EP2285383A2 - Sequential administration of 20,20,21,21-pentafluoro-17-hydroxy-11 -ý4-(hydroxyacetyl) phenyl¨-19-nor-17 -pregna-4,9-diene-3-one and one or more progestational hormones for treating gynaecological diseases - Google Patents

Abstract

The invention relates to a treatment regime and to combination preparations of 20,20,21,21,21 -pentafluoro-17-hydroxy-11 ß-[4- (hydroxyacetyl)phenyl]-19-nor-17a-pregna-4,9-diene-3-one of formula (I). Said invention relates to, in particular, a sequential regime for treating gynaecological diseases in which, in a first phase, the above-mentioned progesterone antagonist is administered and, in a second phase, a progestational hormone is administered.

Description

 Sequential administration of 20, 20, 21, 21, 21-pentafluoro-17-hydroxy-11β- [4-

(hydroxyacetyl) phenyl] -19-nor-17α-pregna-4,9-dien-3-one and one or more progestagens for the treatment of gynecological diseases

The present invention relates to treatment regimens and combination preparations of 20, 20, 21, 21, pentafluoro-17-hydroxy-11β- [4- (hydroxyacetyl) phenyl] -19-nor-17α-pregna-4,9-diene 3-on the formula

In particular, this invention relates to sequential regimens for the treatment of gynecological diseases in which the progesterone antagonist mentioned above is administered in a first phase and a progestogen in a second phase.

The invention also relates to treatment regimens in which 11β- (4-acetylphenyl) -20,20,21,21,21-pentafluoro-17-hydroxy-19-nor-17α-pregna-4,9-dien-3-one ( Lonaprisan) is used.

Compounds with antigestagenic activity (competitive progesterone receptor antagonists) first became known in 1982 (RU 486, EP57115) and have since been extensively described. From the abovementioned progesterone receptor antagonists, structurally different antigestagenic steroids with fluorinated 17α-side chain - including 11β- (4-acetylphenyl) - 20,20,21, 21, 21 -pentafluoro-17-hydroxy-19-nor-17α-pregna 4,9-dien-3-one - have been published in WO98 / 34947 and Fuhrmann et al., J. Med. Chem. 43, 5010-5016 (2000).

20,20,21, 21,21-pentafluoro-17-hydroxy-11β- [4- (hydroxyacetyl) phenyl] -19-nor-17α-pregna-4,9-dien-3-one can be prepared as follows :

i) 11β- (4-ethenylphenyl) -5-hydroxy-5α-estr-9-ene-3,17-dione-3- (2,2-dimethylpropane-1,3-diyl) ketal 3.3 g of magnesium turnings are placed under protective gas in 14 ml of absolute tetrahydrofuran and treated with a drop of 1, 2-dibromoethane. After the reaction, a solution of 25 g of 4-bromostyrene in 137 ml of absolute tetrahydrofuran is slowly added dropwise so that the internal temperature remains in the range of 40 to 45 ° C. The reaction mixture is stirred for one hour until the magnesium has reacted completely. Then the batch is mixed with 2.26 g of copper (I) chloride. A solution of 8.5 g of 5,10-epoxy-5α, 10α-estr-9 (11) -en- 3,17-dione-3- (2,2-dimethylpropane-1,3-diyl) ketal (preparation see Tetrahedron Lett. 26, 2069-2072 (1985)) in 137 ml of absolute tetrahydrofuran is slowly added dropwise. The reaction mixture is stirred for one hour at room temperature and then poured onto saturated aqueous ammonium chloride solution. The aqueous phase is extracted with ethyl acetate, the organic phases combined, washed with saturated aqueous sodium chloride solution and dried over sodium sulfate. It is filtered and concentrated in vacuo. Column chromatography on silica gel with a mixture of hexane / ethyl acetate gives 6.76 g of the title compound as a colorless foam.

