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Elidel
Also known as: Elidel, 137071-32-0, Sdz-asm 981, Sdz-asm-981, Sdz asm 981, 33-epi-chloro-33-desoxyascomycin
Molecular Formula
C43H68ClNO11
Molecular Weight
810.4  g/mol
InChI Key
KASDHRXLYQOAKZ-XDSKOBMDSA-N
FDA UNII
7KYV510875

Pimecrolimus is a 33-epi-chloro-derivative of the ascomycin macrolactam with immunosuppressant property. Pimecrolimus binds to the receptor macrophilin-12 (FKBP-12) forming a complex that blocks the calcium-dependent signal transduction cascade mediated by calcineurin. Via dephosphorylation, calcineurin is the enzyme responsible for activating nuclear factor of activated T-cells (NF-AT), a T cell transcriptional regulatory factor. As a consequence, the synthesis and release of Th1- (T helper 1) and Th2- (T helper 2) type cytokines, and other inflammatory mediators from T-cells and mast cells are blocked and the expression of signals essential for the activation of inflammatory T-lymphocytes is inhibited. However, pimecrolimus mode of action is cell-selective and does not affect Langerhans' cells/dendritic cells and primary fibroblasts.
Pimecrolimus is a Calcineurin Inhibitor Immunosuppressant. The mechanism of action of pimecrolimus is as a Calcineurin Inhibitor.
1 2D Structure

Elidel

2 Identification
2.1 Computed Descriptors
2.1.1 IUPAC Name
(1R,9S,12S,13R,14S,17R,18E,21S,23S,24R,25S,27R)-12-[(E)-1-[(1R,3R,4S)-4-chloro-3-methoxycyclohexyl]prop-1-en-2-yl]-17-ethyl-1,14-dihydroxy-23,25-dimethoxy-13,19,21,27-tetramethyl-11,28-dioxa-4-azatricyclo[22.3.1.04,9]octacos-18-ene-2,3,10,16-tetrone
2.1.2 InChI
InChI=1S/C43H68ClNO11/c1-10-30-18-24(2)17-25(3)19-36(53-8)39-37(54-9)21-27(5)43(51,56-39)40(48)41(49)45-16-12-11-13-32(45)42(50)55-38(28(6)33(46)23-34(30)47)26(4)20-29-14-15-31(44)35(22-29)52-7/h18,20,25,27-33,35-39,46,51H,10-17,19,21-23H2,1-9H3/b24-18+,26-20+/t25-,27+,28+,29-,30+,31-,32-,33-,35+,36-,37-,38+,39+,43+/m0/s1
2.1.3 InChI Key
KASDHRXLYQOAKZ-XDSKOBMDSA-N
2.1.4 Canonical SMILES
CCC1C=C(CC(CC(C2C(CC(C(O2)(C(=O)C(=O)N3CCCCC3C(=O)OC(C(C(CC1=O)O)C)C(=CC4CCC(C(C4)OC)Cl)C)O)C)OC)OC)C)C
2.1.5 Isomeric SMILES
CC[C@@H]1/C=C(/C[C@@H](C[C@@H]([C@@H]2[C@H](C[C@H]([C@@](O2)(C(=O)C(=O)N3CCCC[C@H]3C(=O)O[C@@H]([C@@H]([C@H](CC1=O)O)C)/C(=C/[C@@H]4CC[C@@H]([C@@H](C4)OC)Cl)/C)O)C)OC)OC)C)\C
2.2 Other Identifiers
2.2.1 UNII
7KYV510875
2.3 Synonyms
2.3.1 MeSH Synonyms

