INDUSTRIAL METHOD FOR THE SYNTHESIS OF 17-ACETOXY-LLβ-[4-(DIMETHYLAMINO)-PHENYL]-21-METHOXY-19-NORPREGNA-4,9-DIEN-3,20-DIONE AND THE KEY INTERMEDIATES OF THE PROCESS

The present invention relates to a process for the synthesis of the known 17-acetoxy-11-β-[4-(dimethylamino)-phenyl]-21-methoxy-19-norpregna-4, 9-dien-3,20-dione (further on CDB-4124) of formula (I) from 3,3-[1,2-etandiyl-bis(oxy)]-oestr-5(10),9(l l)-dien-17-one of formula (II). Compound CDB-4124 be...

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Main Authors SANTA CSABA, CSORGEI JANOS, MAHO SANDOR, ARANYI ANTAL, BALOGH GABOR, BODI JOZSEF, HORVATH ZOLTAN, TUBA ZOLTAN, SZELES JANOS, MOLNAR CSABA, TERDY LASZLO, VISKY GYORGY
Format Patent
LanguageEnglish
Korean
Published 07.04.2010
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Summary:The present invention relates to a process for the synthesis of the known 17-acetoxy-11-β-[4-(dimethylamino)-phenyl]-21-methoxy-19-norpregna-4, 9-dien-3,20-dione (further on CDB-4124) of formula (I) from 3,3-[1,2-etandiyl-bis(oxy)]-oestr-5(10),9(l l)-dien-17-one of formula (II). Compound CDB-4124 belongs to the group of anti-hormones. The process according to the invention is the following: i) formation of an epoxide on the double bond in position 5(10) of 3,3-[l,2-ethandiyl-bis(oxy)]-oestr-5(10),9(l l)-dien-17-one of formula (II) with hydrogen peroxide; ii) addition of hydrogen cyanide formed in situ on position 17 of the obtained 5,10α-epoxy-3,3-[l,2-ethandiyl-bis(oxy)]-5α-oestr-9(II)-en-17-one of formula (III); iii) silylation of the hydroxyl group in position 17 of the formed 5,10α-epoxy-3,3-[l,2-ethandiyl-bis(oxy)]-17α-hydroxy-5α-oestr-9(II)-en-17β-carbonitrile of formula (IV) with trimethyl chlorosilane; iv) reacting the obtained 5,10α-epoxy-3,3-[l,2-ethandiyl-bis(oxy)]-17-[trimethyl-silyl-oxy]-5α-oestr-9(II)-en-17β-carbonitrile of formula (V) with 4-(dimethylamino)-phenyl magnesium bromide Grignard reagent in the presence of CuCl (Teutsch reaction); v) silylation of the hydroxyl group in position 5 of the formed IIβ-[4-(dimethyl-amino)-phenyl]-3,3-[1,2-ethandiyl-bis(oxy)]-5-hydroxy-17α-[trimethylsilyl-(oxy)]-5α-oestr-9-en-17β-carbonitrile of formula (VI) with trimethyl chlorosilane; vi) reacting the obtained llβ-[4-(dimethylamino)-phenyl]-3,3-[l,2-ethandiyl-bis(oxy)]-5,17α-bis-[trimethyl-silyl-(oxy)]-5α-oestr-9-en-17β-carbonitrile of formula (VII) with diisobutyl aluminum hydride and after addition of acid to the reaction mixture; vii) methoxy-methylation of the obtained IIβ-[4-(dimethylamino)-phenyl]-3,3-[1,2-ethandiyl-bis(oxy)]-5, 17α-bis-[trimethyl-silyl-(oxy)]-5α-oestr-9-en-17β-carbaldehide