BE556145A

BE556145A -

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Publication number: BE556145A
Authority: BE; Belgium
Prior art keywords: methyl; oxo; steroid; hydroxy; general formula
Prior art date

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English (en)

French (fr)

Publication of BE556145A publication Critical patent/BE556145A/fr

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HEDRZPFGACZZDS-UHFFFAOYSA-N chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 50
QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 29
LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 26
VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical group Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 23
JUJWROOIHBZHMG-UHFFFAOYSA-N pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 23
238000000034 method Methods 0.000 claims description 14
238000002360 preparation method Methods 0.000 claims description 14
-1 3,3-ethylendioxy- Chemical class 0.000 claims description 12
239000003153 chemical reaction reagent Substances 0.000 claims description 11
FYSNRJHAOHDILO-UHFFFAOYSA-N Thionyl chloride Chemical group ClS(Cl)=O FYSNRJHAOHDILO-UHFFFAOYSA-N 0.000 claims description 8
239000002904 solvent Substances 0.000 claims description 7
GLVYLTSKTCWWJR-UHFFFAOYSA-N 2-carbonoperoxoylbenzoic acid Chemical compound OOC(=O)C1=CC=CC=C1C(O)=O GLVYLTSKTCWWJR-UHFFFAOYSA-N 0.000 claims description 6
239000002253 acid Substances 0.000 claims description 4
230000002378 acidificating Effects 0.000 claims description 4
150000007857 hydrazones Chemical class 0.000 claims description 4
230000008929 regeneration Effects 0.000 claims description 4
238000011069 regeneration method Methods 0.000 claims description 4
230000001476 alcoholic Effects 0.000 claims description 3
125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims description 3
BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate dianion Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 2
229910052783 alkali metal Inorganic materials 0.000 claims description 2
150000001340 alkali metals Chemical class 0.000 claims description 2
229910052782 aluminium Inorganic materials 0.000 claims description 2
OAKJQQAXSVQMHS-UHFFFAOYSA-N hydrazine Substances NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 claims description 2
150000002429 hydrazines Chemical class 0.000 claims description 2
150000003431 steroids Chemical class 0.000 claims description 2
239000012024 dehydrating agents‎ Substances 0.000 claims 3
XCRBXWCUXJNEFX-UHFFFAOYSA-N Peroxybenzoic acid Chemical compound OOC(=O)C1=CC=CC=C1 XCRBXWCUXJNEFX-UHFFFAOYSA-N 0.000 claims 1
150000002118 epoxides Chemical class 0.000 claims 1
229910052751 metal Inorganic materials 0.000 claims 1
239000002184 metal Substances 0.000 claims 1
125000000962 organic group Chemical group 0.000 claims 1
239000011435 rock Substances 0.000 claims 1
RTZKZFJDLAIYFH-UHFFFAOYSA-N diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 34
OKKJLVBELUTLKV-UHFFFAOYSA-N methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 31
238000002844 melting Methods 0.000 description 28
239000000203 mixture Substances 0.000 description 22
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 19
CSCPPACGZOOCGX-UHFFFAOYSA-N acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 18
150000001875 compounds Chemical class 0.000 description 15
238000006243 chemical reaction Methods 0.000 description 12
VLKZOEOYAKHREP-UHFFFAOYSA-N hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 12
238000010992 reflux Methods 0.000 description 12
UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 10
229960000583 Acetic Acid Drugs 0.000 description 9
239000000543 intermediate Substances 0.000 description 9
238000002425 crystallisation Methods 0.000 description 7
230000005712 crystallization Effects 0.000 description 7
239000008079 hexane Substances 0.000 description 6
KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
239000003795 chemical substances by application Substances 0.000 description 5
