Chemistry:Cyclodiol

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Short description: Chemical compound
Cyclodiol
Cyclodiol.svg
Clinical data
Other namesZK-115194; Cycloestradiol; 14α,17α-Ethano-17β-estradiol; 14α,17α-Ethanoestra-1,3,5(10)-triene-3,17β-diol; 14,21-Cyclo-19-norpregna-1,3,5(10)-triene-3,17α-diol
Routes of
administration
By mouth[1]
Drug classEstrogen
Pharmacokinetic data
Bioavailability33 ± 19%[1]
Elimination half-life28.7 hours[1]
Identifiers
CAS Number
PubChem CID
ChemSpider
UNII
Chemical and physical data
FormulaC20H26O2
Molar mass298.426 g·mol−1
3D model (JSmol)

Cyclodiol (developmental code name ZK-115194; also known as 14α,17α-ethano-17β-estradiol) is a synthetic estrogen which was studied in the 1990s and was never marketed.[2][1][3] It is a derivative of estradiol with a bridge between the C14α and C17α positions.[2][1][3][4] Cyclodiol has 100% of the relative binding affinity of estradiol for the human ERα and similar transactivational capacity as estradiol at the receptor.[2] It has comparable potency to estradiol when administered by subcutaneous injection.[2] The drug shows genotoxicity similarly to estradiol.[2][4] Cyclodiol showed an absolute bioavailability of 33 ± 19% and an elimination half-life of 28.7 hours in pharmacokinetic studies in women.[1]

See also

References

  1. 1.0 1.1 1.2 1.3 1.4 1.5 "Comparative pharmacokinetics of two new steroidal estrogens and ethinylestradiol in postmenopausal women". Contraception 54 (4): 235–242. October 1996. doi:10.1016/S0010-7824(96)00194-1. PMID 8922877. 
  2. 2.0 2.1 2.2 2.3 2.4 Estrogens and Antiestrogens II: Pharmacology and Clinical Application of Estrogens and Antiestrogen. Springer Science & Business Media. 6 December 2012. pp. 10,15,76,329,332. ISBN 978-3-642-60107-1. https://books.google.com/books?id=wBvyCAAAQBAJ&pg=PA10. 
  3. 3.0 3.1 "Studies for a genotoxic potential of some endogenous and exogenous sex steroids. I. Communication: examination for the induction of gene mutations using the Ames Salmonella/microsome test and the HGPRT test in V79 cells". Environmental and Molecular Mutagenesis 21 (3): 272–304. 1993. doi:10.1002/em.2850210311. PMID 8462531. 
  4. 4.0 4.1 "Genotoxic potential of estrogens". Mutation Research 389 (2–3): 173–181. March 1997. doi:10.1016/S1383-5718(96)00144-1. PMID 9093381.