¹ H-NMR (300 MHz, CDCl ₃ ): δ = 7.30 d (J = Q Hz, 2H, aryl); 7.18 d (J = 9 Hz, 2H, aryl);

6.66 dd (J = M Hz + 11 Hz, 1H ₁ vinyl); 5.70 dbr (J = M Hz, 1H, vinyl); 5.20 dbr (J = M Hz, 1H, vinyl); 4.44 s (1H, 5-OH); 4.29 dbr (J = 6.5 Hz, 1H, H-11); 3.53 m (2H, 3-ketal); 3.51 m (J = 11, 4 Hz, 1 H, 3-ketal); 3.42 m (J = 11, 4 Hz, 1 H, 3-ketal); 1.05 s (3H, 3-ketal); 0.85s (3H, 3-ketal); 0.49s (3H, H-18).

ii) 11β- (4-ethenylphenyl) -20,20,21,21,21-pentafluoro-5,17-dihydroxy-19-nor-5α, 17α-pregn-9-en-3-one (2, 2-dimethylpropane-1,3-diyl) ketal

27.9 g of condensed pentafluoroiodoethane in 140 ml of absolute toluene is treated with a solution of 6.76 g of the compound prepared under i) in 140 ml of absolute toluene at -78 ° C. 66.3 ml of a 1.5 molar solution of methyllithium-lithium bromide complex in diethyl ether are added at this temperature. The mixture is then stirred at 0 ⁰ C for one hour. Then the reaction mixture is poured onto saturated aqueous ammonium chloride solution. It is extracted with ethyl acetate, washed with saturated aqueous sodium chloride solution, dried over sodium sulfate and concentrated in vacuo. Chromatography of the resulting crude product on silica gel with a mixture of hexane / ethyl acetate gives 3.73 mg of the title compound as a white foam. ¹ H-NMR (300 MHz, CDCl 3): δ = 7.30 d (J = 9 Hz, 2H, aryl); 7.17 d (J = 9 Hz, 2H, aryl);

6.67 dd (J = M Hz + 11 Hz, 1H, vinyl); 5.71 dbr (J = 17 Hz, 1H, vinyl); 5.20 dbr (J = 11 Hz, 1H, vinyl); 4.45 s (1H ₁ 5-OH); 4.31 dbr (J = 6.5 Hz, 1H, H-11); 3.53 m (2H, 3-ketal); 3.51 m (J = 11, 4 Hz, 1 H, 3-ketal); 3.42 m (J = MA Hz, 1 H, 3-ketal); 1.05 s (3H, 3-ketal); 0.85s (3H, 3-ketal); 0.54s (3H, H-18).

iii) 11β- [4- (1,2-dihydroxyethyl) phenyl] -20,20,21,21,21-pentafluoro-5,17-dihydroxy-19-nor-5α, 17α-pregn-9-ene 3-one (2,2-dinethylpropane-1,3-diyl) ketal

To a solution of 1 g of the compound prepared according to ii) in 8.4 ml of tetrahydrofuran, 1.68 ml of an aqueous pH 7.00 buffer solution of potassium dihydrogen phosphate and dipotassium hydrogen phosphate and 206 mg of trimethylamine-Λ / oxide are added. At 0 ^° C., 4.3 ml of a solution of 250 mg of osmium tetroxide in 50 ml of butanol are added dropwise. The reaction mixture is stirred for three hours at room temperature and then poured onto saturated aqueous sodium thiosulfate solution. It is extracted with ethyl acetate, washed with saturated aqueous sodium chloride solution, dried over sodium sulfate and concentrated in vacuo. Chromatography of the resulting crude product on silica gel with a mixture of hexane / ethyl acetate gives 860 mg of the title compound as a white foam. An epimer mixture is obtained on benzylcarbinol.

¹ H-NMR (300 MHz, CDCl ₃ ): δ = 7.25 d (J = 9 Hz, 2H, aryl); 7.20 d (J = 9 Hz, 2H, aryl);

4.78 m (1H, CHOH); 4.44 s (1H, 5-OH); 4.32 dbr (J = 6.5 Hz, 1H, H-11); 3.73 m (1H, CH ₂ OH); 3.65 m (1H, CH ₂ OH); 3.54 m (2H, 3-ketal); 3.52 m (J = H ₁ O Hz, 1 H, 3-ketal); 3.44 m (J = H ₁ O Hz, 1 H, 3-ketal); 1, 04 s (3H, 3-ketal); 0.87 s (3H ₁ 3-ketal); 0.51 s (3H, H-18).

iv) 11β- [4- (1,2-dihydroxyethyl) phenyl] -20,20,21,21,21-pentafluoro-17-hydroxy-19-nor-17α-pregna-4,9-diene-3- on

200 mg of the compound described under iii) are stirred in 3 ml of methanol with 141 .mu.l of aqueous semi-concentrated sulfuric acid for one hour at room temperature. It is then poured onto saturated aqueous sodium bicarbonate solution and extracted with ethyl acetate. The organic phase is washed with saturated aqueous sodium chloride solution, dried over sodium sulfate, filtered and concentrated in vacuo. Column chromatography on silica gel with a mixture of Hexane / ethyl acetate gives 78 mg of the title compound as a colorless foam. An epimer mixture is obtained on benzylcarbinol.

