Nucleotides and nucleosides and methods for their use in DNA sequencing

1. A compound of formula:

wherein:

Z is —O—, —S—, —NH—, —OC(O)O—, —NHC(O)O—, —OC(O)NH— or —NHC(O)NH—;

R 1 is hydroxy, monophosphate, diphosphate, triphosphate or polyphosphate;

R 2 is hydrogen or hydroxy;

R 3 and R 4 are each independently:

hydrogen, hydroxy, halo or amino; or

alkyl (C≦12) , alkenyl (C≦12) , alkynyl (C≦12) , aryl (C≦12) , aralkyl (C≦12) , hetero-aryl (C≦12) , heteroaralkyl (C≦12) , alkoxy (C≦12) , aryloxy (C≦12) , aralkoxy (C≦12) , heteroaryloxy (C≦12) , heteroaralkoxy (C≦12) , alkyl-amino (C≦12) , dialkylamino (C≦12) , arylamino (C≦12) , aralkylamino (C≦12) , or a substituted version of any of these groups;

R 5 , R 6 , R 7 and R 8 are each independently:

hydrogen, hydroxy, halo, amino, nitro, cyano or mercapto; or

alkyl (C≦12) , alkenyl (C≦12) , alkynyl (C≦12) , aryl (C≦12) , aralkyl (C≦12) , hetero-aryl (C≦12) , heteroaralkyl (C≦12) , acyl (C≦12) , alkoxy (C≦12) , alkenyl-oxy (C≦12) , alkynyloxy (C≦12) , aryloxy (C≦12) , aralkoxy (C≦12) , hetero-aryloxy (C≦12) , heteroaralkoxy (C≦12) , acyloxy (C≦12) , alkylamino (C≦12) , dialkylamino (C≦12) , alkoxyamino (C≦12) , alkenylamino (C≦12) , alkynyl-amino (C≦12) , arylamino (C≦12) , aralkylamino (C≦12) , heteroaryl-amino (C≦12) , heteroaralkylamino (C≦12) , alkylsulfonylamino (C≦12) , amido (C≦12) , alkylthio (C≦12) , alkenylthio (C≦12) , alkynylthio (C≦12) , aryl-thio (C≦12) , aralkylthio (C≦12) , heteroarylthio (C≦12) , heteroaralkyl-thio (C≦12) , acylthio (C≦12) , thioacyl (C≦12) , alkylsulfonyl (C≦12) , aryl-sulfonyl (C≦12) , alkylammonium (C≦12) , alkylsulfonium (C≦12) , alkyl-silyl (C≦12) , or a substituted version of any of these groups; or

a group of formula:

wherein

X is

 —O—, —S—, or —NH—; or

 alkanediyl (C≦12) , alkenediyl (C≦12) , alkynediyl (C≦12) , arenediyl (C≦12) , heteroarenediyl (C≦12) , or a substituted version of any of these groups;

Y is —O—, —NH—, alkanediyl (C≦12) or substituted alkanediyl (C≦12) ;

n is an integer from 0-12; and

m is an integer from 0-12; or

a-linker-reporter; and

R 9 is alkyl (C≦12) , aryl (C≦12) or a substituted version of either of these groups;

or a salt, esters, hydrates, solvates, tautomers, prodrugs, or optical isomers thereof.

2. The compound of claim 1 , further defined as a compound of formula C.

3. The compound of claim 1 , further defined as a compound of formula D.

4. The compound of claim 1 , wherein Z is —O—.

5. The compound of claim 1 , wherein R 1 is a triphosphate.

6. The compound of claim 1 , wherein R 2 is hydrogen.

7. The compound of claim 1 , wherein R 3 is alkyl (C≦8) .

8. The compound of claim 7 , wherein R 3 is selected from the group consisting of methyl, ethyl, n-propyl, isopropyl and tert-butyl.

9. The compound claim 1 , wherein R 4 is hydrogen.

10. The compound claim 1 , wherein R 5 is hydrogen.

11. The compound of claim 1 , wherein R 6 is a-linker-reporter.

12. The compound of claim 11 , wherein the linker is:

wherein

X is

—O—, —S—, or —NH—; or

alkanediyl (C≦12) , alkenediyl (C≦12) , alkynediyl (C≦12) , arenediyl (C≦12) , heteroarenediyl (C≦12) , or a substituted version of any of these groups; and

n is an integer from 0-12.

