Effective components of Cacumen Platycladi and preparation method thereof
An effective component, the technology of oriental cypress leaves, is applied in the field of traditional Chinese medicine extracts for the treatment of tumor diseases, and can solve problems such as side effects and involvement of normal cells
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Embodiment 1
[0105] Example 1 Preparation of effective components of Platycladus orientalis leaves
[0106] The method for preparing the effective components of Platycladus orientalis leaves of the present invention includes the following steps: pulverizing the herbal medicines of Platycladus orientalis, adding ethyl acetate and ethanol (1:1), heating and refluxing for 1 hour, extracting twice, and combining the filtrate to obtain the extract; The extract was concentrated into an extract, dissolved in ethanol and loaded on the ODS-C18 column. First, 30% EtOH (5BV; 1BV≈250ml) was used as the mobile phase to obtain eluent I, and then changed to 95% EtOH (5BV) As the mobile phase, the eluent II is obtained, and the eluent II is concentrated and dried to obtain a sample; the sample obtained is continued to be separated by preparative liquid chromatography; the separation condition of the preparative chromatography: the chromatographic column is the preparative column ZorbaxSB-C18; 21.2mm× 250mm, t...
Embodiment 2
[0109] Example 2 Analysis of effective components of Platycladus orientalis leaves
[0110] HPLC-ELSD combined analysis of effective components of Platycladus orientalis leaves in Example 1
[0111] Chromatographic conditions Chromatographic column Agilent Zorbax SB-C18 column (4.6mm×150mm, 5μm); using gradient elution, mobile phase A phase is 0.2% glacial acetic acid aqueous solution, mobile phase B phase is acetonitrile solution containing 0.2% glacial acetic acid; gradient elution The procedure is as follows: at 0 minutes, mobile phase A is 90% 0.2% glacial acetic acid in water, mobile phase B is 10% 0.2% glacial acetic acid in acetonitrile; at 10 minutes, mobile phase A is 50% 0.2% glacial acetic acid The aqueous solution and mobile phase B are 50% 0.2% glacial acetic acid in acetonitrile; at 30 minutes, mobile phase A is 5% 0.2% glacial acetic acid in water, and mobile phase B is 95% 0.2% glacial acetic acid in acetonitrile; 35 At minutes, mobile phase A is 5% 0.2% glacial...
Embodiment 3
[0114] Example 3 Preparation of effective components of Platycladus orientalis leaves
[0115] Take the effective component 1 or 2 of Platycladus orientalis leaves of Example 1, mix 0.5g and 10.5g polyethylene glycol-6000 uniformly, heat and melt, transfer to drip irrigation after dissolving, and drop the medicine to 6-8℃ In the liquid paraffin, the oil was removed to prepare 400 drop pills.
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