¹ H-NMR (300 MHz, CDCl 3): δ = 7.25 d (J = 9 Hz, 2H, aryl); 7.15 d (J = 9 Hz, 2H, aryl);

5.77 s (1H, H-4); 4.74 m (1 H ₁ CHOH); 4.42 dbr (J = 7 Hz, 1H, H-11); 3.69 m (1H, CH ₂ OH); 3.59 m (1H, CH ₂ OH); 0.56s (3H, H-18).

v) 20,20,21, 21, 21-pentafluoro-11β- [4- (hydroxyacetyl) phenyl] -5,17-dihydroxy-19-nor-5α, 17α-pregn-9-en-3-one (2,2-dimethylpropane-1,3-diyl) ketal

At room temperature, 283 μl of Fe / t-butyl hydroperoxide are added dropwise to 3.6 mg of chromium trioxide in 7 ml of dichloromethane. Subsequently, a solution of 450 mg of the compound prepared under iii) was added dropwise in 7 ml of dichloromethane. The mixture is stirred for three hours at room temperature. The reaction is stopped by adding dimethyl sulfide. It is washed with saturated aqueous sodium chloride solution, dried over sodium sulfate and concentrated in vacuo. Chromatography of the resulting crude product on silica gel with a mixture of hexane / ethyl acetate gives 87 mg of the title compound as a white foam.

1 H-NMR (300 MHz, CDCl 3): δ = 7.83 d (J = 9 Hz, 2H, aryl); 7.37 d (J = 9 Hz, 2H, aryl);

4.84 m (2H, CH ₂ OH); 4.37 dbr (J = 6.5 Hz ₁ 1 H, H-11); 3.53 m (2H, 3-ketal); 3.47 m (J = 11, 0 Hz, 1 H ₁ 3-ketal); 3.42 m (J = H ₁ O Hz, 1 H, 3-ketal); 1, 04 s (3H, 3-ketal); 0.85s (3H, 3-ketal); 0.49 s (3H ₁ H-18).

vi) 20,20,21,21,21-pentafluoro-17-hydroxy-11β- [4- (hydroxyacetyl) phenyl] -19-nor-17α-pregna-4,9-dien-3-one

87 mg of the compound described under v) are reacted analogously to the process described under iv) in 1, 4 ml of methanol with 62 .mu.l of aqueous semi-concentrated sulfuric acid to 25 mg of the title compound as a colorless foam.

1 H-NMR (300 MHz, CDCl 3): δ = 7.86 d (J = 9 Hz, 2H, aryl); 7.34d (J = 9Hz, 2H, aryl);

5.81 s (1H ₁ H-4); 4.85 dbr (J = 5 Hz, 2H, CH ₂ OH); 4.50 dbr (J = 7 Hz, 1H, H-11); 3.50 tbr (J = 5 Hz, 1H, OH); 0.57s (3H, H-18).

Examples 3a and 3b of US 11 / 984.331 and PCT / EP2007 / 009997 in which further production processes of 20,20,21, 21, 21-pentafluoro-17-hydroxy-11β- [4- (hydroxyacetyl) phenyl] -19-nor-17α-pregna-4,9-dien-3-one are hereby incorporated by reference.