AUPXBVDHVRZMIB-UHFFFAOYSA-M C[Mg]I Chemical compound C[Mg]I AUPXBVDHVRZMIB-UHFFFAOYSA-M 0.000 description 4
241001465754 Metazoa Species 0.000 description 4
QTBSBXVTEAMEQO-UHFFFAOYSA-M acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 4
WFDIJRYMOXRFFG-UHFFFAOYSA-N acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 4
238000006297 dehydration reaction Methods 0.000 description 4
FYYHWMGAXLPEAU-UHFFFAOYSA-N magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 4
YMWUJEATGCHHMB-UHFFFAOYSA-N methylene dichloride Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 4
IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
238000000746 purification Methods 0.000 description 4
NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 3
INQOMBQAUSQDDS-UHFFFAOYSA-N Methyl iodide Chemical compound IC INQOMBQAUSQDDS-UHFFFAOYSA-N 0.000 description 3
GCKMFJBGXUYNAG-HLXURNFRSA-N Methyltestosterone Chemical compound C1CC2=CC(=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@](C)(O)[C@@]1(C)CC2 GCKMFJBGXUYNAG-HLXURNFRSA-N 0.000 description 3
XEKOWRVHYACXOJ-UHFFFAOYSA-N acetic acid ethyl ester Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
235000019270 ammonium chloride Nutrition 0.000 description 3
238000010790 dilution Methods 0.000 description 3
LYCAIKOWRPUZTN-UHFFFAOYSA-N glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
229960001566 methyltestosterone Drugs 0.000 description 3
QDHHCQZDFGDHMP-UHFFFAOYSA-N monochloramine Chemical compound ClN QDHHCQZDFGDHMP-UHFFFAOYSA-N 0.000 description 3
125000002524 organometallic group Chemical group 0.000 description 3
MUBZPKHOEPUJKR-UHFFFAOYSA-N oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
230000003389 potentiating Effects 0.000 description 3
239000000583 progesterone congener Substances 0.000 description 3
238000003756 stirring Methods 0.000 description 3
HVYWMOMLDIMFJA-DPAQBDIFSA-N (3β)-Cholest-5-en-3-ol Chemical compound C1C=C2C[C@@H](O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2 HVYWMOMLDIMFJA-DPAQBDIFSA-N 0.000 description 2
RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 2
VMNRNUNYBVFVQI-UHFFFAOYSA-N 10,13-dimethyl-1,2,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-3-one Chemical compound C1CC2CC(=O)CCC2(C)C2C1C1CCCC1(C)CC2 VMNRNUNYBVFVQI-UHFFFAOYSA-N 0.000 description 2
239000005977 Ethylene Substances 0.000 description 2
UIIMBOGNXHQVGW-UHFFFAOYSA-M NaHCO3 Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
JOXIMZWYDAKGHI-UHFFFAOYSA-N P-Toluenesulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 2
229960001712 Testosterone Propionate Drugs 0.000 description 2
PDMMFKSKQVNJMI-BLQWBTBKSA-N Testosterone propionate Chemical compound C1CC2=CC(=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H](OC(=O)CC)[C@@]1(C)CC2 PDMMFKSKQVNJMI-BLQWBTBKSA-N 0.000 description 2
238000007792 addition Methods 0.000 description 2
125000001931 aliphatic group Chemical group 0.000 description 2
230000001195 anabolic Effects 0.000 description 2
230000001548 androgenic Effects 0.000 description 2
238000009835 boiling Methods 0.000 description 2
125000004432 carbon atoms Chemical group C* 0.000 description 2
230000000875 corresponding Effects 0.000 description 2
238000000354 decomposition reaction Methods 0.000 description 2
125000005594 diketone group Chemical group 0.000 description 2
238000001704 evaporation Methods 0.000 description 2
230000002349 favourable Effects 0.000 description 2
230000004927 fusion Effects 0.000 description 2
239000012362 glacial acetic acid Substances 0.000 description 2
238000010438 heat treatment Methods 0.000 description 2
229910052739 hydrogen Inorganic materials 0.000 description 2
239000001257 hydrogen Substances 0.000 description 2
125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
XMBWDFGMSWQBCA-UHFFFAOYSA-M iodide Chemical compound [I-] XMBWDFGMSWQBCA-UHFFFAOYSA-M 0.000 description 2
239000011777 magnesium Substances 0.000 description 2
229910052749 magnesium Inorganic materials 0.000 description 2
