Patent · US Active

High-purity magnesium lithospermate B and preparation method therefor

US10259798B2 · kind B2 · utility

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11Claims

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Inventors

Lijiang Xuan · Shanghai, CN
Yiping Wang · Beijing, CN
Weibin Song · Shanghai, CN
Chunguang Chen · Emmelshausen, DE
Dingxiang Li · Shanghai, CN
Xiaoyu Zhou · San Francisco, US
Yunlong Gu · Shanghai, CN
Liang Hu · Taipei, TW
Jing Zhao · Shanghai, CN
Wenwei Xu · Shanghai, CN
Shumei Wang · Foster City, US

Key dates

Filing date	Feb 9, 2015
Grant date	Apr 16, 2019
Priority date	—
Expiry date	Feb 9, 2035

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61P39/06
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The present invention relates to a method for preparing magnesium lithospermate B. The method is characterized in that: magnesium lithospermate B is extracted or purified from a Salvia miltiorrhiza plant material or a Salvia miltiorrhiza extract in the presence of an added magnesium salt. The present invention also relates to a high-purity magnesium lithospermate B product prepared by the method of the present invention, wherein the content of magnesium lithospermate B is more than 95% by weight.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.