The application of substances with antagonistic properties to the progesterone receptor (PR antagonists and SPRMs or selective progesterone receptor modulators) leads to changes in the endometrial morphology if it takes place over a longer period of time. These changes are important for all long-term applications, whether for the treatment of gynecological diseases such as endometriosis, uterine leiomyomas or for the treatment of abnormal or dysfunctional menstrual bleeding. In preclinical experiments, studies on primates have shown that PR antagonistic compounds have an antiproliferative effect on endometrial cells. This is also called a non-competitive anti-estrogenic effect. Accompanying with this antiproliferative effect compaction of the endometrial stroma was observed and a cystic dilatation of the endometrial glands (Hodgen GD, VAN UEM JF ₁ CHILLIK CF DANFORTH DR, WOLF JP, Neulen J, WILLIAMS RF, Chwalisz K: Non- competitive anti- Oestrogenic activity of progesterone antagonists in primate mode Hum Reprod (1994) 9 Suppl 1, 77-81; SLAYDEN OD, ZELINSKI WOOTEN MB, CHWALISZ K, STOUFFER RL, BRENNER RM: Chronic treatment of cycling rhesus monkeys with low doses of the antiprogestin ZK 137 316: morphometric assessment of the uterus and oviduct, Hum Reprod (1998) 13 (2), 269-77; SLAYDEN OD, BRENNER RM: RU 486 action after estrogen priming in the endometrium and oviducts of rhesus monkeys (Macaca mulatta J Clin Endocrinol Metab (1994) 78 (2), 440-8). The use of the PR antagonist mifepristone in patients led to similar effects: cystic dilatation of the endometrial glands, an inactive endometrial epithelium and a reduced mitotic activity of the endometrium (NARVEKAR N, CAMERON S, CRITCHLEY HO, LIN S, CHENG L, BAIRD DT: Low can Endocrinol Metab (2004) 89 (5), 2491-7; BAIRD DT, BROWN A, CRITCHLEY HO, WILLIAMS AR, LIN S, CHENG L: Effect of long-term immunosuppression and up-regulators. term Reprod (2003) 18 (1), 61-8). In addition, it is known that the use of PR antagonists and SPRMs over a prolonged - so the duration of a menstrual cycle exceeding - period leads to a lack of menstruation. They induce a Amenorrhea (NARVEKAR N ₁ CRITCHLEY HO, CHENG L, BAIRD DT: Mifepristone-induced amenorrhoea is associated with an increase in microvessel density and glucocorticoid receptor and a decrease in stromal vascular endothelial growth factor.) Hum Reprod (2006) 21 (9), 2312 -8th). The histological changes induced by the application of PR antagonists and SPRMs to the human endometrium can not be described in the common pathological categories (HORNE FM, BLITHE DL: Progesterone receptor modulators and the endometrium: changes and consequences, Hum Reprod Update (2007) 13 (6): 567-80 Evaluation of such endometrial biopsies is hampered by this unique morphology and lack of classification, for example, patients with mifepristone treatment have been diagnosed with increased endometrial thickness using transvaginal ultrasound Other studies describe endometrial hyperplasia without atypia in patients after long-term treatment with mifepristone (EISINGER SH, MELDRUM S, FISCELLA K ₁ et al., Low-dose mifepristone for uterine leiomyoma.) Obstet Gynecol 2003; 101: 243 - 50) .These Be However, care is controversial and re-evaluation of these patients led to the declassification of some patients (Eisinger SH, Bonfi glio T, Fiscella K, et al. Twelve-month safety and effi cacy of low-dose mifepristone for uterine myomas. J Minim Invasive Gynecol 2005; 12: 227 - 33). In a recent published study of the effects of SPRM asoprisnil, a pattern of "nonphysiological secretory effect" was diag- nosed after 3 months of use in the endometrium: the endometrium showed a low level of stromal and glandular proliferation, developed partial secretory glandular features, and stromal changes. In addition, a thickening of the smooth muscle cell layer surrounding the endometrial vessels has been described (WILLIAMS AR, CRITCHLEY HO, OSEI J, INGAMELLS S, CAMERON IT, HAN C, CHWALISZ K: The effects of the selective progesterone receptor modulator asoprisnil on the morphology of uterine tissues after 3 months treatment in patients with symptomatic uterine leiomyomata, Hum Reprod (2007) 22 (6), 1696-704).

For a safe, effective long-term use of PR antagonists in patients a reversibility of the described endometrial effects should be ensured, on the one hand, a safety risk for the patients on the other hand, to counteract an increased risk of misdiagnosis.

Sequential treatment regimes of competitive progesterone antagonists with gestagens are, for. In US 6,043,234, SPRMs with progestins in US 2005/0215535 and US 2005/0215536.

The object of the present invention is to provide a pharmaceutical which is suitable for the safe long-term treatment of gynecological diseases such as endometriosis, uterine leiomyomas or dysfunctional menstrual bleeding. In addition to the effectiveness in the indications mentioned, this medicinal product is intended to ensure both a reversibility of the described effects on the endometrium and thus an increased safety of the uterus, to allow a controlled menstruation and to prevent possible misdiagnosis due to the potentially induced endometrial thickness.

