2015
DOI: 10.1016/j.jchromb.2014.12.020
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Isolation of isochlorogenic acid isomers in flower buds of Lonicera japonica by high-speed counter-current chromatography and preparative high performance liquid chromatography

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Cited by 33 publications
(24 citation statements)
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“…Although some authors have reported high purities (>90%) using HSCCC , this type of separations frequently require a pre‐separation step employing macroporous resins when the crude extracts are complex . In addition, HPLC is orthogonal and complementary to HSCCC, and can often provide straightforward resolution of otherwise difficult separations by HSCCC . However, when considering these comparisons it should be noted that there is room for further optimization of both methodologies, in terms of both throughput and efficiency.…”
Section: Resultsmentioning
confidence: 99%
“…Although some authors have reported high purities (>90%) using HSCCC , this type of separations frequently require a pre‐separation step employing macroporous resins when the crude extracts are complex . In addition, HPLC is orthogonal and complementary to HSCCC, and can often provide straightforward resolution of otherwise difficult separations by HSCCC . However, when considering these comparisons it should be noted that there is room for further optimization of both methodologies, in terms of both throughput and efficiency.…”
Section: Resultsmentioning
confidence: 99%
“…The chemical structures of isolated compounds were elucidated unequivocally through ESIMS and NMR and also all spectroscopic data were in agreement with respective published data. [16][17][18][19] Compound 1 ( .0 (C-6′ and C-6"), 125.6 (C-1'), 125.7 (C-1"), 145.0 (C-7′ and C-7″), 145.6 (C-3′ and C-3″), 148.3 (C-4'), 148.4 (C-4"), 165.0 (C-9"), 166.0 (C-9'), unobserved signals (C-1 and C-7). Hz, H-7'); 13 C-NMR (data from HSQC and HMBC spectra, DMSO-d6) δ (ppm): 37.1 (C-2), 37.5 (C-6), 66.3 (C-3), 67.7 (C-5), 73.3 (C-4), 73.6 (C-1), 113.6 (C-8"), 113.9 (C-8'), 114.9 (C-2' and C-2"), 115.9 (C-5' and C-5″), 121.5 (C-6' and C-6″), 125.5 (C-1' and C-1"), 145.6 (C-7′ and C-7″), 145.6 (C-3′ and C-3″), 148.5 (C-4' and C-4"), 165.6 (C-9"), 166.1 (C-9'), 174.8 (C-7).…”
Section: The Structural Identification Of the Compoundsmentioning
confidence: 99%
“…The injection-volume was 50 μL and the flow-rate was kept at 1.0 ml/min. The standardization of HS-r or HS-sd was carried out at 254 nm [7].…”
Section: Etrusca Extracts and Rp-hplc Standardizationmentioning
confidence: 99%