1. 33-epi-chloro-33-desoxyascomycin

2. Asm 981

3. Elidel

4. Sdz Asm 981

5. Sdz-asm-981

2.3.2 Depositor-Supplied Synonyms

1. Elidel

2. 137071-32-0

3. Sdz-asm 981

4. Sdz-asm-981

5. Sdz Asm 981

6. 33-epi-chloro-33-desoxyascomycin

7. Asm 981

8. 7kyv510875

9. Elidel (tn)

10. Pimecrolimus [usan:inn:ban]

11. 1000802-56-1

12. 33-epichloro-33-desoxyascomycin

13. Pimecrolimus (jan/usan/inn)

14. Unii-7kyv510875

15. Asm-981

16. Asm-998

17. Ncgc00167506-01

18. Pimecrolimus (elidel)

19. Pimecrolimus [mi]

20. (-)-pimecrolimus

21. Pimecrolimus [inn]

22. Pimecrolimus [jan]

23. Pimecrolimus [usan]

24. Pimecrolimus [vandf]

25. Pimecrolimus [mart.]

26. Pimecrolimus [who-dd]

27. Schembl438880

28. Sdz Asm-981

29. Gtpl6783

30. Schembl3000675

31. Chembl1200686

32. Pimecrolimus, >=97% (hplc)

33. Chebi:135888

34. Pimecrolimus [orange Book]

35. Ex-a2138

36. Bdbm50248356

37. Mfcd00901792

38. S5004

39. Zinc85536990

40. Akos015895946

41. Ccg-270502

42. Db00337

43. Ncgc00167506-04

44. Hy-13723

45. B1817

46. D05480

47. Ab01566841_01

48. 071p320

49. Q417489

50. Q-201579

51. Brd-k92107055-001-01-9

52. (1r,9s,12s,13r,14s,17r,18e,21s,23s,24r,25s,27r)-12-[(1e)-1-[(1r,3r,4s)-4-chloro-3-methoxycyclohexyl]prop-1-en-2-yl]-17-ethyl-1,14-dihydroxy-23,25-dimethoxy-13,19,21,27-tetramethyl-11,28-dioxa-4-azatricyclo[22.3.1.0?,?]octacos-18-ene-2,3,10,16-tetrone

53. (3s,4r,5s,8r,9e,12s,14s,15r,16s,18r,19r,26as)-3-((e)-2-((1r,3r,4s)-4-chloro-3-methoxycyclohexyl)-1-methylvinyl)-8-ethyl-5,6,8,11,12,13,14,15,16,17,18,19,24,26,26a-hexadecahydro-5,19-epoxy-3h-pyrido(2,1-c)(1,4)oxaazacyclotricosine-1,17,20,21(4h,23h)-tetrone

54. 15,19-epoxy-3h-pyrido(2,1-c)(1,4)oxaazacyclotricosine-1,7,20,21(4h,23h)-tetrone, 3-((1e)-2-((1r,3r,4s)-4-chloro-3-methoxycyclohexyl)-1-methylethenyl)-8-ethyl-5,6,8,11,12,13,14,15,16,17,18,19,24,25,26,26a-hexadecahydro-5,19-dihydroxy-14,16-dimethoxy-4,10,12,18-tetramethyl-, (3s,4r,5s,8r,9e,12s,14s,15r,16s,18r,19r,26as)-

55. 15,19-epoxy-3h-pyrido(2,1-c)(1,4)oxaazacyclotricosine-1,7,20,21(4h,23h)-tetrone, 3-(2-(4-chloro-3-methoxycyclohexyl)-1-methylethenyl)-8-ethyl-, 5,6,8,11,12,13,14,15,16,17,18,19,24,25,26,26a-hexadecahydro-5,19-dihydroxy-14,16-dimethoxy-4,10,12,18-tetramethyl-, (3s-(3r*(e(1s*,3s*,4r*)),4s*,5r*,8s*,9e,12r*,14r*,15s*,16r*,18s*,19s*,26ar*))-

2.4 Create Date
2006-05-02
3 Chemical and Physical Properties
Molecular Weight 810.4 g/mol
Molecular Formula C43H68ClNO11
XLogP33.8
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count11
Rotatable Bond Count6
Exact Mass809.4480897 g/mol
Monoisotopic Mass809.4480897 g/mol
Topological Polar Surface Area158 Ų
Heavy Atom Count56
Formal Charge0
Complexity1440
Isotope Atom Count0
Defined Atom Stereocenter Count14
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count2
Undefined Bond Stereocenter Count0
Covalently Bonded Unit Count1
4 Drug and Medication Information
4.1 Drug Information
1 of 2  
Drug NameElidel
PubMed HealthPimecrolimus (On the skin)
Drug ClassesDermatological Agent
Drug LabelELIDEL (pimecrolimus) Cream 1% contains the compound pimecrolimus, the immunosuppressant 33-epi-chloro-derivative of the macrolactam ascomycin.Chemically, pimecrolimus is (1R,9S,12S,13R,14S,17R,18E,21S,23S,24R,25S,27R)-12-[(1E)-2-{(1R,3R,4S)-4-chl...
Active IngredientPimecrolimus
Dosage FormCream
RouteTopical
Strength1%
Market StatusPrescription
CompanyValeant Bermuda

2 of 2  
Drug NameElidel
PubMed HealthPimecrolimus (On the skin)
Drug ClassesDermatological Agent
Drug LabelELIDEL (pimecrolimus) Cream 1% contains the compound pimecrolimus, the immunosuppressant 33-epi-chloro-derivative of the macrolactam ascomycin.Chemically, pimecrolimus is (1R,9S,12S,13R,14S,17R,18E,21S,23S,24R,25S,27R)-12-[(1E)-2-{(1R,3R,4S)-4-chl...
Active IngredientPimecrolimus
Dosage FormCream
RouteTopical
Strength1%
Market StatusPrescription
CompanyValeant Bermuda

4.2 Drug Indication

For treatment of mild to moderate atopic dermatitis.