The present invention solves this problem by the discontinuous use of the progesterone receptor antagonist 20,20, 21, 21, 21-pentafluoro-17-hydroxy-11β- [4- (hydroxyacetyl) phenyl] -19-nor-17α-pregna-4, 9-dien-3-one.

For this purpose, the progesterone receptor antagonist 20,20,21, 21, 21-pentafluoro-17-hydroxy-11β- [4- (hydroxyacetyl) phenyl] -19-nor-17α-pregna-4,9-dien-3-one in one or more consecutive treatment cycles, each treatment cycle consisting of two treatment periods.

In the first treatment period of each treatment cycle, over 28-168, preferably 56-112, more preferably 84 days, the progesterone receptor antagonist 20, 20, 21, 21-pentafluoro-17-hydroxy-11β- [4]

(hydroxyacetyl) phenyl] -19-nor-17α-pregna-4,9-dien-3-one.

After the end of this first treatment period, there is a second treatment period in each treatment cycle in which no progesterone receptor antagonist is given.

In this second treatment period of each treatment cycle, either gestagen-containing (gestagen monopreparations or Gestagen combination preparations, for example with estrogens, such as commercial contraceptives or preparations for hormone replacement therapy) or gestagenfreie dosage units containing other drugs or no dosage units administered.

If gestagen-containing dosage units are administered in the second treatment period, the duration of this second treatment period is 1 to 30, preferably 5 to 20, particularly preferably 7 to 14 days. In particular, second treatment periods with a duration of 7, 10, 11, 12, 14, 21 or 28 days are conceivable.

Progestogens are substances which have a contraceptive effect and are able to induce withdrawal bleeding. These include z. Chlormanidone acetate, cyproterone acetate, desogestrel, dienogest, drospirenone, dydrogesterone, ethynodiol diacetate, etonorgestrel, gestodene, levonorgestrel, medrogestone, medroxyprogesterone and medroxyprogesterone acetate, norethindrone, norethisterone and norethisterone acetate, norgestimate, norgestrel, progesterone, promegestone or trimegestone.

In addition, but not necessary would be the administration of an estrogen, z. As ethinyl estradiol, estradiol, estriol, estetrol, estrone or conjugated equine estrogens conceivable. The corresponding progestagen or estrogen dosing can be partially taken from the patent application US 2005/0215536, paragraphs 13-15, which is hereby incorporated by reference into the present application. Further dosage proposals can be found for example in the Red List of 2007.

Immediately thereafter, the next cycle of treatment would begin with the progesterone receptor antagonist as described above. Due to the direct application of the progesterone receptor antagonist following the administration of the gestagen, menstruation is expected to be induced.

If gestagen-free dosage units containing other active substances or no dosage units are administered in the second treatment period, then with the next treatment cycle - ie the re-administration of the progesterone receptor antagonist in the first treatment period of the following Treatment cycle - to be maintained until the onset of menstruation (flexible break). As expected, this should be done within 30 days of stopping the progesterone receptor antagonist in most women. In individual cases, this menstrual-free period may take longer. Preferred here is a period of 2 - 4 weeks.

It would also be conceivable to subdivide the second treatment period of each treatment cycle into two further treatment periods, wherein in the first treatment period the gestagen-containing, optionally also supplementary estrogen-containing dosage units, in the immediately subsequent second treatment period, the gestagenfreie dosage units containing other agents or none Dose units are administered. In this case too, the next treatment cycle - ie the re-administration of the progesterone receptor antagonist in the first treatment period of the following treatment cycle - should be awaited until menstruation occurs. As expected, this is done after weaning of the gestagen. Also possible is the beginning of the next treatment cycle after the end of menstruation. Depending on the number of progestogen-containing daily dosage units previously administered (e.g., 7, 10, 11, 12, 14, 21), n gestagen-free dosage units would also be conceivable, where n = 28 - "number of progestogen-containing daily dosage units previously administered."

