compound (IV)  
         
           
             
             
                 
                 
             
           
         
         with an amine HN(R 5 ) 2 ;  
         wherein:  
         * designates a chiral carbon atom;  
         R 1  is H, amino or methylsulfanyl;  
         R 3  is independently methyl, hydroxymethyl, halomethyl or protected hydroxymethyl;  
         R 4  is selected from: 
 (i) C 1  to C 10  alkyl,  
 (ii) C 2  to C 10  alkenyl, or,  
 (iii) C 2  to C 10  alkynyl,  
 (iv) C 3 -C 8  cycloalkyl,  
 (v) aryl,  
 (vi) heteroaryl,  
 (vii) C 7 -C 14  arylalkyl,  
 (viii) heteroarylalkyl,  
 (ix) —CH 2 OH,  
 (x) —CH 2 OR 5    
 (xi) —CH 2 C(O)R 5 ,  
 (xii) —CH 2 R 6 ,  
 (xiii) —CH 2 OC(O)R 5    
 (xiv) —CH 2 OC(O)CH(R 7 )(NHR 8 ),  
 (xv) —CH 2 NR 9 R 10 ,  
 (xvi) —CH 2 CN,  
 (xvii) —CO 2 R 5    
 (xviii) —CH 2 CH 2 OH,  
 (xix) —CH 2 CH 2 OR 5    
 (xx) —CH 2 CH 2 OC(O)R 5    
 (xxi) —CH 2 CH 2 OC(O)CH(R 7 )(NHR 8 ),  
 (xxii) —CH 2 SH,  
 (xxiii) —C(O)H,  
 (xxiv)—CH 2 CO 2 R 9 ,  
 (xxv) —CH 2 SO 3 H,  
 (xxvi) —CH 2 CH 2 SO 3 H,  
 (xxvii) —CH 2 CH 2 PO 3 H 2 ,  
 (xxviii) —CH 2 CH 2 OCH 2 PO 3 H 2 ,  
 (xxix) —CH 2 OPO 3 H 2 ,  
 (xxx) —OCH 2 PO 3 H 2 ,  
 (xxxi) —OH,  
 (xxxii) —OR 10    
 (xxxiii) —NH 2 ,  
 (xxxiv) —NR 11 R 12 ,  
 (xxxv) —SH,  
 (xxxvi) —SR 5 ,  
 (xxxvii) —SCN,  
 (xxxviii) —N 3 ,  
 (xxxix) —CN,  
 (xl) —CONR 11 R 12    
 (xli) —CH 2 CONR 11 R 12    
 (xlii) —NHOH,  
 (xliii) —NHOR 5 ,  
 (xliv) —NO,  
 (xlv)—NO 2 ,  
 (xlvi) —NHNR 11 R 12    
 (xlvii) 2-halovinyl,  
 (xlviii) 3,3,3-trifluoropropenyl,  
 (xlix) C 1 -C 10  2-(alkoxycarbonyl)ethenyl,  
 (l) 2-carboxyethenyl,  
 (li) 2-cyanoethenyl,  
 (lii) difluoromethyl,  
 (liii) trifluoromethyl,  
 (liv) 2,2,2-trifluoroethyl,  
 (lv) 2-haloethyl; and  
 (lvi) —CH 2 N 3 ;  
 
         X is O or S;  
         Z independently is hydroxy, an ester or amide; and  
         R 5  is independently H, C 1 -C 8  alkyl or a protecting group.  
       
     
     
         23 . The method of  claim 22  further comprising hydrolyzing one or both Z groups to produce the compound of formula (I) where one or both of Z are hydroxyl.  
     
