Treprostinil derivative compounds and methods of using same

1. A transdermal patch comprising a topical composition comprising a compound of Formula (I) or a pharmaceutically acceptable salt, polymorph or stereoisomer thereof:

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 P 1 , wherein P 1 is selected from:

wherein:

m is 1, 2, 3 or 4;

R 14 and R 15 are independently in each occurrence selected from 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 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 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 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 alkyl, halo, haloalkyl, hydroxy, alkoxy, and haloalkoxy;

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

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

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

R 15 and R 19 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 P 2 is selected from:

wherein:

m is 1, 2, 3 or 4; and

R 14 is independently in each occurrence selected from H, alkyl, cycloalkyl, alkylcycloalkyl, haloalkyl, heteroalkyl, substituted alkyl, aryl, heteroaryl, arylalkyl, heteroarylalkyl, substituted aryl, substituted heteroaryl, substituted arylalkyl, and substituted heteroarylalkyl.

2. The transdermal patch of claim 1 , wherein for the compound of Formula (I):

(a) R 1 is H and R 2 is P 2 ; or

(b) R 1 is P 2 and R 2 is H or

(c) R 1 is P 2 and R 2 is P 2 ; or

(d) R 1 and R 2 are each H.

3. The transdermal patch of claim 1 , wherein for the compound of Formula (I):

(a) each of R 20 through R 36 is H; or

(b) at least one of R 20 through R 36 is deuterium.

4. The transdermal patch of claim 1 , wherein the topical composition further comprises a permeation enhancer, and optionally one or more additional excipients selected from solubilizers, emulsifiers, lipophilic solvents, and thickeners.

5. The transdermal patch of claim 4 , wherein the permeation enhancer is selected from dimethyl sulfoxide (DMSO), decylmethylsulfoxide, laurocapram, pyrrolidones, surfactants, azone-like compounds, alcohols, polyethylene glycol, diethylene glycol monoethyl ether, N-lauroyl sarcosine, sodium octyl sulfate, sodium lauryl sulfoacetate, aliphatic thiols, fatty acids, and fatty acid esters.

6. The transdermal patch of claim 5 , wherein:

the pyrrolidones are selected from 2-pyrrolidone and N-methyl-2-pyrrolidone;

the surfactants are selected from sodium laureth sulfate and sorbitan monolaurate;

the alcohol is oleyl alcohol;

the polyethylene glycol is PEG 400;

the fatty acid is oleic acid; and

the fatty acid esters are selected from isopropyl myristate, methyl laurate, glyceryl oleate, glycerol mono-oleate, and propylene glycol mono-oleate.

7. The transdermal patch of claim 4 , wherein the solubilizers are selected from C 2 -C 8 alcohols.

8. The transdermal patch of claim 4 , wherein the lipophilic solvents are selected from lipophilic alcohols, polyethylene glycol, diethylene glycol monoethyl ether, polysorbates, Labrasol, fatty acid esters, diethyl sebacate, propylene glycol monocaprylate, propylene glycol laurate, mono- and di-glycerides, medium-chain triglycerides, caprylic/capric triglyceride, glyceryl monocaprylate, glyceryl mono-oleate, glyceryl mono-linoleate, glycerol oleate/propylene glycol, mineral oil, and vegetable oils.

9. The transdermal patch of claim 8 , wherein:

the lipophilic alcohols are selected from hexylene glycol, octyldodecanol, oleyl alcohol and stearyl alcohol;

the polyethylene glycol is selected from PEG 100, PEG 300, PEG 400 and PEG 3350;

the polysorbates are selected from Tween 20 to 80;

the fatty acid esters are selected from isopropyl myristate and di-isopropyl adipate; and

the mono- and di-glycerides are Capmul MCM.

10. The transdermal patch of claim 4 , wherein the thickeners are selected from glycerol, stearyl alcohol, and polymers.

11. The transdermal patch of claim 10 , wherein the polymers are selected from polydimethylsiloxane (dimethicone), Carbopol polymers, acrylic polymers, polyvinyl alcohol, polyvinylpyrrolidone, methyl cellulose, ethyl cellulose, hydroxymethyl cellulose, and hydroxypropyl cellulose.

12. The transdermal patch of claim 1 , wherein the topical composition further comprises a hydrophilic solvent.

13. The transdermal patch of claim 12 , wherein the hydrophilic solvent is a C 1 -C 5 alcohol or/and water.

14. The transdermal patch of claim 13 , wherein the C 1 -C 5 alcohol is ethanol, isopropanol, glycerol, propylene glycol or 1,2-pentanediol.

15. The transdermal patch of claim 1 , which further comprises a microporous membrane, a skin adhesive and a backing material.

16. A method of treating pulmonary hypertension, comprising applying to a subject in need of treatment the transdermal patch of claim 1 .

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