HIGH PENETRATION PRODRUG COMPOSITIONS OF MUSTARDS AND MUSTARD-RELATED COMPOUNDS

    公开(公告)号:US20190233367A1

    公开(公告)日:2019-08-01

    申请号:US16209744

    申请日:2018-12-04

    发明人: Chongxi YU Lina XU

    摘要: The invention provides compositions of novel high penetration compositions (HPC) or high penetration prodrugs (HPP) of mustards and mustard-related compounds, which are capable of crossing biological barriers with high penetration efficiency. The HPPs are capable of being converted to parent active drugs or drug metabolites after crossing the biological barrier and thus can render treatments for the conditions that the parent drugs or metabolites can. Additionally, the HPPs are capable of reaching areas that parent drugs may not be able to access or to render a sufficient concentration at the target areas and therefore render novel treatments. The HPPs can be administered to a subject through various administration routes, e.g., locally delivered to an action site of a condition with a high concentration or systematically administered to a biological subject and enter the general circulation with a faster rate.

    Preparation of purified phosphorodiamidite

    公开(公告)号:US09896463B2

    公开(公告)日:2018-02-20

    申请号:US15110971

    申请日:2015-01-15

    申请人: RHODIA OPERATIONS

    发明人: Gary Woodward

    IPC分类号: C07F9/02 C07F9/24

    摘要: The instant invention relates to a method of phosphorodiamidite production that comprises: (E1) preparing a purified solution of a dialkylamine in a polar solvent as follows: —the dialkylamine dissolved in a polar solvent is contacted with a quantity of phosphorus trihalide that is sufficient to react with the alcohol impurities contained in the dialkylamine but sufficiently low to leave a major part of the dialkylamine unreacted, whereby a mixture is obtained that contains the dialkylamine in the polar solvent and reaction products of the impurities with the phosphorous trihalide; —the unreacted dialkylamine and polar solvent present in the mixture obtained in step (E1.1.) are extracted from the solution S by their difference of volatility, typically by distillation, whereby the purified solution of the dialkylamine in the polar solvent is obtained; (E2) the purified solution of dialkylamine in a polar solvent as obtained in step (E1) is reacted with a phosphorus trihalide, whereby an intermediate compound is formed; (E3) the intermediate compound obtained in step (E2) is reacted with a hydroxyalkyl compound in the presence of a non-polar co-solvent.