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Clinical data
Routes of
ATC code
  • None
  • S-[(4aR,4bS,6aS,7S,7aS,8aS,8bS,8cR,9R)-4a,6a-Dimethyl-2,5'-dioxo-2,4',4b,5,5',6,6a,7a,8,8a,8b,8c,9,10-tetradecahydro-3'H,4aH-spiro[cyclopropa[4,5]cyclopenta[1,2-a]phenanthrene-7,2'-furan]-9-yl] ethane thioate
CAS Number
PubChem CID
Chemical and physical data
Molar mass426.57 g·mol−1
3D model (JSmol)
  • CC(=O)SC1CC2=CC(=O)C=CC2(C3C1C4C5CC5C6(C4(CC3)C)CCC(=O)O6)C
  • InChI=InChI=1S/C25H30O4S/c1-13(26)30-19-11-14-10-15(27)4-7-23(14,2)17-5-8-24(3)22(21(17)19)16-12-18(16)25(24)9-6-20(28)29-25/h4,7,10,16-19,21-22H,5-6,8-9,11-12H2,1-3H3/t16-,17+,18+,19-,21+,22+,23+,24+,25+/m1/s1

Mespirenone (INN) (developmental code name ZK-94679), also known as Δ1-15β,16β-methylenespironolactone, is a steroidal antimineralocorticoid of the spirolactone group related to spironolactone that was never marketed.[1][2] Animal research found that it was 3.3-fold more potent as an antimineralocorticoid relative to spironolactone.[3] In addition to its antimineralocorticoid properties, mespirenone is also a progestogen, antigonadotropin, and antiandrogen.[2][4] It is 2- to 3-fold as potent as spironolactone as a progestogen and antigonadotropin but its antiandrogenic activity is markedly reduced and weak (though still of significance) in comparison.[4][5] Mespirenone is also a potent and specific enzyme inhibitor of 18-hydroxylase and thus of mineralocorticoid biosynthesis.[6] The drug was under development by Schering (now Bayer Schering Pharma) and reached phase II clinical trials but was discontinued in 1989.[7]

See also[edit]


  1. ^ J. Elks (14 November 2014). The Dictionary of Drugs: Chemical Data: Chemical Data, Structures and Bibliographies. Springer. pp. 775–. ISBN 978-1-4757-2085-3.
  2. ^ a b Losert W, Bittler D, Buse M, Casals-Stenzel J, Haberey M, Laurent H, Nickisch K, Schillinger E, Wiechert R (1986). "Mespirenone and other 15,16-methylene-17-spirolactones, a new type of steroidal aldosterone antagonists". Arzneimittelforschung. 36 (11): 1583–600. PMID 3028435.
  3. ^ Arzneimittel-Forschung. Editio Cantor. 1991.
  4. ^ a b Nishino Y, Schröder H, el Etreby MF (1988). "Experimental studies on the endocrine side effects of new aldosterone antagonists". Arzneimittelforschung. 38 (12): 1800–5. PMID 3245852.
  5. ^ Opoku J, Kalimi M, Agarwal M, Qureshi D (1991). "Effect of a new mineralocorticoid antagonist mespirenone on aldosterone-induced hypertension". Am. J. Physiol. 260 (2 Pt 1): E269–71. doi:10.1152/ajpendo.1991.260.2.E269. PMID 1996630.
  6. ^ Weindel K, Lewicka S, Vecsei P (1991). "Inhibitory effects of the novel anti-aldosterone compound mespirenone on adrenocortical steroidogenesis in vitro". Arzneimittelforschung. 41 (9): 946–9. PMID 1796922.
  7. ^ Eckhard Ottow; Hilmar Weinmann (8 September 2008). Nuclear Receptors as Drug Targets. John Wiley & Sons. pp. 410–. ISBN 978-3-527-62330-3.