1
|
Guo J, Li L, Liu Z, Zhou Y, Wang J, Yang Z. Multi-dimensional preparation of Thymus quinquecostatus Celak. by normal-phase flash chromatography coupled to counter-current chromatography. J Chromatogr A 2023; 1706:464238. [PMID: 37506459 DOI: 10.1016/j.chroma.2023.464238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/19/2023] [Accepted: 07/21/2023] [Indexed: 07/30/2023]
Abstract
In this study, a multi-dimensional chromatography system was developed by integrating normal-phase flash chromatography and counter-current chromatography to isolate flavonoids, phenylpropanoids, and thymol from the aerial parts of Thymus quinquecostatus Celak. In the online multi-dimensional switching system, a normal-phase flash chromatograph packed with 1.2 g of dry homogeneous silica gel mixture (containing 600 mg of methanol extract) was connected to counter-current chromatography via a six-port valve. Two two-dimensional separations were performed using n-heptane-ethyl acetate-methanol-water (6:4:6:4, v/v) and ethyl acetate-water solvent systems sequentially to separate the constituents of Thymus quinquecostatus Celak. The upper phase of the former solvent system was utilized as both elution solvent for flash chromatography and the stationary phase for counter-current chromatography, while the lower phase of the latter solvent system containing 10 mM trifluoroacetic acid was employed as elution solvent for flash chromatography and one mobile phase in pH gradient counter-current chromatography. Thymol (7) and xanthomicrol (8), two hydrophobic ingredients, were purified in the initial two-dimensional separation. The subsequent two-dimensional separation yielded six hydrophilic compounds, namely dihydrokaempferol-7-O-D-glucopyranoside (1), lithospermic acid (2), luteolin-7-O-glucuronide (3), rosmarinic acid (4), messerschmidin (5) and apigenin-7-O-D-glucuronide (6). This study represents the first documented use of online multi-dimensional normal-phase flash chromatography coupled to counter-current chromatography for separating constituents from Thymus quinquecostatus Celak.
Collapse
Affiliation(s)
- Jinxing Guo
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xiong Road, Yangling 712100, Shaanxi, China
| | - Luqi Li
- Life Science Research Core Services, Northwest A&F University, 22 Xiong Road, Yangling 712100, Shaanxi, China
| | - Zhuo Liu
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xiong Road, Yangling 712100, Shaanxi, China
| | - Yi Zhou
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xiong Road, Yangling 712100, Shaanxi, China
| | - Jinrong Wang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xiong Road, Yangling 712100, Shaanxi, China
| | - Zhi Yang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xiong Road, Yangling 712100, Shaanxi, China.
| |
Collapse
|
2
|
Wang X, Qiu Y, Wen H, Weng R, Chen D, Liu H. Separation and structural characterization of unknown impurity in vancomycin by two-dimensional preparative liquid chromatography, LC-MS and NMR. J Pharm Biomed Anal 2023; 232:115403. [PMID: 37120972 DOI: 10.1016/j.jpba.2023.115403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 04/17/2023] [Accepted: 04/17/2023] [Indexed: 05/02/2023]
Abstract
Vancomycin is an effective antibiotic used for the treatment of Gram-positive bacterial infections. During the analysis of vancomycin, an unknown impurity at the level of 0.5% was detected by high-performance liquid chromatography (HPLC). To characterize the structure of the impurity, a new two-dimensional preparative liquid chromatography (2D-Prep-LC) method was developed to separate the impurity from the vancomycin sample. After further analysis including liquid chromatography-mass spectrometry (LC-MS) and nuclear magnetic resonance (NMR) spectroscopy, the structure of the unknown impurity was identified as a vancomycin analog in which the N-Methyl-leucine residue on the side chain is replaced by an N-methylmethionine residue. In this study, we established a reliable and efficient method for separating and identifying vancomycin impurities, which will provide a valuable contribution to the field of pharmaceutical analysis and quality control.
Collapse
Affiliation(s)
- Xuantang Wang
- Shanghai Institute for Food and Drug Control, Shanghai 201203, China
| | - Ya Qiu
- Shanghai Institute for Food and Drug Control, Shanghai 201203, China
| | - Hongliang Wen
- Shanghai Institute for Food and Drug Control, Shanghai 201203, China
| | - Rongwen Weng
- Department of pharmacy, Fudan University, Shanghai 200433, China
| | - Dongying Chen
- Laboratory of Pharmaceutical Analysis, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Rd. Zuchongzhi, Shanghai 201203, China.
| | - Hao Liu
- Shanghai Institute for Food and Drug Control, Shanghai 201203, China.
