Megestrol caproate

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Not to be confused with Megestrol acetate.
Megestrol caproate
Clinical data
Other namesMGC; Megestrol hexanoate; Megestrol 17α-caproate; 17α-Hydroxy-6-dehydro-6-methylprogesterone 17α-caproate; 17α-Hydroxy-6-methylpregna-4,6-diene-3,20-dione 17α-caproate
Drug classProgestin; Progestogen; Progestogen ester
Identifiers
  • [(8R,9S,10R,13S,14S,17R)-17-Acetyl-6,10,13-trimethyl-3-oxo-2,8,9,11,12,14,15,16-octahydro-1H-cyclopenta[a]phenanthren-17-yl] hexanoate
PubChem CID
ChemSpider
Chemical and physical data
FormulaC28H40O4
Molar mass440.624 g·mol−1
3D model (JSmol)
  • CCCCCC(=O)O[C@@]1(CC[C@@H]2[C@@]1(CC[C@H]3[C@H]2C=C(C4=CC(=O)CC[C@]34C)C)C)C(=O)C
  • InChI=1S/C28H40O4/c1-6-7-8-9-25(31)32-28(19(3)29)15-12-23-21-16-18(2)24-17-20(30)10-13-26(24,4)22(21)11-14-27(23,28)5/h16-17,21-23H,6-15H2,1-5H3/t21-,22+,23+,26-,27+,28+/m1/s1
  • Key:XDVHIXRJLWUKRR-ORZTVLAMSA-N

Megestrol caproate, abbreviated as MGC, is a progestin medication which was never marketed.[1][2] It was developed in Russia in 2002.[1] In animals, MGC shows 10-fold higher progestogenic activity compared to progesterone when both are administered via subcutaneous injection.[1] In addition, MGC has no androgenic, anabolic, or estrogenic activity.[1] The medication was suggested as a potential contraceptive and therapeutic agent.[1]

Chemistry

See also: Progestogen ester and List of progestogen esters

Megestrol caproate, also known as megestrol 17α-caproate, as well as 17α-hydroxy-6-dehydro-6-methylprogesterone 17α-caproate or as 17α-hydroxy-6-methylpregna-4,6-diene-3,20-dione 17α-caproate, is a synthetic pregnane steroid and a derivative of progesterone and 17α-hydroxyprogesterone.[1][2] It is the C17α caproate (hexanoate) ester of megestrol.[1][2] Closely related medications include megestrol acetate (MGA; megestrol 17α-acetate), acetomepregenol (megestrol 3β,17α-diacetate), and cymegesolate (megestrol 17α-acetate 3β-cypionate).[3][4][5][6] In addition to MGA, analogues of MGC include chlormadinone caproate, gestonorone caproate, hydroxyprogesterone caproate, medroxyprogesterone caproate, and methenmadinone caproate.

References

  1. ^ a b c d e f g Pirzada OL (June 2002). "Effect of megestrol caproate on the reproductive function of laboratory animals". Bulletin of Experimental Biology and Medicine. 133 (6): 574–576. doi:10.1023/A:1020233925626. PMID 12447469. S2CID 24115315.
  2. ^ a b c Grinenko GS, Kadatskii GM, Korkhov VV, Boikova VV (1981). "Preparation of 6-methylpregna-4,6-diene-3β,17α-diol-20-one 17-caproate and its influence on the reproductive function in rats". Pharmaceutical Chemistry Journal. 15 (10): 718–720. doi:10.1007/BF00765383. ISSN 0091-150X. S2CID 46676531.
  3. ^ Elks J (14 November 2014). The Dictionary of Drugs: Chemical Data: Chemical Data, Structures and Bibliographies. Springer. pp. 595, 664, 657. ISBN 978-1-4757-2085-3.
  4. ^ Grinenko GS, Popova EV, Korkhov VV, Lesik EA, Petrosyan MA, Topil'skaya NI (March 2000). "Synthesis and biological activity of 17α-acetoxy-3β-phenylpropionyloxy-6-methylpregna-4,6-dien-20-one". Pharmaceutical Chemistry Journal. 34 (3): 113–114. doi:10.1007/BF02524577. ISSN 1573-9031. S2CID 44235508. Note that 3,17-diacetoxy-6-methylpregna-4,6-dien-20-one (1b), a structural analog of compound 1a, is certified in Russia under the trade name acetomepregnol and recommended for therapeutic purposes in gynecological practice and as a contraceptive preparation in combination with estrogens [4].
  5. ^ De-Wei Z (1982). "Research activities in the field of oral contraceptives in the People's Republic of China". Acta Obstetricia et Gynecologica Scandinavica. Supplement. 105: 51–60. doi:10.3109/00016348209155319. PMID 6952745. S2CID 44858028.
  6. ^ Yang YC, Gu XG, Li SX (1982). "Antifertility Effect of a Long-Acting Progestin (3-Cyclopentyl Propionate of Megestrol Acetate): Prematurity of the Endometrium and Accompanying Changes of Uteroglobin and Progesterone in Uterine Fluid". In Beier HM, Karlson P (eds.). Proteins and Steroids in Early Pregnancy. pp. 335–342. doi:10.1007/978-3-642-67890-5_22. ISBN 978-3-642-67892-9.
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