13. The compound of claim 12 , wherein X is —C≡C—.

14. The compound claim 12 , wherein n is zero.

15. The compound of claim 11 , wherein the reporter is based on a dye, wherein the dye is zanthene, fluorescein, rhodamine, BODIPY, cyanine, coumarin, pyrene, phthalocyanine, phycobiliprotein, ALEXA FLUOR® 350, ALEXA FLUOR® 405, ALEXA FLUOR® 430, ALEXA FLUOR® 488, ALEXA FLUOR® 514, ALEXA FLUOR® 532, ALEXA FLUOR® 546, ALEXA FLUOR® 555, ALEXA FLUOR® 568, ALEXA FLUOR® 568, ALEXA FLUOR® 594, ALEXA FLUOR® 610, ALEXA FLUOR® 633, ALEXA FLUOR® 647, ALEXA FLUOR® 660, ALEXA FLUOR® 680, ALEXA FLUOR® 700, ALEXA FLUOR® 750, or a squaraine dye.

16. The compound of claim 11 , wherein the reporter is:

17. The compound of claim 1 , wherein R 6 is hydrogen.

18. The compound of claim 1 , wherein R 7 is hydrogen.

19. The compound of claim 1 , wherein R 8 is hydrogen.

20. The compound of claim 1 , wherein R 8 is nitro.

21. The compound of claim 1 , wherein R 8 is alkyl (C≦12) or a substituted version thereof.

22. The compound of claim 21 , wherein R 8 is alkyl (C≦8) .

23. The compound of claim 22 , wherein R 8 is methyl.

24. The compound of claim 1 , wherein R 9 is alkyl (C≦8) .

25. The compound of claim 24 , wherein R 9 is methyl.

26. The compound of claim 24 , wherein R 9 is tert-butyl.

27. The compound of claim 1 , wherein R 9 is aryl (C≦8) .

28. The compound of claim 27 , wherein R 9 is phenyl.

29. The compound of claim 1 , further defined as:

or a salt thereof.

30. The compound of claim 1 , further defined as:

or a salt thereof.

31. The compound of claim 1 , further defined as:

or a salt thereof.

32. The compound of claim 1 , further defined as:

or a salt thereof.

33. A method of sequencing a target nucleic acid comprising the following steps:

(i) attaching the 5′-end of a primer to a solid surface;

(ii) hybridizing a target nucleic acid to the primer attached to the solid surface;

(iii) adding a compound claim 11 , with the proviso that where more than one type of base is present, each base is attached to a different reporter group;

(iv) adding a nucleic acid replicating enzyme to the hybridized primer/target nucleic acid complex to incorporate the composition of step (iii) into the growing primer strand, wherein the incorporated composition of step (iii) terminates the polymerase reaction at an efficiency of between about 70% to about 100%;

(v) washing the solid surface to remove unincorporated components;

(vi) detecting the incorporated reporter group to identify the incorporated composition of step (iii);

(vii) a cleavage step to remove the terminating moiety resulting in an extended primer with naturally-occurring bases;

(viii) washing the solid surface to remove the cleaved terminating group; and

(ix) repeating steps (iii) through (viii) one or more times to identify the plurality of bases in the target nucleic acid.

34. A method of sequencing a target nucleic acid comprising the following steps:

(i) attaching the 5′-end of a target nucleic acid to a solid surface;

(ii) hybridizing a primer to the target nucleic acid attached to the solid surface;

(iii) adding a compound claim 11 , with the proviso that where more than one type of base is present, each base is attached to a different reporter group;

(iv) adding a nucleic acid replicating enzyme to the hybridized primer/target nucleic acid complex to incorporate the composition of step (iii) into the growing primer strand, wherein the incorporated composition of step (iii) terminates the polymerase reaction at an efficiency of between about 70% to about 100%;

(v) washing the solid surface to remove unincorporated components;

(vi) detecting the incorporated reporter group to identify the incorporated composition of step (iii);

(vii) optionally adding one or more chemical compounds to permanently cap unextended primers;

(viii) a cleavage step to remove the terminating moiety resulting in an extended primer with naturally-occurring bases;

(ix) washing the solid surface to remove the cleaved terminating group; and

(x) repeating steps (iii) through (ix) one or more times to identify the plurality of bases in the target nucleic acid.

35. A method of performing Sanger or Sanger-type sequencing using a compound claim 11 .

36. A method of performing pyrosequencing or pyrosequencing-type sequencing using a compound claim 11 .