| |
Collapse
|
3
|
Zhu LW, Xie BY, Liu SZ, Wu YH, Zhang GG, Qiu YK. Development of an On-Line Two-dimensional Normal Phase Liquid Chromatography System for Analysis of Weakly Polar Samples. Chromatographia 2023. [DOI: 10.1007/s10337-022-04230-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
|
4
|
Zhai Y, Li G, Peng K, Ge Z, Zhang W, Li D. Less Configuration and More Dimensionality: Preparative Heart-Cut Multidimensional Liquid Chromatography Based on Trapping Arrays. Anal Chem 2022; 94:16997-17002. [PMID: 36453024 DOI: 10.1021/acs.analchem.2c03875] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
The resolving power of multiple dimensional liquid chromatography (mD-LC) is multiplicative as it adds dimensions. However, the issue in creating a preparative mD-LC system is that the higher the dimensionality, the more complicated the system configuration. Thus, we presented a new configuration of preparative mD-LC using one set of LC modules and trapping array-based multiple heart-cut interfaces. A preparative two-dimensional liquid chromatography (2D-LC) separation of herbal medicine formulation produced 40 compounds with a purity of >90%. During the separation process, the interface stores the fractions and allocates positions for the fractions from a different dimension; LC draws the fraction from the interface, makes nD separation, and sends isolated fractions to the interface. By repeating this process, we achieved variable dimensionality of LC separations. We also presented a preparative 3D-LC separation of herbal medicines to validate the principle of "less configuration and more dimensionality". Thus, we can explore the higher dimensional preparative separations. The developed preparative mD-LC displayed exceptional power in the isolation of various compounds and has great potential in the application of natural products.
Collapse
Affiliation(s)
- Yulin Zhai
- College of Pharmaceutical Science, Soochow University, Suzhou 215123, People's Republic of China.,Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Guoli Li
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Kai Peng
- Soochow High Tech Chromatography Co., Ltd., Suzhou 2151213, People's Republic of China
| | - Zhaosong Ge
- Soochow High Tech Chromatography Co., Ltd., Suzhou 2151213, People's Republic of China
| | - Weibing Zhang
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Duxin Li
- College of Pharmaceutical Science, Soochow University, Suzhou 215123, People's Republic of China.,Soochow High Tech Chromatography Co., Ltd., Suzhou 2151213, People's Republic of China
| |
Collapse
|
5
|
Sheng Q, Wang L, Zhang L, Wang X, Qian S, Lan M, Qing G, Liang X. High-efficiency Two-dimensional Separation of Natural Products Based on β-Cyclodextrin Stationary Phase Working in Both Hydrophilic and Reversed Hydrophobic Modes. J Chromatogr A 2022; 1673:463069. [DOI: 10.1016/j.chroma.2022.463069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 03/09/2022] [Accepted: 04/14/2022] [Indexed: 10/18/2022]
|
6
|
Yang X, Liu Y, Chen T, Wang N, Li H, Zhao J, Li Y. HSCCC Separation of Three Main Compounds from the Crude Extract of Dracocephalum Tanguticum by Using Dimethyl Sulfoxide as Cosolvent. J Chromatogr Sci 2021; 59:175-181. [PMID: 33264388 DOI: 10.1093/chromsci/bmaa094] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Indexed: 11/13/2022]
Abstract
Separation of natural compounds directly from the crude extract is a challenging work for traditional column chromatography. In the present study, an efficient method for separation of three main compounds from the crude extract of Dracocephalum tanguticum has been successfully established by high-speed counter-current chromatography (HSCCC). The crude extract was directly introduced into HSCCC by using dimethyl sulfoxide as cosolvent. Ethyl acetate/n-butyl alcohol/0.3% glacial acetic acid (4: 1: 5, v/v) system was used and three target compounds with purity higher than 80% were obtained. Preparative HPLC was used for further purification and three target compounds with purity higher than 98% were obtained. The compounds were identified as chlorogenic acid, pedaliin and pedaliin-6″-acetate.