     
         24 . A method for the preparation of compounds of formula (Iaa):  
       
         
           
           
               
               
           
         
         where R 2  of formula (I) is —N(R 5 ) 2 ;  
         comprising reacting a compound (IV)  
         
           
             
             
                 
                 
             
           
         
         with an amine HN(R 5 ) 2 ;  
         wherein:  
         R 1  is H, amino or methylsulfanyl;  
         R 3  is independently H, methyl, hydroxymethyl, halomethyl or protected hydroxymethyl;  
         R 4  is selected from: 
 (i) C 1  to C 10  alkyl,  
 (ii) C 2  to C 10  alkenyl, or,  
 (iii) C 2  to C 10  alkynyl,  
 (iv) C 3 -C 8  cycloalkyl,  
 (v) aryl,  
 (vi) heteroaryl,  
 (vii) C 7 -C 14  arylalkyl,  
 (viii) heteroarylalkyl,  
 (ix) —CH 2 OH,  
 (x) —CH 2 OR 5    
 (xi) —CH 2 C(O)R 5 ,  
 (xii) —CH 2 R 6 ,  
 (xiii) —CH 2 OC(O)R 5    
 (xiv) —CH 2 OC(O)CH(R 7 )(NHR 8 ),  
 (xv) —CH 2 NR 9 R 10 ,  
 (xvi) —CH 2 CN,  
 (xvii) —CO 2 R 5    
 (xviii) —CH 2 CH 2 OH,  
 (xix) —CH 2 CH 2 OR 5    
 (xx) —CH 2 CH 2 OC(O)R 5    
 (xxi) —CH 2 CH 2 OC(O)CH(R 7 )(NHR 8 ),  
 (xxii) —CH 2 SH,  
 (xxiii) —C(O)H,  
 (xxiv) —CH 2 CO 2 R 9 ,  
 (xxv) —CH 2 SO 3 H,  
 (xxvi) —CH 2 CH 2 SO 3 H,  
 (xxvii) —CH 2 CH 2 PO 3 H 2 ,  
 (xxviii) —CH 2 CH 2 OCH 2 PO 3 H 2 ,  
 (xxix) —CH 2 OPO 3 H 2 ,  
 (xxx) —OCH 2 PO 3 H 2 ,  
 (xxxi) —OH,  
 (xxxii) —OR 10    
 (xxxiii) —NH 2 ,  
 (xxxiv) —NR 11 R 12 ,  
 (xxxv) —SH,  
 (xxxvi) —SR 5 ,  
 (xxxvii) —SCN,  
 (xxxviii) —N 3 ,  
 (xxxix) —CN,  
 (xl) —CONR 11 R 12    
 (xli) —CH 2 CONR 11 R 12    
 (xlii) —NHOH,  
 (xliii) —NHOR 5 ,  
 (xliv) —NO,  
 (xlv) —NO 2 ,  
 (xlvi) —NHNR 11 R 12    
 (xlvii) 2-halovinyl,  
 (xlviii) 3,3,3-trifluoropropenyl,  
 (xlix) C 1 -C 10  2-(alkoxycarbonyl)ethenyl,  
 (l) 2-carboxyethenyl,  
 (li) 2-cyanoethenyl,  
 (lii) difluoromethyl,  
 (liii) trifluoromethyl,  
 (liv) 2,2,2-trifluoroethyl,  
 (lv) 2-haloethyl; and  
 (lvi) —CH 2 N 3 ;  
 
         X is O or S;  
         Z independently is hydroxy, an ester or amide; and  
         R 5  is independently H, C 1 -C 8  alkyl or a protecting group.  
       
     
     
         25 . A method for preparation of compounds of formula (V):  
       
         
           
           
               
               
           
         
       