of formula (VIII) with methoxy-methyl Grignard reagent formed in situ, while hydrolyzing the trimethylsilyl protective groups; viii) oxidation of the hydroxyl group in position 20 of the obtained 17,20ξ-dihydroxy-11β-[4-(dimemylarnino)-phenyl]-21-methoxy-19-norpregna-4, 9-dien-3-one of formula (IX) with dicyclohexyl carbodiimide in the presence of dimethyl sulfoxide and a strong organic acid (Swern oxidation), and in given case after purification by chromatography; ix) acetylation of the hydroxyl group in position 17 of the obtained 11β-[4-(dimethylamino)-phenyl]-17-hydroxy-21-methoxy-19-norpregna-4,9-dien-3,20-dione of formula (X) with acetic anhydride in the presence of perchloric acid, and in given case the obtained 7-acetoxy-11β-[4-(dimethylamino)-phenyl)]-21-methoxy-19-norpregna-4, 9-dien-3,20-dione of formula (I) is purified by chromatography. The invention also relates to the new intermediates of formula (VII) and (VIII). 본 발명은 하기 화학식(II)의 3,3-[1,2-에탄디일-비스(옥시)]-오에스트르-5(10),9(11)-디엔-17-온으로부터 하기 화학식(I)의 공지된 17-아세톡시-11β-[4-(디메틸아미노)-페닐]-21-메톡시-19-노르프레그나-4,9-디엔-3,20-디온 (CDB-4124)의 합성 방법에 관한 것이다: (I) (II) 화합물 CDB-4124는 항-호르몬 그룹에 속한다. 본 발명에 따른 방법은 다음과 같다: i) 화학식(II)의-[l,2-에탄디일- 비스(옥시)]-오에스트르-5(10),9(ll)-디엔-17-온의 위치 5(10) 중의 이중 결합 상에서 과산화수소와 에폭사이드를 형성하고; ii) 원래 자리에서 형성된 시안화수소를 상기 수득한 화학식(III)의 5,10α-에폭시-3,3-[1,2-에탄디일-비스(옥시)]-5α-오에스트르-9(11)-엔-17-온의 위치 17에 부가하며; iii) 형성된 화학식(IV)의 5,10α-에폭시-3,3-[1,2-에탄디일-비스(옥시)]-17α-히드록시-5α-오에스트르-9(11)-엔-17β-카르보니트릴의 위치 17에 있는 히드록실 기를 트리메틸 클로로실란을 사용하여 실릴화시키고; iv) 수득한 화학식(V)의 5,10α-에폭시-3,3-[1,2-에탄디일-비스(옥시)]-17-[트리메틸-실릴-옥시]-5α-오에스트르-9(11)-엔-17β-카르보니트릴을 CuCl 존재하에서 4-(디메틸아미노)-페닐 마그네슘 브로마이드 그리냐드 시약과 반응 (토이츄 반응)시키며; v) 형성된 화학식(VI)의 11β-[4-(디메틸-아미노)-페닐]-3,3-[1,2-에탄디일-비스(옥시)]-5-히드록시-17α-[트리메틸실릴-(옥시)]-5α-오에스트르-9-엔-17β-카르보니트릴의 위치 5에 있는 히드록실 기를 트리메틸 클로로실란을 사용하여 실릴화시키고; vi) 수득한 화학식(VII)의 11β-[4-(디메틸-아미노)-페닐]-3,3-[1,2-에탄디일-비스(옥시)]-5,17α-비스-[트리메틸실릴-(옥시)]-5α-오에스트르-9-엔-17β-카르보니트릴을 디이소부틸 알루미늄 히드리드와 반응시키고 그후 산을 반응 혼합물에 부가하고; vii) 수득한 화학식(VIII)의 11β-[4-(디메틸아미노)-페닐]-3,3-[1,2-에탄디일-비스(옥시)]-5,17α-비스-[트리메틸-실릴-(옥시)]-5α-오에스트르-9-엔-17β-카르브알데히드를 그자리에서 형성한 메톡시-메틸 그리냐드 시약을 사용하여 메톡시-메틸화시키면서, 트리메틸실릴 보호 기를 가수분해하며; viii) 수득한 화학식(IX)의 17,20ξ-디히드록시-11β-[4-(디메틸아미노)-페닐]-21-메톡시-19-노르프레그나-4,9-디엔-3-온의 위치 20에 있는 히드록실 기를 디메틸 설폭사이드 및 강한 유기 산 존재하에서 디시클로헥실 카르보디이미드를 사용하여 산화(스웨른 산화)시키고, 또 소정 경우에서 크로마토그래피에 의해 정제시키며; ix) 수득한 화학식(X)의 11β-[4-(디메틸아미노)-페닐]-17-히드록시-21-메톡시-19-노르프레그나-4,9-디엔-3,20-디온의 위치 17에 있는 히드록실 기를 과염소산 존재하에서 무수 아세트산을 사용하여 아세틸화시키고, 또 소정 경우에서 수득한 7-아세톡시-11β-[4-(디메틸아미노)-페닐]-21-메톡시-19-노르프레그나-4,9-디엔-3,20-디온을 크로마토그래피에 의해 정제함. 본 발명은 또한 화학식(VII) 및 (VIII)의 신규 중간체에도 관한 것이다.
Bibliography:Application Number: KR20097017565