125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
229910052757 nitrogen Inorganic materials 0.000 description 2
125000004043 oxo group Chemical group O=* 0.000 description 2
BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
235000011118 potassium hydroxide Nutrition 0.000 description 2
DNIAPMSPPWPWGF-UHFFFAOYSA-N propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 2
150000007659 semicarbazones Chemical class 0.000 description 2
CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 2
239000007787 solid Substances 0.000 description 2
WYURNTSHIVDZCO-UHFFFAOYSA-N tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
GNLJBJNONOOOQC-UHFFFAOYSA-N $l^{3}-carbane;magnesium Chemical compound [Mg]C GNLJBJNONOOOQC-UHFFFAOYSA-N 0.000 description 1
QIOYEDVDPAWRGZ-BLRAIOBUSA-N (8R,9S,10R,13S,14S)-10,13-dimethylspiro[1,2,4,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthrene-3,2'-1,3-dioxolane]-17-ol Chemical compound C([C@@H]1[C@@H]([C@]2(CC3)C)CC[C@]4([C@H]1CCC4O)C)C=C2CC13OCCO1 QIOYEDVDPAWRGZ-BLRAIOBUSA-N 0.000 description 1
GPAYFLROALHUFV-OKPKYCIKSA-N (8S,9S,10R,13R,14S,17R)-10,13-dimethyl-17-[(2R)-6-methylheptan-2-yl]spiro[1,2,4,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthrene-3,2'-1,3-dioxolane] Chemical compound C([C@H]1[C@@H]2CC[C@@H]([C@]2(CC[C@@H]1[C@@]1(C)CC2)C)[C@H](C)CCCC(C)C)C=C1CC12OCCO1 GPAYFLROALHUFV-OKPKYCIKSA-N 0.000 description 1
GNFABWAPJFOZSF-RTDHNQHTSA-N (8S,9S,10R,13S,14S,17S)-17-acetyl-6,10,13-trimethyl-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-3-one Chemical compound C([C@@]12C)CC(=O)C=C1C(C)C[C@@H]1[C@@H]2CC[C@]2(C)[C@@H](C(C)=O)CC[C@H]21 GNFABWAPJFOZSF-RTDHNQHTSA-N 0.000 description 1
AOEYGYUEIRXWQD-UHFFFAOYSA-N 4-chloro-1-trimethylsilylhex-1-yn-3-one Chemical compound CCC(Cl)C(=O)C#C[Si](C)(C)C AOEYGYUEIRXWQD-UHFFFAOYSA-N 0.000 description 1
PNEYBMLMFCGWSK-UHFFFAOYSA-N AI2O3 Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
229940040526 Anhydrous Sodium Acetate Drugs 0.000 description 1
SRSXLGNVWSONIS-UHFFFAOYSA-N Benzenesulfonic acid Chemical compound OS(=O)(=O)C1=CC=CC=C1 SRSXLGNVWSONIS-UHFFFAOYSA-N 0.000 description 1
210000004369 Blood Anatomy 0.000 description 1
NSUAHFGSTVVZJR-GGEBUSMZSA-N C(C)(=O)O[C@H]1CC[C@@H]2[C@]1(C)CC[C@H]1[C@H]2CC(C2=CC(=O)CC[C@]12C)C Chemical compound C(C)(=O)O[C@H]1CC[C@@H]2[C@]1(C)CC[C@H]1[C@H]2CC(C2=CC(=O)CC[C@]12C)C NSUAHFGSTVVZJR-GGEBUSMZSA-N 0.000 description 1
NEHMKBQYUWJMIP-UHFFFAOYSA-N Chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 description 1
229940107161 Cholesterol Drugs 0.000 description 1
229940064701 Corticosteroid nasal preparations for topical use Drugs 0.000 description 1
229960001334 Corticosteroids Drugs 0.000 description 1
239000004593 Epoxy Substances 0.000 description 1
CHNXZKVNWQUJIB-CEGNMAFCSA-N Ethisterone Chemical compound O=C1CC[C@]2(C)[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 CHNXZKVNWQUJIB-CEGNMAFCSA-N 0.000 description 1
229960000445 Ethisterone Drugs 0.000 description 1
241001325354 Lamiinae Species 0.000 description 1
229940050176 Methyl Chloride Drugs 0.000 description 1
FUSUHKVFWTUUBE-UHFFFAOYSA-N Methyl vinyl ketone Chemical compound CC(=O)C=C FUSUHKVFWTUUBE-UHFFFAOYSA-N 0.000 description 1
RJKFOVLPORLFTN-STHVQZNPSA-N Progesterone Natural products O=C(C)[C@@H]1[C@@]2(C)[C@H]([C@H]3[C@@H]([C@]4(C)C(=CC(=O)CC4)CC3)CC2)CC1 RJKFOVLPORLFTN-STHVQZNPSA-N 0.000 description 1
SMQUZDBALVYZAC-UHFFFAOYSA-N Salicylaldehyde Chemical compound OC1=CC=CC=C1C=O SMQUZDBALVYZAC-UHFFFAOYSA-N 0.000 description 1
DUIOPKIIICUYRZ-UHFFFAOYSA-N Semicarbazide Chemical compound NNC(N)=O DUIOPKIIICUYRZ-UHFFFAOYSA-N 0.000 description 1
XHQYBDSXTDXSHY-UHFFFAOYSA-N Semicarbazide hydrochloride Chemical compound Cl.NNC(N)=O XHQYBDSXTDXSHY-UHFFFAOYSA-N 0.000 description 1
QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
RJKFOVLPORLFTN-LEKSSAKUSA-N Syngestrets Chemical compound C1CC2=CC(=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H](C(=O)C)[C@@]1(C)CC2 RJKFOVLPORLFTN-LEKSSAKUSA-N 0.000 description 1