       where 
 R 3  is methyl, hydroxymethyl, halomethyl or protected hydroxymethyl;  
 R 4  is selected from: 
 (i) C 1  to C 10  alkyl,  
 (ii) C 2  to C 10  alkenyl, or,  
 (iii) C 2  to C 10  alkynyl,  
 (iv) C 3 -C 8  cycloalkyl,  
 (v) aryl,  
 (vi) heteroaryl,  
 (vii) C 7 -C 14  arylalkyl,  
 (viii) heteroarylalkyl,  
 (ix) —CH 2 OH,  
 (x) —CH 2 OR 5    
 (xi) —CH 2 C(O)R 5 ,  
 (xii) —CH 2 R 6 ,  
 (xiii) —CH 2 OC(O)R 5    
 (xiv) —CH 2 OC(O)CH(R 7 )(NHR 8 ),  
 (xv) —CH 2 NR 9 R 10 ,  
 (xvi) —CH 2 CN,  
 (xvii) —CO 2 R 5    
 (xviii) —CH 2 CH 2 OH,  
 (xix) —CH 2 CH 2 OR 5    
 (xx) —CH 2 CH 2 OC(O)R 5    
 (xxi) —CH 2 CH 2 OC(O)CH(R 7 )(NHR 8 ),  
 (xxii) —CH 2 SH,  
 (xxiii) —C(O)H,  
 (xxiv) —CH 2 CO 2 R 9 ,  
 (xxv) —CH 2 SO 3 H,  
 (xxvi) —CH 2 CH 2 SO 3 H,  
 (xxvii) —CH 2 CH 2 PO 3 H 2 ,  
 (xxviii) —CH 2 CH 2 OCH 2 PO 3 H 2 ,  
 (xxix) —CH 2 OPO 3 H 2 ,  
 (xxx) —OCH 2 PO 3 H 2 ,  
 (xxxi) —OH,  
 (xxxii) —OR 10    
 (xxxiii) —NH 2 ,  
 (xxxiv) —NR 11 R 12 ,  
 (xxxv) —SH,  
 (xxxvi) —SR 5 ,  
 (xxxvii) —SCN,  
 (xxxviii) —N 3 ,  
 (xxxix) —CN,  
 (xl) —CONR 11 R 12    
 (xli) —CH 2 CONR 11 R 12    
 (xlii) —NHOH,  
 (xliii) —NHOR 5 ,  
 (xliv) —NO,  
 (xlv) —NO 2 ,  
 (xlvi) —NHNR 11 R 12    
 (xlvii) 2-halovinyl,  
 (xlviii) 3,3,3-trifluoropropenyl,  
 (xlix) C 1 -C 10  2-(alkoxycarbonyl)ethenyl,  
 (l) 2-carboxyethenyl,  
 (li) 2-cyanoethenyl,  
 (lii) difluoromethyl,  
 (liii) trifluoromethyl,  
 (liv) 2,2,2-trifluoroethyl,  
 (lv) 2-haloethyl; and  
 (lvi) —CH 2 N 3 ;  
 
 R 5  independently is H, C 1 -C 8  alkyl or a protecting group;  
 X is O or S;  
 Z independently is hydroxy, an ester or amide; and  
 * designates a chiral carbon atom;  
 comprising reacting compound (IVa)  
                     
 with N(R 5 ) 2  in anhydrous solvent, alkali hydroxide or alkali carbonate in aqueous solution.  
 
     
     
         26 . A method for preparation of compounds of formula (V):  
       
         
           
           
               
               
           
         
       
