会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明专利
    • 6-fluoromethyl-í¸ and í¸-3-oxo-steroids
    • GB1063921A
    • 1967-04-05
    • GB5194664
    • 1964-12-21
    • BRITISH DRUG HOUSES LTD
    • ELLIS BERNARDFEATHER PETERMACBRIDE HUGHPETROW VLADIMIR
    • C07J1/00C07J5/00C07J71/00C07J75/00
    • 6 - Fluoromethyl - D 4,6 and D 1,4,6 - 3 - oxosteroids, some of which are novel, are prepared by treating 6 - hydroxymethyl - D 4,6 - 3 - oxosteroids with a fluorinating agent and, if desired, dehydrogenating. The preferred fluorinating agent is 2-chloro-1,1,2-trifluorotriethylamine. The steroids are preferably of the pregnane or androstane series or their 19-norderivatives and may contain in the 11-position a b -OH or keto group, in the 9-position a fluorine atom, in the 16-position =CH2, CH3, CN, CH2OH, a halogen, =CH.CH3 or =CHX or CH2X (wherein X is a halogen), in the 17-position the group b -COCH2R (wherein R is H, OH, O acyl or a halogen) with or without a 17a -R1 group (wherein R1 is OH, O acyl or alkyl) or a 16a ,17a -methylenedioxy group containing one or two alkyl or aryl groups or wherein the methylene group is part of a cycloalkyl ring, or in the 17b -position the group OH or O acyl. They may additionally contain D 9(11)- or D 16-double bonds. A large number of other optional substituents are also referred to, as described in Specification 1,030,885. 17a - Ethyl - 6 - hydroxymethyl - pregna - 4,6-diene-3,20-dione is prepared by reacting 17a -ethyl - 3 - methoxy - pregna - 3,5 - dien - 20-one with the Vilsmeier reagent to give 17a -ethyl - 6 - formyl - 3 - methoxy - pregna - 3,5-dien - 20 - one, reducing this to 17a - ethyl - 6-hydroxymethyl - 3 methoxypregna - 3,5 - dien-20 - one and reacting this with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone. Reference has been directed by the Comptroller to Specification 961,249.ALSO:Pharmaceutical compositions comprise 6-fluoromethyl-3-oxo-D 4,6 and D 1,4,6-steroids of the androstane, 19-nor-androstane, pregnane and 19-nor-pregnane series and carriers. They may also contain an estrogen, and may show a large variety of steroidal properties. Tablets containing 17a - acetoxy - 6 - fluoromethyl-16-methylenepregna-4,6-diene-3,20-dione and ethynylestradiol and an emulsified ointment containing 21-acetoxy-6-fluoromethyl-17a - hydroxy -pregna-4,6-diene-3,11,20-trione are described and other standard formulations are referred to.