Ling-li ZHU, Zhi-fu AI, Li XU, et al. Isolation and Identification of Chemical Constituents from Cinnamomi Ramulus[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(14): 173-178.
DOI:
Ling-li ZHU, Zhi-fu AI, Li XU, et al. Isolation and Identification of Chemical Constituents from Cinnamomi Ramulus[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(14): 173-178. DOI: 10.13422/j.cnki.syfjx.20190712.
Isolation and Identification of Chemical Constituents from Cinnamomi Ramulus
取干燥桂枝20 kg,粉碎后用75%乙醇冷浸提取,提取4次,7 d 1次,减压回收溶剂得到总浸膏。将所得总浸膏,运用D101大孔吸附树脂柱色谱进行分离,依次用水,30%乙醇,50%乙醇,70%乙醇,90%乙醇洗脱,减压回收溶剂得水部分,30%乙醇部分,50%乙醇部分,70%乙醇部分,90%乙醇部分。对30%乙醇部分,50%乙醇部分联合采用常压硅胶柱色谱,LH-20型羟丙基葡聚糖凝胶(Sephadex LH-20)柱色谱,高压制备色谱,重结晶等方法进行分离纯化,并根据单体化合物理化性质与波谱学数据(
The research group found in the early stage that the 75%alcohol extract of the Cinnamomi Ramulus had a significant physiological activity in inhibiting necroptosis by screening out the self-built sample library of 100 kinds of traditional Chinese medicines in Jiangxi. To identify the active components and find the target compounds
the 75%alcohol extracts of Cinnamomi Ramulus were isolated and studied systemically in chemistry.
Method:
2
The 20 kg dry Cinnamomi Ramulus was crushed into coarse powder
and extracted with 75%alcohol for four times
one time every 7 d. Then total extracts were obtained after solvent was recycled under decompression. The extract was separated by D101 macroporous resin column chromatography and eluted by water
30%ethanol
50%ethanol
70%ethanol
90%ethanol
so as to get the corresponding fraction finally. The compounds in the 30%ethanol and 50%ethanol fraction were isolated and purified by chromatography on silica gel
Sephadex LH-20 column and high pressure preparative chromatography
and their structures were determined according to physicochemical properties and spectral analysis.
Result and Conclusion:
2
Thirteen compounds were isolated and identified as (+ )-syringaresinol (1)
(+ )-lyoniresinol (2)
spicatolignan B (3)
(-)-secoisolariciresinol (4)
ovafolinin B (5)
protocatechualdehyde (6)
protocatechuic acid (7)
syringaldehyde (8)
vanillic acid (9)
ethyl protocatechuate (10)
syringic acid (11)
ethyl gallate (12)
2-(3′
4′-dihydroxyphenyl)-1
3-pepper ring-5-aldehyde (13). Compounds 1-5
10-13 were isolated from this plant for the first time.
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references
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