       where 
 R 3  is H, methyl, hydroxymethyl, halomethyl or protected hydroxymethyl;  
 R 4  is selected from: 
 (i) C 1  to C 10  alkyl,  
 (ii) C 2  to C 10  alkenyl, or,  
 (iii) C 2  to C 10  alkynyl,  
 (iv) C 3 -C 8  cycloalkyl,  
 (v) aryl,  
 (vi) heteroaryl,  
 (vii) C 7 -C 14  arylalkyl,  
 (viii) heteroarylalkyl,  
 (ix) —CH 2 OH,  
 (x) —CH 2 OR 5    
 (xi) —CH 2 C(O)R 5 ,  
 (xii) —CH 2 R 6 ,  
 (xiii) —CH 2 OC(O)R 5    
 (xiv) —CH 2 OC(O)CH(R 7 )(NHR 8 ),  
 (xv) —CH 2 NR 9 R 10 ,  
 (xvi) —CH 2 CN,  
 (xvii) —CO 2 R 5    
 (xviii) —CH 2 CH 2 OH,  
 (xix) —CH 2 CH 2 OR 5    
 (xx) —CH 2 CH 2 OC(O)R 5    
 (xxi) —CH 2 CH 2 OC(O)CH(R 7 )(NHR 8 ),  
 (xxii) —CH 2 SH,  
 (xxiii) —C(O)H,  
 (xxiv) —CH 2 CO 2 R 9 ,  
 (xxv) —CH 2 SO 3 H,  
 (xxvi) —CH 2 CH 2 SO 3 H,  
 (xxvii) —CH 2 CH 2 PO 3 H 2 ,  
 (xxviii) —CH 2 CH 2 OCH 2 PO 3 H 2 ,  
 (xxix) —CH 2 OPO 3 H 2 ,  
 (xxx) —OCH 2 PO 3 H 2 ,  
 (xxxi) —OH,  
 (xxxii) —OR 10    
 (xxxiii) —NH 2 ,  
 (xxxiv) —NR 11 R 12 ,  
 (xxxv) —SH,  
 (xxxvi) —SR 5 ,  
 (xxxvii) —SCN,  
 (xxxviii) —N 3 ,  
 (xxxix) —CN,  
 (xl) —CONR 11 R 12    
 (xli) —CH 2 CONR 11 R 12    
 (xlii) —NHOH,  
 (xliii) —NHOR 5 ,  
 (xliv) —NO,  
 (xlv) —NO 2 ,  
 (xlvi) —NHNR 11 R 12    
 (xlvii) 2-halovinyl,  
 (xlviii) 3,3,3-trifluoropropenyl,  
 (xlix) C 1 -C 10  2-(alkoxycarbonyl)ethenyl,  
 (l) 2-carboxyethenyl,  
 (li) 2-cyanoethenyl,  
 (lii) difluoromethyl,  
 (liii) trifluoromethyl,  
 (liv) 2,2,2-trifluoroethyl,  
 (lv) 2-haloethyl; and  
 (lvi) —CH 2 N 3 ;  
 
 R 5  independently is H, C 1 -C 8  alkyl or a protecting group;  
 X is O or S; and  
 Z independently is hydroxy, an ester or amide;  
 comprising reacting compound (IVa)  
                     
 with N(R 5 ) 2  in anhydrous solvent, alkali hydroxide or alkali carbonate in aqueous solution.  
 
     
     
         27 . A method of preparation of the compounds of formula (VI)  
       
         
           
           
               
               
           
         
       
       comprising reacting a compound of formula (VII)  
       
         
           
           
               
               
           
         
       
       with a compound of the formula (VIII)  
       
         
           
           
               
               
           
         
       
       in the presence of a base;  
       where 
 * designates a chiral carbon atom;  
 R 1  is H, amino or methylsulfanyl;  
 R 3  is methyl, hydroxymethyl, halomethyl or protected hydroxymethyl;  
 R 4  is alkyl, alkenyl, alkynyl, arylalkyl, cycloalkyl, formyl (—CHO), azido (—N 3 ), amino (—NH 2 ), alkylamino (—NR 2 ), hydroxyl (—OH), alkoxy (—OR), cyano (—CN), carboxyl (—COOH), amido (—NRC(O)R, or alkoxycarbonylalkyl; and  
 Z independently is hydroxy, an ester or amide.  
 
     
     
         28 . The method of  claim 27  further comprising hydrolyzing Z group to produce a compound of formula (VI) where 1 or 2 Z groups are hydroxy.  
     
     
         29 . A method of preparation of the compounds of formula (VI)  
       
         
           
           
               
               
           
         
       
       comprising reacting a compound of formula (VII)  
       
         
           
           
               
               
           
         
       
       with a compound of the formula (VIII)  
         HOCH 2 CH 2 (R 3 )OCH 2 P(O)(Z) 2   (VIII)  
       in the presence of a base;  
       where 
 R 1  is H, amino or methylsulfanyl;  
 R 3  is H, methyl, hydroxymethyl, halomethyl or protected hydroxymethyl;  
 R 4  is alkyl, alkenyl, alkynyl, arylalkyl, cycloalkyl, formyl (—CHO), azido (—N 3 ), amino (—NH 2 ), alkylamino (—NR 2 ), hydroxyl (—OH), alkoxy (—OR), cyano (—CN), carboxyl (—COOH), amido (—NRC(O)R, or alkoxycarbonylalkyl; and  
 Z independently is hydroxy, an ester or amide.  
 