Collapse
Affiliation(s)
- Xue Yang
- Qinghai Key Laboratory of Tibetan Medicine Pharmacology and Safety Evaluation, Northwest Institute of Plateau Biology, Chinese Academy of Science, 52 Sanlihe Rd Xining 810001, P.R. China.,Savaid Medical School, University of the Chinese Academy of Sciences, 19B Yuquan Road, Beijing 100049, P.R. China
| | - Yongling Liu
- Food and Pharmaceutical Engineering Institute, Guiyang University, 103 Jianlongdong Rd, Guiyang 550005, P.R. China
| | - Tao Chen
- Qinghai Key Laboratory of Tibetan Medicine Pharmacology and Safety Evaluation, Northwest Institute of Plateau Biology, Chinese Academy of Science, 52 Sanlihe Rd Xining 810001, P.R. China
| | - Nana Wang
- Qinghai Key Laboratory of Tibetan Medicine Pharmacology and Safety Evaluation, Northwest Institute of Plateau Biology, Chinese Academy of Science, 52 Sanlihe Rd Xining 810001, P.R. China.,Savaid Medical School, University of the Chinese Academy of Sciences, 19B Yuquan Road, Beijing 100049, P.R. China
| | - Hongmei Li
- Qinghai Key Laboratory of Tibetan Medicine Pharmacology and Safety Evaluation, Northwest Institute of Plateau Biology, Chinese Academy of Science, 52 Sanlihe Rd Xining 810001, P.R. China
| | - Jingyang Zhao
- Qinghai Key Laboratory of Tibetan Medicine Pharmacology and Safety Evaluation, Northwest Institute of Plateau Biology, Chinese Academy of Science, 52 Sanlihe Rd Xining 810001, P.R. China
| | - Yulin Li
- Qinghai Key Laboratory of Tibetan Medicine Pharmacology and Safety Evaluation, Northwest Institute of Plateau Biology, Chinese Academy of Science, 52 Sanlihe Rd Xining 810001, P.R. China
| |
Collapse
|
7
|
Wang X, Zhao S, Wang C, Du W, Sun H, Sun W, Jin Y, Zuo G, Tong S. Orthogonality in the selection of biphasic solvent systems for off-line two-dimensional countercurrent chromatography from Polygonum cuspidatum Sieb. et Zucc. J Chromatogr A 2020; 1634:461666. [PMID: 33197846 DOI: 10.1016/j.chroma.2020.461666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 10/26/2020] [Accepted: 10/28/2020] [Indexed: 12/23/2022]
Abstract
Off-line two-dimensional countercurrent chromatography has been widely applied to the isolation of complex samples, but little research on the investigation of orthogonality in the selection of biphasic solvent systems is available. In the present work, the orthogonality in the selection of a biphasic solvent system for liquid-liquid chromatographic separation of aqueous extract and ether extract from the traditional Chinese medicinal plant Polygonum cuspidatum Sieb. et Zucc was evaluated by the correlation coefficient and space occupancy rate. In total, 25 different biphasic solvent systems were tested, and 313 system combinations were analysed. A convex hull methodology was used to determine the separation space and to optimize separation conditions. The correlation coefficient matrix was transformed into dendrograms and a colour map to visualize the dissimilarity between, and orthogonality for, all solvent systems. The aqueous extracts from Polygonum cuspidatum were separated using selected biphasic solvent systems with high orthogonality: ethyl acetate-ethanol-water (70:1:70, v/v) and petroleum ether-ethyl acetate-water (1:5:5, v/v). The ether extracts from Polygonum cuspidatum were also separated using selected biphasic solvent systems with high orthogonality: petroleum-ethyl acetate-methanol-aqueous 0.25 M NH3•H2O (5:5:5:5, v/v) and petroleum-ethyl acetate-methanol-water (5:5:5:5, v/v). Thirteen compounds were successfully obtained. The experimental results demonstrated that the evaluation of orthogonality provided an alternative strategy to select an applicable solvent system for the separation of complex samples using off-line two-dimensional countercurrent chromatography.
Collapse
Affiliation(s)
- Xiang Wang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Shanshan Zhao
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Chaoyue Wang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Wei Du
- Institute of Engineering Biology and Health, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Hengmian Sun
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Wenyu Sun
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Yang Jin
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Guanglei Zuo
- Department of Food Science and Nutrition, Hallym University, 1 Hallymdeahak-gil, Chuncheon, 24252, Republic of Korea
| | - Shengqiang Tong
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, China.
| |
Collapse
|
8
|
Zhuang L, Ding Y, Ma F, Li J, M SM, Xiao W, Wang Z, Zhu J. A novel online preparative high-performance liquid chromatography system with the multiple trap columns-valve switch technique for the rapid and efficient isolation of main flavonoids from Epimedium koreanum Nakai. J Sep Sci 2020; 44:656-665. [PMID: 33151025 DOI: 10.1002/jssc.202000783] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 10/17/2020] [Accepted: 11/02/2020] [Indexed: 11/11/2022]
Abstract
In this work, a new online preparative high-performance liquid chromatography was developed for the fast and efficient separation of complex chemical mixtures from natural products. This system integrates two chromatographic systems into an online automatic separation system using the technique of multiple trap columns with valve switching. The sample was first separated into 18 subfractions in the online preparative high-performance liquid chromatography, and the sample eluents were then diluted and captured online on 18 trap columns by the multiple trap columns technique, respectively. Each subfraction retained on the trap column was transferred online to the separation column for the second separation. Finally, the target compounds were purified by appropriate separation conditions and multiple heart-cutting strategies. Importantly, the system was successfully used to separate 18 high-purity flavonoids from the crude extract of Epimedium koreanum Nakai online in one step. The entire separation time was approximately 20 h, and the structures were characterized by the high-performance liquid chromatography quadrupole time-of-flight tandem mass spectrometry and nuclear magnetic resonance. This online preparative high-performance liquid chromatography system represents an efficient and rapid separation system that has the potential for a wide array of applications in the separation of complex chemical components from natural products.
