Beta crystal form of leonurine hydrochloride as well as preparation method and application of beta crystal form

A technology of leonurine hydrochloride and beta crystal form, which is applied in the field of leonurine hydrochloride beta crystal form and its preparation, can solve problems such as no reports on the research on leonurine hydrochloride crystal form, and achieves the effect of good stability

Inactive Publication Date: 2018-07-13
旌德新星生物科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] However, there is no report on the cry

Method used

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  • Beta crystal form of leonurine hydrochloride as well as preparation method and application of beta crystal form
  • Beta crystal form of leonurine hydrochloride as well as preparation method and application of beta crystal form
  • Beta crystal form of leonurine hydrochloride as well as preparation method and application of beta crystal form

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Embodiment 1

[0039] Embodiment 1 Preparation of Leonurine Hydrochloride β Crystal Form

[0040] Add 10g of motherwortine hydrochloride to 100ml of ethanol, heat to dissolve, then add 0.2g of activated carbon, heat to reflux for 0.5 hours, filter while hot, add 300ml of acetone to the filtrate, cool to 5°C at a rate of 1°C / min, and stand for 6h to precipitate The crystals were filtered after the crystallization was complete, the filtrate was recovered and used mechanically, the obtained crystals were combined, and dried under reduced pressure at 60° C. to obtain a white solid, which was the β-crystal form of motherwortine hydrochloride, with a weight of 8.3 g and a yield of 83%.

[0041] X-ray powder diffraction, infrared spectroscopy and DSC were used to characterize the β-crystal form of motherurine hydrochloride. The result is as Figure 1~3 and shown in Table 1.

[0042] Table 1 X-ray diffraction analysis data of β-crystal form of leonurine hydrochloride

[0043] serial numb...

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Abstract

The invention discloses a beta crystal form of leonurine hydrochloride as well as a preparation method and application of the beta crystal form. Stronger diffraction peaks displayed in a powder X-raydiffraction pattern expressed by diffraction angles 2theta are 11.630 (54 percent), 11.990 (21 percent), 14.420 (18 percent), 22.430 (21 percent), 23.330 (19 percent), 24.710 (16 percent) and 25.670 (100 percent). The beta crystal form of the leonurine hydrochloride, which is prepared with the preparation method disclosed by the invention, has the characteristic of high stability, can keep stableunder conditions of high illumination, high temperature, high humidity and long-time storage, and can be used for preparing a drug composition.

Description

technical field [0001] The invention relates to the technical field of medicinal chemistry, in particular to a β-crystal form of leonurine hydrochloride and a preparation method and application thereof. Background technique [0002] Motherwort is the fresh or dry aerial part of Motherwort (Leonurus Japonicus Houtt) of Labiatae. Bitter and slightly cold in nature, it returns to the liver and pericardium meridians; it has the effects of active blood stasis regulating, diuresis and swelling reduction, and is clinically used for the treatment of irregular menstruation, postpartum stasis, blood diseases, and cardiovascular and cerebrovascular diseases. It is known as "sacred medicine" and "good recipe for economic production". [0003] Leonurine (Leonurine) is one of the main active substances of Motherwort. It has significant effects of directly expanding peripheral blood vessels, increasing blood flow, and anti-platelet aggregation. It can effectively reduce blood viscosity an...

Claims

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Application Information

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IPC IPC(8): C07C279/08C07C277/08A61K31/235A61P7/02A61P9/00A61P9/10A61P15/00
CPCC07C279/08C07B2200/13C07C277/08
Inventor 徐自奥李德刚李晓祥
Owner 旌德新星生物科技有限公司
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