Preparation method of total diterpenoids of stellera chamaejasme L. and application of total diterpenoids in medicine preparation
A technology of Ruixiang lupus venom and total diterpenes, applied in the directions of antiviral agents, organic chemistry, etc., can solve the problems of serious grassland damage and inability to realize polycyclic structures in chemical synthesis pathways, and achieves low toxicity, strong anti-HIV activity, The effect of simple enrichment methods
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Embodiment 1
[0017] Embodiment 1: small test enrichment method of daphne-type diterpenes
[0018] Dry and pulverize the Rhizoma chamaejasma root to obtain the Rhizoma chamaejasma powder; Weigh the Rhizoma chamaejasma powder (5kg), add 10L of 95% ethanol to heat and extract 3 times, filter, combine the filtrates obtained three times, concentrate the filtrate, and evaporate to dryness to obtain Ethanol extract 500g (DFC-GYSL-T), the ethanol extract (490g) is dispersed in 2L of water, then extracted with 2L of cyclohexane, extracted 4 times, combined with the extracts of 4 times of gained cyclohexane, Concentrate and evaporate to dryness to obtain 40g of cyclohexane part (DFC-GYSL-H), subject the cyclohexane part (40g) to vacuum column chromatography, and use cyclohexane: acetone (10:1, 3:1, 1:1 ) was eluted to obtain three components, namely DFC-GYSL-H1 (24g), DFC-GYSL-H2 (2g), and DFC-GYSL-H3 (8g). DFC-GYSL-H2 (2g) was subjected to Sephadex LH-20 gel column chromatography, eluted with cycl...
Embodiment 2
[0019] Example 2: Pilot-scale enrichment method for daphne-type diterpenes
[0020] Dry and pulverize the root of Rhizoma chamaejasma, get Rhizoma chamaejasma powder; weigh the powder of Rhizoma chamaejasma (10kg), add 60L 95% ethanol, extract 6 times with flash extractor, each time for 1.5min, filter and combine 6 times The resulting filtrate was concentrated and evaporated to dryness to obtain 1466.8 g of ethanol extract (DFC-GYSL-E). Disperse the ethanol extract (1460g) in 4.5L of water, then extract with 4.5L of petroleum ether, extract 5 times, combine the extracts of petroleum ether parts obtained 5 times, concentrate and evaporate to dryness, and obtain 118.0g of petroleum ether parts (DFC- GYSL-P), the petroleum ether part was mixed with 118g of silica gel, subjected to decompression column chromatography, eluted with petroleum ether: acetone (10:1, 3:1, 1:1), collected once per 500mL, and combined 1-35, 36-48, 49-58 bottles, to obtain 3 components, namely DFC-GYSL-P1...
Embodiment 3
[0021] Example 3: Determination of the content of main active ingredients in each sample obtained by the enrichment method
[0022] Get the key active components DFC-GYSL-H, DFC-GYSL-H2, DFC-GYSL-H23, DFC-GYSL-H24, DFC-GYSL-P, DFC-GYSL-P2, DFC-GYSL-P23 and DFC-GYSL-P24 were made into samples of about 0.5 mg / mL respectively, and the main active ingredients in each sample were analyzed by UPLC-MS method, stelleralide C (C1), subtoxin A (C2), huratoxin (C3 ), wikstrolide B (C4) carry out content determination; The method for content determination adopts standard curve method, and liquid chromatography condition is: 0~2min, acetonitrile: water (53:47~56:44); 2~32min acetonitrile: water ( 56:44); 32~35min, acetonitrile:water (56:44~71:29); 35~50min, acetonitrile:water (71:29~100:0); flow rate 0.3mL / min; column temperature 25℃; The detection wavelength is 233nm; the content of each sample is shown in Table 1 below.
[0023] Table 1 The yield of each sample in the enrichment proces...
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