Application of cerebroside B compound
A technology of cerebrosides and compounds, which is applied in the field of preparation of drugs for the treatment of post-ischemic brain injury, can solve problems such as separation and purification difficulties, and achieve significant therapeutic effects, high purity, and the effect of reducing the size of cerebral infarction
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Embodiment 1
[0033] The method for preparing cerebroside A and cerebroside B from Gallus pilosulae, the concrete steps are:
[0034] (1) Grinding: Grinding the dried sample of Gallinarum albuminosa (1.5 kg) (Yanyuan County, Sichuan Province) to 100-10 meshes;
[0035] (2) Solvent extraction: put the pulverized Gallus firji into a 15-liter container, and use methanol (7.5 L) to vibrate and leach in a shaker for 3 days to obtain the extract of Gallinarum gallinarum (151.3 g); Then, solvent partition the extract with 90% aq. MeOH and n-hexane. Concentrate the obtained 90% aq. MeOH solution and perform solvent partition with water and n-butanol. The n-butanol solution is concentrated under reduced pressure to obtain n-butanol layer sample (16.0 g);
[0036] (3) Separation and purification: use an ODS open column for n-butanol layer samples (the solvent system is MeOH:H 2 O=90:10, 95:5, 100:0); then, the sample containing the target compound (95% aq. MeOH fraction, 1.3 g) was separated on a S...
Embodiment 2
[0039] The physicochemical characteristics and the qualitative identification of chemical structure of cerebroside A and cerebroside B that embodiment 1 obtains:
[0040] Physicochemical properties of cerebroside A: [α] 25 D+ 4.5 (c 0.46, MeOH); Infrared spectrum (KBr) values: 3371, 2921, 2853, 1643, 1536, 1468, and 1081 cm-1; m / z ( 73.46), 71.20 (71.17), 70.81 (70.71), 70.25 (70.20), 68.86, 61.33 (61.21), 53.04 (53.00, CH-ND-), 39.90, 34.53, 32.23, 31.736, 28.194, 94 , 27.38, 24.61, 22.14, 15.83, and 13.95.
[0041] Cerebroside B: The chemical structure of cerebroside B was determined using the same method as the chemical structure of cerebroside A, and it was found that the structure (including the three-dimensional structure) of cerebroside B and A differs only in that B is in the fatty chain There are two more methylene groups than A. Physicochemical properties of cerebroside B: [α] 25 D + 2.0 (c 0.46, MeOH), m / z 756 (M+H)+, the infrared spectrum value and chemica...
Embodiment 3
[0043] Cerebroside A of the present invention ( JNGZ-A) and cerebroside B ( JNGZ-B) Animal pharmacology experiments were carried out to prove its application in the preparation of drugs for treating post-ischemic brain injury.
[0044] The degree of neurological damage due to different forms of cerebral ischemia varies. The main pathological manifestations of middle cerebral artery occlusion are infarction and cerebral edema in the striatum, cerebral cortex, and hippocampus, which have a very high mortality and disability rate. Global cerebral ischemia selectively damages central nervous cells sensitive to hypoxia (such as nerve cells in the CA1 area of the hippocampus), resulting in memory loss. Therefore, the present invention will use the classic middle cerebral artery occlusion (middle cerebral artery occlusion, MCAO) operation to simulate stroke, and use the vertebral artery and common carotid artery clipping operation to establish an animal model of global cerebral...
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