摘要:
The present invention relates to a new industrial process for the synthesis of solvate-free 17α-acetoxy-11β-[4-(N,N-dimethyl-amino)-phenyl]-19-norpregna-4,9-diene-3,20-dione [CDB-2914] of formula (I) which is a strong antiprogestogene and antiglucocorticoid agent. The invention also relates to compounds of formula (VII) and (VIII) used as intermediates in the process.The process according to the invention is the following:i) 3-(ethylene-dioxy)-estra-5(10),9(11)-diene-17-one of formula (X) is reacted with potassium acetilyde formed in situ in dry tetrahydrofuran by known method,ii) the obtained 3-(ethylene-dioxy)-17α-ethynyl-17β-hydroxy-estra-5(10),9(11)-diene of formula (IX) is reacted with phenylsulfenyl chloride in dichloromethane in the presence of triethylamine and acetic acid,iii) the obtained isomeric mixture of 3-(ethylene-dioxy)-21-(phenyl-sulfinyl)-19-norpregna-5(10),9(11),17(20),20-tetraene of formula (VIII) is reacted first with sodium methoxide in methanol, then with trimethyl phosphite,iv) the obtained 3-(ethylene-dioxy)-17α-hydroxy-20-methoxy-19-norpregna-5(10),9(11),20-triene of formula (VII) is reacted with hydrogen chloride in methanol, thenv) the obtained 3-(ethylene-dioxy)-17α-hydroxy-19-norpregna-5(10),9(11)-diene-20-one of formula (VI) is reacted with ethylene glycol in dichloromethane in the presence of trimethyl orthoformate and p-toluenesulfonic acid by known method,vi) the obtained 3,3,20,20-bis(ethylene-dioxy)-17α-hydroxy-19-norpregna-5(10),9(11)-diene of formula (V) is reacted with hydrogen peroxide in a mixture of pyridine and dichloromethane in the presence of hexachloroacetone by known method,vii) the obtained 3,3,20,20-bis(ethylene-dioxy)-17α-hydroxy-5,10-epoxy-19-norpregn-9(11)-ene of formula (IV), containing approximately a 1:1 mixture of 5α,10α- and 5β,10β-epoxides, is isolated from the solution and reacted with a Grignard reagent obtained from 4-bromo-N,N-dimethyl-aniline in tetrahydrofuran in the presence of copper(I) chloride catalyst without separation of the isomers by known method,viii) the obtained 3,3,20,20-bis(ethylene-dioxy)-5α,17α-dihydroxy-11β-[4-(N,N-dimethylamino)-phenyl]-19-norpregn-9(11)-ene of formula (III) is reacted with potassium hydrogensulfate in water by known method,ix) the obtained 11β-[4-(N,N-dimethylamino)-phenyl]-17α-hydroxy-19-norpregn-4,9-diene-3,20-dione of formula (II) is acetylated with acetic anhydride in the presence of perchloric acid by known method, finallyx) the solvate-free compound of formula (I) is liberated from the obtained solvate containing compound of formula (I) in a 1:1 mixture of ethanol and water at 70° C.
摘要:
The invention relates to antiinflammatory compounds of the formula (I), ##STR1## wherein A stands for hydrogen, hydroxyl or trifluoroacetoxy group;X stands for hydrogen or halogen with the proviso that if A is hydrogen, then X also means hydrogen;R stands for hydrogen, benzoyl or C.sub.1-8 alkanoyl group; and represents a single or double bond between two adjacent carbon atoms,as well as pharmaceutical compositions containing these compounds and a process for their preparation.
摘要:
The invention relates to antiinflammatory compounds of the formula (I), ##STR1## wherein A stands for hydrogen or hydroxyl group;X stands for hydrogen or halogen with the proviso that if A is hydrogen, then X also means hydrogen;R stands for hydrogen, benzoyl or C.sub.1-8 alkanoyl group;R.sup.1 and R.sup.2, which are the same or different, stand for hydrogen or a C.sub.1-4 alkyl group; or one of R.sup.1 and R.sup.2 is hydrogen and the other is phenyl group; or R.sup.1 and R.sup.2 together form a C.sub.4-5 alkylene group;means a single or double bond between two adjacent carbon atoms,as well as pharmaceutical compositions containing these compounds and a process for their preparation.
摘要:
New .DELTA..sup.1,3,5 -3-chloro-pregnane derivatives of the general formula (I), ##STR1## wherein X is hydrogen atom, acetyl group or a chloroacetyl group, andY and Z represent hydrogen atom or a halogen atom, with the proviso that at least one of them is other than hydrogen,are prepared by reacting a .DELTA..sup.1,4 -3-oxo-pregnane derivative of the general formula (II), ##STR2## wherein X' is acetyl group or a chloroacetyl group and Y and Z are as defined above, with a chloromethyleneiminium salt of the general formula (III), ##STR3## wherein A.sup.(-) is a salt-forming anion, in an aprotic solvent in the presence of a tertiary base, and, if desired, subjecting the resulting product to hydrolysis.The compounds of the general formula (I) exert antiphlogistic effects and can be used in the therapy for the treatment of inflammations.