Treprostinil derivative compounds and methods of using same

1. A compound represented by Formula (I):

wherein:

R 20 , R 21 , R 22 , R 23 , R 24 , R 25 , R 26 , R 27 , R 28 , R 29 , R 30 , R 31 , R 32 , R 33 , R 34 , R 35 and R 36 are independently H or deuterium;

Z is —OH, —OR 11 , —N(R 11 )R 12 , —SR 11 or P 1 ;

R 11 is alkyl, substituted alkyl, cycloalkyl, substituted cycloalkyl, haloalkyl, heteroalkyl, substituted heteroalkyl, cycloheteroalkyl, substituted cycloheteroalkyl, alkylcycloalkyl, substituted alkylcycloalkyl, alkylcycloheteroalkyl, substituted alkylcycloheteroalkyl, aryl, substituted aryl, alkylaryl, substituted alkylaryl, heteroaryl, substituted heteroaryl, alkylheteroaryl, or substituted alkylheteroaryl;

R 12 is H, haloalkyl, heteroalkyl, cycloheteroalkyl, alkylcycloalkyl, alkylcycloheteroalkyl, aryl, or heteroaryl;

P 1 is selected from the group consisting of:

wherein:

m is 1, 2, 3 or 4;

R 14 and R 15 are independently in each occurrence selected from the group consisting of H, alkyl, cycloalkyl, alkylcycloalkyl, haloalkyl, heteroalkyl, substituted alkyl, aryl, heteroaryl, arylalkyl, heteroarylalkyl, substituted aryl, substituted heteroaryl, substituted arylalkyl, and substituted heteroarylalkyl; or

R 14 and R 15 taken together with the atoms to which they are attached optionally form a 5- to 7-membered ring incorporating two ring heteroatoms chosen from N, O and S, which is unsubstituted or substituted with 1, 2 or 3 substituents independently selected from the group consisting of halo, methyl and methoxy;

R 18 and R 19 are independently in each occurrence hydrogen or alkyl, wherein the alkyl is unsubstituted or substituted with 1 substituent selected from the group consisting of halo, hydroxy, alkoxy, amino, thio, methylthio, —C(O)OH, —C(O)O-(alkyl), —CONH 2 , aryl and heteroaryl, wherein the aryl or heteroaryl is unsubstituted or substituted with a substituent selected from the group consisting of alkyl, halo, haloalkyl, hydroxy, alkoxy, and haloalkoxy;

R 14 and R 18 taken together with the atoms to which they are attached optionally form a 5- to 7-membered ring;

R 14 and R 19 taken together with the atoms to which they are attached optionally form a 5- to 7-membered ring;

R 15 and R 18 taken together with the atoms to which they are attached optionally form a 5- to 7-membered ring; and

R 15 and R 19 taken together with the atoms to which they are attached optionally form a 5- to 7-membered ring; and

R 1 and R 2 are independently H or P 2 , wherein at least one of R 1 and R 2 is P 2 and P 2 is —C(═O)R 14 , wherein R 14 is alkyl or substituted alkyl;

with the proviso that:

the alkyl for R 14 with respect to P 2 is not methyl;

the substituted alkyl for R 14 with respect to P 2 is not an alkyl group substituted with a substituted alkoxy group; and

P 2 is not

 wherein:

m is 1 or 2;

R 14 and R 15 are independently in each occurrence H or alkyl;

R 18 and R 19 are independently in each occurrence H or alkyl, wherein the alkyl is unsubstituted or substituted with 1 substituent selected from the group consisting of hydroxy, amino, thio, methylthio, —C(O)OH, —C(O)NH 2 , aryl, and heteroaryl, wherein the aryl or heteroaryl is unsubstituted or substituted with hydroxy; and

R 14 and R 18 or R 19 taken together with the atoms to which they are attached optionally form a 5-membered ring;

or an enantiomer, a pharmaceutically acceptable salt or a polymorph thereof.

2. The compound of claim 1 , wherein R 1 is P 2 and R 2 is H.

3. The compound of claim 1 , wherein R 1 is H and R 2 is P 2 .

4. The compound of claim 1 , wherein R 1 is P 2 and R 2 is P 2 .

5. The compound of claim 1 , wherein each of R 20 to R 36 is H.

6. The compound of claim 1 , wherein at least one of R 20 to R 36 is deuterium.

7. The compound of claim 1 , wherein Z is —OR 11 .

8. The compound of claim 1 , wherein Z is P 1 .

9. The compound of claim 1 , wherein Z is —N(R 11 )R 12 .

10. The compound of claim 1 , wherein Z is —OH.

11. The compound of claim 1 , which is represented by Formula (IA):

wherein:

Z is —OH, —OR 11 or P 1 ;

R 11 is alkyl, substituted alkyl, cycloalkyl, substituted cycloalkyl, haloalkyl, heteroalkyl, substituted heteroalkyl, cycloheteroalkyl, substituted cycloheteroalkyl, alkylcycloalkyl, substituted alkylcycloalkyl, alkylcycloheteroalkyl, or substituted alkylcycloheteroalkyl;

P 1 is selected from the group consisting of:

wherein:

m is 1, 2, 3 or 4;

R 14 and R 15 are independently selected from the group consisting of H, alkyl, cycloalkyl, alkylcycloalkyl, haloalkyl, aryl, heteroaryl, arylalkyl, heteroarylalkyl, substituted aryl, substituted heteroaryl, substituted arylalkyl, and substituted heteroarylalkyl; or

R 14 and R 15 taken together with the atoms to which they are attached optionally form a 5- to 7- membered ring; and

R 1 and R 2 are independently H or P 2 , wherein at least one of R 1 and R 2 is P 2 and P 2 is —C(═O)R 14 , wherein R 14 is alkyl other than methyl;

or an enantiomer, a pharmaceutically acceptable salt or a polymorph thereof.

12. A composition comprising a compound of claim 1 or a pharmaceutically acceptable salt thereof and one or more pharmaceutically acceptable excipients.

13. The composition of claim 12 , which is formulated for transdermal delivery.

14. The composition of claim 13 , which is formulated for transdermal delivery with a patch.

15. The composition of claim 12 , further comprising at least one solvent.

16. A method of treating pulmonary hypertension, comprising administering to a subject in need of treatment a therapeutically effective amount of a compound of claim 1 or a pharmaceutically acceptable salt thereof.

17. The method of claim 16 , wherein the pulmonary hypertension is pulmonary arterial hypertension.

18. The method of claim 16 , wherein the compound is administered transdermally.

19. The method of claim 18 , wherein the compound is administered via a transdermal patch.