Intermediates in the synthesis of
17.beta.-acyl-3-carboxy-androsta-3,5-dienes
    8.
    发明授权
    Intermediates in the synthesis of 17.beta.-acyl-3-carboxy-androsta-3,5-dienes 失效
    合成17β-酰基-3-羧基 - 雄甾-3,5-二烯的中间体

    公开(公告)号:US5075450A

    公开(公告)日:1991-12-24

    申请号:US630361

    申请日:1990-12-18

    IPC分类号: C07J9/00 C07J41/00 C07J43/00

    摘要: New intermediates in the synthesis of 17.beta.-acyl-3-carboxy-androsta-3,5-dienes, of the formula: ##STR1## wherein R.sup.2 is 2-thiopyridyl, andR.sup.3 is C.sub.2 -C.sub.4 alkoxycarbonyl, C.sub.1 -C.sub.4, or trifluoromethylsulfonyloxy. The above compounds are useful intermediates in producing testosterone 5.alpha.-reductase inhibitors which are useful topically for treatment of acne, seborrhea, female hirsutism, and systemically in treatment of benign prostatic hypertrophy.

    摘要翻译: 合成17β-酰基-3-羧基 - 雄甾-3,5-二烯的新中间体,其结构如下:其中R 2是2-硫代吡啶基,R 3是C 2 -C 4烷氧基羰基,C 1 -C 4或 三氟甲磺酰氧基。 上述化合物是生产睾酮5α-还原酶抑制剂的有用中间体,其可用于局部用于治疗痤疮,皮脂溢,女性多毛症,并且全身治疗良性前列腺肥大。

    6-Amidino-9-substituted benzyl purines
    9.
    发明授权
    6-Amidino-9-substituted benzyl purines 失效
    6-脒基-9-取代的苄基嘌呤

    公开(公告)号:US4407802A

    公开(公告)日:1983-10-04

    申请号:US306112

    申请日:1981-09-28

    CPC分类号: C07D473/00

    摘要: This invention is concerned with 6-(substituted amidino-9-substituted benzyl purine derivatives and in particular 6-(aminomethylideneamino)-9-substituted benzyl purines. The compounds are active anticoccidial agents and suitable compositions and methods are described for the administration of such compounds to poultry for the prevention and treatment of coccidiosis.

    摘要翻译: 本发明涉及6-(取代的脒基-9取代的苄基嘌呤衍生物,特别是6-(氨基亚甲基氨基)-9-取代的苄基嘌呤。这些化合物是活性抗球虫剂,并且描述了适用的组合物和方法, 化合物用于家禽预防和治疗球虫病。

    Novel process for the preparation of N.sup.6 -alkyl-arprinocid
    10.
    发明授权
    Novel process for the preparation of N.sup.6 -alkyl-arprinocid 失效
    用于制备N6-烷基-Arprinocid的新方法

    公开(公告)号:US4361699A

    公开(公告)日:1982-11-30

    申请号:US305804

    申请日:1981-09-28

    IPC分类号: C07D473/34 C07D473/00

    CPC分类号: C07D473/00

    摘要: This invention is concerned with a novel process for the preparation of N.sup.6 -alkyl-arprinocid (6-alkyl-amino-9-substituted benzyl purines). Such compounds are active anticoccidial agents. The process involves the preparation of a Schiff base from an acetal of dialkylformamide and reduction with a metal hydride.

    摘要翻译: 本发明涉及一种制备N6-烷基 - 丙氨蝶呤(6-烷基 - 氨基-9-取代的苄基嘌呤)的新方法。 这些化合物是活性抗球虫剂。 该方法包括从二烷基甲酰胺的缩醛制备席夫碱并用金属氢化物还原。