METHOD AND APPARATUS FOR THE SYNTHESIS OF DIHYDROARTEMISININ AND ARTEMISININ DERIVATIVES
    4.
    发明申请
    METHOD AND APPARATUS FOR THE SYNTHESIS OF DIHYDROARTEMISININ AND ARTEMISININ DERIVATIVES 有权
    合成二氢TEM IN嗪和TEM IS嗪衍生物的方法与装置

    公开(公告)号:US20160145265A1

    公开(公告)日:2016-05-26

    申请号:US14904671

    申请日:2014-07-14

    CPC classification number: C07D493/18 B01J19/245 B01J2219/24

    Abstract: The present invention is directed to a method for continuous production of dihydroartemisinin and also artemisinin derivatives derived from dihydroartemisinin by using artemisinin or dihydroartemisinic acid (DHAA) as starting material as well as to a continuous flow reactor for producing dihydroartemisinin as well as the artemisinin derivatives. It was found that the reduction of artemisinin to dihydroartemisinin in a continuous process requires a special kind of reactor and a special combination of reagents comprising a hydride reducing agent, at least one activator such as an inorganic activator, at least one solid base, at least one aprotic solvent and at least one C1-C5 alcohol.

    Abstract translation: 本发明涉及通过使用青蒿素或二氢青蒿酸(DHAA)作为起始原料以及用于生产二氢青蒿素的连续流动反应器以及青蒿素衍生物,连续制备二氢青蒿素和源自二氢青蒿素的青蒿素衍生物的方法。 发现在连续方法中将青蒿素还原成二氢青蒿素需要特殊类型的反应器,并且包含氢化物还原剂,至少一种活化剂如无机活化剂,至少一种固体碱的试剂的特殊组合至少 一种非质子溶剂和至少一种C1-C5醇。

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