In addition, during the entire treatment period or individual parts thereof, ie during the entire treatment cycle, in particular during the first and / or second treatment period and / or during the first and / or second treatment period of the second treatment period, further active ingredients - such as e.g. Folic acid and its salts or metafolin. To illustrate the terms treatment cycle, treatment period and treatment period, see the following table:

I treatment cycle |

I first treatment period I second treatment period |

I first treatment period second treatment period |

I administration of the progesterone receptor antagonist I administration of the progestagen lacks I

I gift of the progesterone receptor antagonist I gift of the gestagen flexible break |

I administration of the progesterone receptor antagonist I flexible break | missing | If the second treatment period is missing - that is, if the second treatment period consists of only one, namely the first treatment period - the next treatment cycle follows immediately after completion of gestagen administration or the flexible break.

Instead of administering 20,20,21, 21,21-pentafluoro-17-hydroxy-11β- [4- (hydroxyacetyl) phenyl] -19-nor-17α-pregna-4,9-dien-3-one the administrations of 11β- (4-acetylphenyl) -20,20,21, 21,21-pentafluoro-17-hydroxy-19-nor-17α-pregna-4,9-dien-3-one (Lonaprisan) with im essential equal clinical success conceivable.

In particular, the following treatment regimens are conceivable:

The progesterone receptor antagonist is primarily 20,20,21,21,21-pentafluoro-17-hydroxy-11β- [4- (hydroxyacetyl) phenyl] -19-nor-17α-pregna-4,9-dien-3-one Question. As to be combined with progestagens come primarily drospirenone, dienogest or levonorgestrel in question. The progestogen / estrogen combination is predominantly commercially - e.g. in oral contraceptives - available combinations are considered. Placebo not only means a drug-free dosage form, but also dosage forms that contain different Wirkstoffβi of progesterone receptor antagonists, gestagens or progestogen / estrogen combinations in particular folic acid, its salts or metafolin. Instead of the explicitly mentioned periods of the first treatment period, at least for blocks 1 to 9, periods of 10, 11 and 12 days are also considered. For reasons of space, it was refrained from expressly mentioning each individual subcombination of specific active ingredients in the regimes disclosed above. But it should be all the above combinations in which the words

Progesterone receptor antagonist by 20,20,21,21,21-pentafluoro-17-hydroxy-11β- [4- (hydroxyacetyl) phenyl] -19-nor-17α-pregna-4,9-dien-3-one and progestogen by drospirenone;

Progesterone receptor antagonist by 20,20,21,21,21-pentafluoro-17-hydroxy-11β- [4- (hydroxyacetyl) phenyl] -19-nor-17α-pregna-4,9-dien-3-one and progestogen by dienogest;

Progesterone receptor antagonist by 20,20,21,21,21-pentafluoro-17-hydroxy-11β- [4- (hydroxyacetyl) phenyl] -19-nor-17α-pregna-4,9-dien-3-one and progestogen by levonorgestrel or - Progesterone receptor antagonist by 20,20,21, 21, 21-pentafluoro-17-hydroxy-11β- [4- (hydroxyacetyl) phenyl] -19-nor-17α-pregna-4,9-dien-3-one and

Gestagen / estrogen by drospirenone / ethinylestradiol

be replaced.

In addition to the above-mentioned treatment regimens (sequential use), a combination preparation containing the progesterone receptor antagonist 20,20,21, 21,21-pentafluoro-17-hydroxy-11β- [4- (hydroxyacetyl) phenyl] is also used, in particular for the treatment of endometriosis. 19-nor-17α-pregna-4,9-dien-3-one and formulated as a fixed combination (concomitant use). Instead of the formulation as a fixed combination is also a separate formulation of the progesterone receptor antagonist 20,20,21, 21, 21 -pentafluoro-17-hydroxy-11β- [4- (hydroxyacetyl) phenyl] -19-nor-17α-pregna-4 , 9-dien-3-one and the gestagen, if these are intended for simultaneous use - especially if they are packaged together.

Also conceivable would be regimens in which the word progesterone receptor antagonist is replaced by 11β- (4-acetylphenyl) -20,20,21,21,21-pentafluoro-17-hydroxy-19-nor-17α-pregna-4,9-diene. 3-on (Lonaprisan) is replaced - including the abovementioned substitutions of the words progestogen or gestagen / estrogen.

In all of the abovementioned treatment regimens, oral dosage forms for single daily administration are preferred. These can be summarized in a drug package for sequential use and summarized with a leaflet that informs about the correct revenue sequence.

