SC-8109

SC-8109
Clinical data
Other names	19-Norspirolactone; 19-Nor-17α-(2-carboxyethyl)testosterone γ-lactone; 3-Oxo-17β-hydroxyestr-4-ene-17-propanoic acid lactone; 17-Hydroxy-3-oxo-19-Nor-17α-pregn-4-ene-21-carboxylic acid γ-lactone
Identifiers
	IUPAC name (8R,9S,10R,13S,14S,17R)-13-Methylspiro[1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthrene-17,5'-oxolane]-2',3-dione;
CAS Number	1722-54-9;
PubChem CID	168943;
ChemSpider	147774;
Chemical and physical data
Formula	C21H28O3
Molar mass	328.452 g·mol−1
3D model (JSmol)	Interactive image;
	SMILES C[C@]12CC[C@H]3[C@H]([C@@H]1CC[C@@]24CCC(=O)O4)CCC5=CC(=O)CC[C@H]35;
	InChI InChI=1S/C21H28O3/c1-20-9-6-16-15-5-3-14(22)12-13(15)2-4-17(16)18(20)7-10-21(20)11-8-19(23)24-21/h12,15-18H,2-11H2,1H3/t15-,16+,17+,18-,20-,21+/m0/s1; Key:CXXAIOQMCGJVHT-XUJOMZSTSA-N;

SC-8109 is a steroidal antimineralocorticoid of the spirolactone group which was never marketed.[1][2] It is a potent antagonist of the mineralocorticoid receptor and is more potent than the related drug SC-5233 (of which SC-8109 is the 19-nor analogue).[1][3] However, SC-8109 was found to have relatively low oral bioavailability and potency,[1][4] though it nonetheless produced a mild diuretic effect in patients with congestive heart failure.[2] Spironolactone (SC-9420; Aldactone), another spirolactone, followed and had both good oral bioavailability and potency, and was the first antimineralocorticoid to be marketed.[1][5]

In addition to its antimineralocorticoid activity, SC-8109 shows potent progestogenic activity, with similar potency relative to that of progesterone.[6] Its analogue, SC-5233, possesses similar but less potent progestogenic activity.[6] In addition, SC-5233 has been assessed and found to possess some antiandrogenic activity, antagonizing the effects of testosterone in animals, and SC-8109 may as well.[7]

Relative affinities (%) of SC-8109 and related steroids[8]
Compound	PR	AR	ER	GR	MR	SHBG	CBG
Progesterone	100	3–10	<1	<1	3–10	?	?
SC-8109	191	25–50	<1	<1	15–25	?	?
Values are percentages (%). Reference ligands (100%) were progesterone for the PR, testosterone for the AR, estradiol for the ER, DEXA for the GR, and aldosterone for the MR.

References

P. J. Bentley (1980). Endocrine Pharmacology: Physiological Basis and Therapeutic Applications. CUP Archive. pp. 160–. ISBN 978-0-521-22673-8.
E. Buchborn; K. D. Bock (14 December 2013). Diuresis and Diuretics / Diurese und Diuretica: An International Symposium Herrenchiemsee, June 17th–20th, 1959 Sponsored by CIBA / Ein Internationales Symposium Herrenchiemsee, 17.–20. Juni 1959 Veranstaltet mit Unterstützung der CIBA. Springer-Verlag. pp. 224, 261. ISBN 978-3-642-49716-2.
Hans H. Ussing; Poul Kruhoffer; Hess J. Thaysen; N.H. Thorn (8 March 2013). The Alkali Metal Ions in Biology: I. The Alkali Metal Ions in Isolated Systems and Tissues. II. The Alkali Metal Ions in the Organism. Springer Science & Business Media. pp. 418–. ISBN 978-3-642-49246-4.
Milan L. Brandon (1 January 1962). Corticosteroids in medical practice. Thomas.
Dennis V. Cokkinos (6 November 2014). Introduction to Translational Cardiovascular Research. Springer. pp. 61–. ISBN 978-3-319-08798-6.
Ralph I. Dorfman (5 December 2016). Steroidal Activity in Experimental Animals and Man. Elsevier Science. pp. 371–. ISBN 978-1-4832-7299-3.
Kagawa CM, Sturtevant FM, Van Arman CG (1959). "Pharmacology of a new steroid that blocks salt activity of aldosterone and desoxycorticosterone". J. Pharmacol. Exp. Ther. 126 (2): 123–30. PMID 13665517. [SC-5233] (total dose of 5 mg/rat) partially blocked the effects of testosterone propionate on the seminal vesicles and prostate in similar animals.
Raynaud, J.P.; Ojasoo, T.; Bouton, M.M.; Philibert, D. (1979). "Receptor Binding as a Tool in the Development of New Bioactive Steroids": 169–214. doi:10.1016/B978-0-12-060308-4.50010-X. Cite journal requires |journal= (help)

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[Bentley1980-1] P. J. Bentley (1980). Endocrine Pharmacology: Physiological Basis and Therapeutic Applications. CUP Archive. pp. 160–. ISBN 978-0-521-22673-8.

[BuchbornBock2013-2] E. Buchborn; K. D. Bock (14 December 2013). Diuresis and Diuretics / Diurese und Diuretica: An International Symposium Herrenchiemsee, June 17th–20th, 1959 Sponsored by CIBA / Ein Internationales Symposium Herrenchiemsee, 17.–20. Juni 1959 Veranstaltet mit Unterstützung der CIBA. Springer-Verlag. pp. 224, 261. ISBN 978-3-642-49716-2.

[UssingKruhoffer2013-3] Hans H. Ussing; Poul Kruhoffer; Hess J. Thaysen; N.H. Thorn (8 March 2013). The Alkali Metal Ions in Biology: I. The Alkali Metal Ions in Isolated Systems and Tissues. II. The Alkali Metal Ions in the Organism. Springer Science & Business Media. pp. 418–. ISBN 978-3-642-49246-4.

[Brandon1962-4] Milan L. Brandon (1 January 1962). Corticosteroids in medical practice. Thomas.

[Cokkinos2014-5] Dennis V. Cokkinos (6 November 2014). Introduction to Translational Cardiovascular Research. Springer. pp. 61–. ISBN 978-3-319-08798-6.

[Dorfman2016-6] Ralph I. Dorfman (5 December 2016). Steroidal Activity in Experimental Animals and Man. Elsevier Science. pp. 371–. ISBN 978-1-4832-7299-3.

[pmid13665517-7] Kagawa CM, Sturtevant FM, Van Arman CG (1959). "Pharmacology of a new steroid that blocks salt activity of aldosterone and desoxycorticosterone". J. Pharmacol. Exp. Ther. 126 (2): 123–30. PMID 13665517. [SC-5233] (total dose of 5 mg/rat) partially blocked the effects of testosterone propionate on the seminal vesicles and prostate in similar animals.

[RaynaudOjasoo1979-8] Raynaud, J.P.; Ojasoo, T.; Bouton, M.M.; Philibert, D. (1979). "Receptor Binding as a Tool in the Development of New Bioactive Steroids": 169–214. doi:10.1016/B978-0-12-060308-4.50010-X. Cite journal requires |journal= (help)

SC-8109

See also

References