JSPLKZUTYZBBKA-UHFFFAOYSA-N Trioxidane Chemical compound OOO JSPLKZUTYZBBKA-UHFFFAOYSA-N 0.000 description 1
238000006640 acetylation reaction Methods 0.000 description 1
239000003377 acid catalyst Substances 0.000 description 1
239000012445 acidic reagent Substances 0.000 description 1
125000004423 acyloxy group Chemical group 0.000 description 1
125000002723 alicyclic group Chemical group 0.000 description 1
XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
150000001434 androst-5-enes Chemical class 0.000 description 1
150000001441 androstanes Chemical class 0.000 description 1
OFWBDYUSWOSTGT-UHFFFAOYSA-N benzenesulfonic acid;toluene Chemical compound CC1=CC=CC=C1.OS(=O)(=O)C1=CC=CC=C1 OFWBDYUSWOSTGT-UHFFFAOYSA-N 0.000 description 1
230000015572 biosynthetic process Effects 0.000 description 1
239000008280 blood Substances 0.000 description 1
VEXZGXHMUGYJMC-UHFFFAOYSA-M chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
238000004587 chromatography analysis Methods 0.000 description 1
239000012141 concentrate Substances 0.000 description 1
238000001816 cooling Methods 0.000 description 1
239000003246 corticosteroid Substances 0.000 description 1
125000004122 cyclic group Chemical group 0.000 description 1
150000002009 diols Chemical class 0.000 description 1
230000000694 effects Effects 0.000 description 1
VGGSQFUCUMXWEO-UHFFFAOYSA-N ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
238000005755 formation reaction Methods 0.000 description 1
238000001640 fractional crystallisation Methods 0.000 description 1
238000005194 fractionation Methods 0.000 description 1
239000003862 glucocorticoid Substances 0.000 description 1
AEMRFAOFKBGASW-UHFFFAOYSA-N glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 description 1
125000004435 hydrogen atoms Chemical class [H]* 0.000 description 1
238000006460 hydrolysis reaction Methods 0.000 description 1
238000006317 isomerization reaction Methods 0.000 description 1
150000002576 ketones Chemical class 0.000 description 1
PMZURENOXWZQFD-UHFFFAOYSA-L na2so4 Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
230000001264 neutralization Effects 0.000 description 1
150000002894 organic compounds Chemical class 0.000 description 1
239000012044 organic layer Substances 0.000 description 1
150000004967 organic peroxy acids Chemical class 0.000 description 1
239000003960 organic solvent Substances 0.000 description 1
235000006408 oxalic acid Nutrition 0.000 description 1
KJIFKLIQANRMOU-UHFFFAOYSA-N oxidanium;4-methylbenzenesulfonate Chemical compound O.CC1=CC=C(S(O)(=O)=O)C=C1 KJIFKLIQANRMOU-UHFFFAOYSA-N 0.000 description 1
230000003647 oxidation Effects 0.000 description 1
238000007254 oxidation reaction Methods 0.000 description 1
230000020477 pH reduction Effects 0.000 description 1
ZLMJMSJWJFRBEC-UHFFFAOYSA-N potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
229910052700 potassium Inorganic materials 0.000 description 1
239000011591 potassium Substances 0.000 description 1
239000001184 potassium carbonate Substances 0.000 description 1
229910000027 potassium carbonate Inorganic materials 0.000 description 1
229960003387 progesterone Drugs 0.000 description 1
239000000186 progesterone Substances 0.000 description 1
238000001953 recrystallisation Methods 0.000 description 1
VMHLLURERBWHNL-UHFFFAOYSA-M sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
OUFRIWNNMFWZTM-UHFFFAOYSA-M sodium arsanilate Chemical compound [Na+].NC1=CC=C([As](O)([O-])=O)C=C1 OUFRIWNNMFWZTM-UHFFFAOYSA-M 0.000 description 1
229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
235000017557 sodium bicarbonate Nutrition 0.000 description 1
239000001187 sodium carbonate Substances 0.000 description 1
229910000029 sodium carbonate Inorganic materials 0.000 description 1
235000011121 sodium hydroxide Nutrition 0.000 description 1
229910052938 sodium sulfate Inorganic materials 0.000 description 1
235000011152 sodium sulphate Nutrition 0.000 description 1
229940083878 topical for treatment of hemorrhoids and anal fissures Corticosteroids Drugs 0.000 description 1