Splitting up pyran rings
    2.
    发明授权
    Splitting up pyran rings 失效
    分离吡喃环

    公开(公告)号:US4226810A

    公开(公告)日:1980-10-07

    申请号:US964137

    申请日:1978-11-28

    CPC分类号: C07C45/60

    摘要: A chemical method for splitting the pyran ring of compounds such as 2,6,6-trimethyl-5,6-dihydro-4H-pyran is disclosed which consists in reacting the 4H-pyran derivatives concerned with water and a halogen-containing or halogen-donating catalyst at a comparatively low temperature, i.e. from 50.degree. C. to 130.degree. C. Interesting results are obtained and a selection field is afforded as regards the products of the pyran-ring cleavage.

    摘要翻译: 公开了一种用于分离诸如2,6,6-三甲基-5,6-二氢-4H-吡喃的化合物的吡喃环的化学方法,该方法包括使涉及水的4H-吡喃衍生物与含卤素或卤素 在相对较低的温度,即50℃至130℃下进行催化。获得有意义的结果,并且就吡喃环切割的产物提供选择领域。

    Novel hypocholesterolemic resin
    3.
    发明授权
    Novel hypocholesterolemic resin 失效
    新型低胆固醇血症树脂

    公开(公告)号:US4198395A

    公开(公告)日:1980-04-15

    申请号:US800526

    申请日:1977-05-25

    申请人: Renato De Simone

    发明人: Renato De Simone

    摘要: A novel microporous resin which is useful in the treatment of hyperchloesterolemia. This resin is comprised of a cross-linked polystyrene matrix and is characterized by active moieties selected from among methylamino, methylammonium or a combination of methylamino and methylammonium groups. The porosity of this resin is capable of absorbing and retaining bile salts having an average diameter of 150-200 Angstrom units.

    摘要翻译: 一种新型的微孔树脂,可用于治疗高氯乙烯醚类炎症。 该树脂由交联聚苯乙烯基质组成,其特征在于选自甲基氨基,甲基铵或甲基氨基和甲基铵基团的组合的活性部分。 该树脂的孔隙率能够吸收和保留平均直径为150-200埃的胆汁盐。