20,20,21,21,21-pentafluoro-17-hydroxy-11β- [4- (hydroxyacetyl) phenyl] -19-nor-17α-pregna-4,9-dien-3-one can be obtained by one skilled in the art formulated common methods using physiologically and pharmacologically acceptable excipients and additives. The same applies to 11β- (4-acetylphenyl) -20,20,21,21,21-pentafluoro-17-hydroxy-19-nor-17α-pregna-4,9-dien-3-one (Lonaprisan).

Formulations of progestogens and progestogen / estrogen combinations are also prior art and can be taken from this. The following examples serve to illustrate the invention without limiting it in any way.

Example 1:

Thirty-six healthy tubal ligated women, aged 24 to 43, underwent a randomized study of the effect of lonaprisan. For this purpose, the women were divided into three groups: 7 women received placebo, 14 women 1 mg Lonaprisan and 15 women 10 mg Lonaprisan over a period of 3 months, once daily. Continuous treatment with the daily administration of lonaprisan resulted in inhibition of ovulation in the patients and a bleeding pattern consistent with amenorrhoea or markedly reduced bleeding. Both effects were not observed in the placebo group. Upon discontinuation of Lonaprisan, there was a spontaneous return of menstrual bleeding. Furthermore, endometrial biopsies showed no persistent changes in the endometrium in the patients after the first menstrual bleeding after the end of the treatment phase.

Example 2:

Women of reproductive age are randomized in two cycles of 20,20,21, 21, 21-pentafluoro-17-hydroxy-11β- [4- (hydroxyacetyl) phenyl] -19-nor-17α-pregna in a randomized study. 4,9-dien-3-one treated. 20,20,21, 21, 21-pentafluoro-17-hydroxy-11β- [4

(hydroxyacetyl) phenyl] -19-nor-17α-pregna-4,9-dien-3-one, each administered for 84 days at a daily dose of between about 1 mg and about 50 mg, followed by ingestion of a progestogen over one Period of about 10 to 14 days. This entire treatment cycle is repeated once. Clinical endpoints are the respective disease symptoms, as well as the bleeding pattern of women, ovulation inhibition and endometrial morphology. Sequential Treatment of Women With 20,20, 21, 21, 21-pentafluoro-17-hydroxy-11β- [4- (hydroxyacetyl) phenyl] -19-nor-17α-pregna-4,9-diene-3 On and the progestin leads to a Menstruationsblutung following the gift of the gestagen. During the treatment phase with 20,20,21, 21, 21-pentafluoro-17-hydroxy-11β- [4-

(hydroxyacetyl) phenyl] -19-nor-17α-pregna-4,9-dien-3-one, women have a bleeding pattern, which is amenorrhea or greatly reduced bleeding equivalent. Endometrial biopsies after completion of each treatment cycle show no persistent changes in the endometrium of the patients.

Claims

claims

1. Pharmaceutical combination preparation containing

- Single dose units of the progesterone receptor antagonist

20, 20, 21, 21, 21-pentafluoro-17-hydroxy-11β- [4- (hydroxyacetyl) phenyl] -19-nor-17α-pregna-4,9-dien-3-one of the formula

and

- Single dosage units of a gestagen

for its sequential, oral administration for the treatment of gynecological diseases.

2. Combination preparation according to claim 1 containing 28 to 168 dosage units of the progesterone receptor antagonist.

3. Combination preparation according to claim 2 containing 56 to 112 dosage units of the progesterone receptor antagonist.

4. Combination preparation according to claim 3 containing 84 dose units of the progesterone receptor antagonist.

5. Combination preparation according to claim 1 containing 1 to 30 dosage units of the gestagen.

6. Combination preparation according to claim 5 containing 5 to 20 dosage units of the gestagen.

7. Combination preparation according to claim 6 containing 7 to 14 dosage units of the gestagen.

8. Combination preparation according to claim 1 containing 7, 10, 11, 12, 14, 21 or 28 dose units of the gestagen.

9. Combination preparation according to claim 1 containing as progestin drospirenone, dienogest or levonorgestrel.

10. Combination preparation according to one of claims 1 to 9 for the treatment of gynecological diseases, in particular of uterine leiomyomas, endometriosis or breast cancer.

11. Pharmaceutical preparation containing

- Single dose units of the progesterone receptor antagonist

20, 20, 21, 21, 21-pentafluoro-17-hydroxy-11β- [4- (hydroxyacetyl) phenyl] -19-nor-17α-pregna-4,9-dien-3-one of the formula

and

a leaflet that states that the next cycle of treatment should begin with or after the onset of menstrual bleeding.