     
     
         30 . A method of preparation of compounds of formula (XIII)  
       
         
           
           
               
               
           
         
       
       comprising (a) reacting a compound of the formula (IX)  
       
         
           
           
               
               
           
         
       
       with a compound of the formula (X)  
       
         
           
           
               
               
           
         
       
       in the presence of a base without solvent or in the presence of an aprotic solvent, to produce a compound of formula (XI)  
       
         
           
           
               
               
           
         
         and (b) reacting compound (XI) with a compound of the formula (XII)  
           Y—CH 2 P(O)(OZ) 2   (XII)  
         in the presence of a base in dimethylformamide or tetrahydrofuran to produce a compound of formula (XIII);  
         where  
         * is a chiral carbon atom;  
         R 1  is H, amino or methylsulfanyl;  
         R 2  is H, chloro, hydroxy or amino;  
         R 3  is methyl, hydroxymethyl, halomethyl or protected hydroxymethyl;  
         R 4  is alkyl, alkenyl, alkynyl, arylalkyl, cycloalkyl, formyl (—CHO), azido (—N3), amino (—NH2), alkylamino (—NR 2 ), hydroxyl (—OH), alkoxy (—OR), cyano (—CN), carboxyl (—COOH), amido (—NRC(O)R, or alkoxycarbonylalkyl;  
         R 6  is hydroxy or protected hydroxy; or R 3  and R 6  are joined by a cyclic acetal or ketal protecting group;  
         Y is a leaving group; and  
         Z is hydroxy, amide or an ester.  
       
     
     
         31 . The method of  claim 30  further comprising hydrolyzing Z group to produce a compound of formula (XIII) where 1 or 2 Z groups are hydroxyl.  
     
     
         32 . A method of preparation of compounds of formula (XIII)  
       
         
           
           
               
               
           
         
       
       comprising (a) reacting a compound of the formula (IX)  
       
         
           
           
               
               
           
         
       
       with a compound of the formula (X)  
       
         
           
           
               
               
           
         
       
       in the presence of a base without solvent or in the presence of an aprotic solvent, to produce a compound of formula (XI)  
       
         
           
           
               
               
           
         
         and (b) reacting compound (XI) with a compound of the formula (XII)  
           Y—CH 2 P(O)(OZ) 2   (XII)  
         in the presence of a base in dimethylformamide or tetrahydrofuran to produce a compound of formula (XIII);  
         where  
         R 1  is H, amino or methylsulfanyl;  
         R 2  is H, chloro, hydroxy or amino;  
         R 3  is H, methyl, hydroxymethyl, halomethyl or protected hydroxymethyl;  
         R 4  is alkyl, alkenyl, alkynyl, arylalkyl, cycloalkyl, formyl (—CHO), azido (—N3), amino (—NH2), alkylamino (—NR 2 ), hydroxyl (—OH), alkoxy (—OR), cyano (—CN), carboxyl (—COOH), amido (—NRC(O)R, or alkoxycarbonylalkyl;  
         R 6  is hydroxy or protected hydroxy; or R 3  and R 6  are joined by a cyclic acetal or ketal protecting group;  
         Y is a leaving group; and  
         Z is hydroxy, amide or an ester.  
       
     
     
         33 . A method for the treatment of a viral infection comprising administering a therapeutically effective amount of a compound of  claim 1  to a patient in need of such treatment.  
     
     
         34 . The method of  claim 33  where the virus is a DNA virus.  
     
     
         35 . The method of  claim 34  where the virus is a retrovirus or hepadnavirus.

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