Treprostinil derivative compounds and methods of using same

1. A compound represented by Formula III:

wherein:

L 2 is selected from the group consisting of:

wherein:

m is 1, 2, 3, or 4;

X is NR 14 or O;

R 14 is 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; and

R 16 and R 17 are independently H or alkyl, or R 16 and R 17 taken together with the atom to which they are attached optionally form a 3- to 6-membered ring;

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 , wherein:

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; and

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 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;

or an enantiomer or pharmaceutically acceptable salt thereof.

2. The compound of claim 1 , wherein L 2 is selected from the group consisting of:

3. The compound of claim 1 , 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 H.

4. The compound of claim 1 , wherein at least one of 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 is deuterium.

5. A compound having Formula II(AA):

wherein,

R 011 is haloalkyl, heteroalkyl, cycloheteroalkyl, alkylcycloalkyl, alkylcycloheteroalkyl, aryl, or heteroaryl;

R 03 , R 04 , R 05 , R 06 , R 07 and R 08 are independently H or deuterium;

X is O, NR 012 , or S, wherein R 012 is haloalkyl, heteroalkyl, cycloheteroalkyl, alkylcycloalkyl, alkylcycloheteroalkyl, aryl, or heteroaryl; and

Y is C═O,

or an enantiomer or pharmaceutically acceptable salt thereof.

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

7. The composition of claim 6 , which is formulated for transdermal delivery.

8. The composition of claim 6 , which is formulated for transdermal delivery with a patch.

9. 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.

10. The method of claim 9 , wherein the compound is administered orally, topically or parenterally.

11. The method of claim 10 , wherein the compound is administered transdermally.

12. The method of claim 9 , wherein the pulmonary hypertension is pulmonary arterial hypertension.

13. The method of claim 9 , further comprising administering an additional therapeutic agent selected from the group consisting of vasoactive agents, diuretics, cardiac glycosides and anticoagulants.

14. The method of claim 11 , wherein the compound is administered via a transdermal patch.