FDA Label


5 Pharmacology and Biochemistry
5.1 Pharmacology

Pimecrolimus is a chemical that is used to treat atopic dermatitis (eczema). Atopic dermatitis is a skin condition characterized by redness, itching, scaling and inflammation of the skin. The cause of atopic dermatitis is not known; however, scientists believe that it may be due to activation of the immune system by various environmental or emotional triggers. Scientists do not know exactly how pimecrolimus reduces the manifestations of atopic dermatitis, but pimecrolimus reduces the action of T-cells and mast cells which are part of the immune system and contribute to responses of the immune system. Pimecrolimus prevents the activation of T-cells by blocking the effects of chemicals (cytokines) released by the body that stimulate T-cells. Pimecrolimus also reduces the ability of mast cells to release chemicals that promote inflammation.


5.2 MeSH Pharmacological Classification

Anti-Inflammatory Agents, Non-Steroidal

Anti-inflammatory agents that are non-steroidal in nature. In addition to anti-inflammatory actions, they have analgesic, antipyretic, and platelet-inhibitory actions. They act by blocking the synthesis of prostaglandins by inhibiting cyclooxygenase, which converts arachidonic acid to cyclic endoperoxides, precursors of prostaglandins. Inhibition of prostaglandin synthesis accounts for their analgesic, antipyretic, and platelet-inhibitory actions; other mechanisms may contribute to their anti-inflammatory effects. (See all compounds classified as Anti-Inflammatory Agents, Non-Steroidal.)


Calcineurin Inhibitors

Compounds that inhibit or block the PHOSPHATASE activity of CALCINEURIN. (See all compounds classified as Calcineurin Inhibitors.)


Dermatologic Agents

Drugs used to treat or prevent skin disorders or for the routine care of skin. (See all compounds classified as Dermatologic Agents.)


Immunosuppressive Agents

Agents that suppress immune function by one of several mechanisms of action. Classical cytotoxic immunosuppressants act by inhibiting DNA synthesis. Others may act through activation of T-CELLS or by inhibiting the activation of HELPER CELLS. While immunosuppression has been brought about in the past primarily to prevent rejection of transplanted organs, new applications involving mediation of the effects of INTERLEUKINS and other CYTOKINES are emerging. (See all compounds classified as Immunosuppressive Agents.)


5.3 FDA Pharmacological Classification
5.3.1 Active Moiety
PIMECROLIMUS
5.3.2 FDA UNII
7KYV510875
5.3.3 Pharmacological Classes
Calcineurin Inhibitors [MoA]; Calcineurin Inhibitor Immunosuppressant [EPC]
5.4 ATC Code

D - Dermatologicals

D11 - Other dermatological preparations

D11A - Other dermatological preparations

D11AH - Agents for dermatitis, excluding corticosteroids

D11AH02 - Pimecrolimus


5.5 Absorption, Distribution and Excretion

Absorption

Because of the low systemic absorption of pimecrolimus following topical application the calculation of standard pharmacokinetic measures such as AUC, Cmax, half-life, etc. cannot be reliably done.


Route of Elimination

80% of the drug is excreted in the feces.


5.6 Metabolism/Metabolites

No drug metabolism was observed in human skin in vitro. Oral administration yielded metabolites produced from O-demethylation and oxygenation reactions.


5.7 Mechanism of Action

Pimecrolimus binds with high affinity to macrophilin-12 (FKBP-12) and inhibits the calcium-dependent phosphatase, calcineurin. As a consequence, it inhibits T cell activation by blocking the transcription of early cytokines. In particular, pimecrolimus inhibits at nanomolar concentrations Interleukin-2 and interferon gamma (Th1-type) and Interleukin-4 and Interleukin-10 (Th2-type) cytokine synthesis in human T cells. Also, pimecrolimus prevents the release of inflammatory cytokines and mediators from mast cells in vitro after stimulation by antigen/lgE.


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