Collapse
Affiliation(s)
- Linwu Zhuang
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, P. R. China
| | - Yan Ding
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, P. R. China.,Institute of Chemistry and Applications of Plant Resources, Dalian Polytechnic University, Dalian, P. R. China
| | - Fenglian Ma
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, P. R. China
| | - Jinliu Li
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, P. R. China
| | - Safian Murad M
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, P. R. China
| | - Wei Xiao
- Jiangsu Kanion Pharmaceutical Co. Ltd, Lianyungang, P. R. China
| | - Zhenzhong Wang
- Jiangsu Kanion Pharmaceutical Co. Ltd, Lianyungang, P. R. China
| | - Jingbo Zhu
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, P. R. China.,Institute of Chemistry and Applications of Plant Resources, Dalian Polytechnic University, Dalian, P. R. China
| |
Collapse
|
9
|
|
10
|
Wang X, Zhao S, Wang C, Sun W, Jin Y, Gong X, Tong S. Off‐line comprehensive two‐dimensional reversed‐phase countercurrent chromatography with high‐performance liquid chromatography: Orthogonality in separation of
Polygonum cuspidatum
Sieb. et Zucc. J Sep Sci 2019; 43:561-568. [DOI: 10.1002/jssc.201900877] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 10/06/2019] [Accepted: 10/29/2019] [Indexed: 12/11/2022]
Affiliation(s)
- Xiang Wang
- College of Pharmaceutical ScienceZhejiang University of Technology Hangzhou 310032 P. R. China
| | - Shanshan Zhao
- College of Pharmaceutical ScienceZhejiang University of Technology Hangzhou 310032 P. R. China
| | - Chaoyue Wang
- College of Pharmaceutical ScienceZhejiang University of Technology Hangzhou 310032 P. R. China
| | - Wenyu Sun
- College of Pharmaceutical ScienceZhejiang University of Technology Hangzhou 310032 P. R. China
| | - Yang Jin
- College of Pharmaceutical ScienceZhejiang University of Technology Hangzhou 310032 P. R. China
| | - Xingchu Gong
- Pharmaceutical Informatics Institute, College of Pharmaceutical SciencesZhejiang University Hangzhou 310023 P. R. China
| | - Shengqiang Tong
- College of Pharmaceutical ScienceZhejiang University of Technology Hangzhou 310032 P. R. China
| |
Collapse
|
11
|
Lv W, Shi X, Wang S, Xu G. Multidimensional liquid chromatography-mass spectrometry for metabolomic and lipidomic analyses. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2018.11.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
12
|
Marlot L, Batteau M, Faure K. Comparison between centrifugal partition chromatography and preparative liquid chromatography as first dimensions in off-line two-dimensional separation: Application to the isolation of multi-targeted compounds from Edelweiss plant. Electrophoresis 2018; 39:2011-2019. [PMID: 29513903 DOI: 10.1002/elps.201800032] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 02/15/2018] [Accepted: 02/16/2018] [Indexed: 12/28/2022]
Abstract
Preparative two-dimensional chromatography is gaining interest in the elucidation of complex samples as it allows the recovery of a large number of molecules without the risks inherent to tedious multi-step sample preparation. While the second dimension is often selected to be liquid chromatography, it may be of interest to compare the specificities of two different techniques, namely liquid chromatography and centrifugal partition chromatography, to be used as first dimension. A fair comparison between off-line CPCxLC and prepLCxLC in selective comprehensive mode for preparative purposes is carried out in this study, illustrated by the isolation of five compounds from high-value Edelweiss plant. The method development of each configuration is achieved on laboratory scale instruments. The quality of separation is compared using 2D-contour plots. The prepLCxLC exhibits a large separation space that leads to an overall large peak capacity, which is of great interest for complex samples. But its limited loading capacity involves a large number of 2 D runs increasing the running costs for preparative purposes. On the other hand, CPCxLC provides a low peak capacity due to the poor efficiency provided by CPC. However, this liquid-liquid technique can be finely tuned to generate a high selectivity, decreasing the number of runs necessary to produce a limited number of target solutes.
Collapse
Affiliation(s)
- Léa Marlot
- Université de Lyon, CNRS, Université Claude Bernard Lyon 1, ENS de Lyon, Institut des Sciences Analytiques, Villeurbanne, France
| | - Magali Batteau
- Université de Lyon, CNRS, Université Claude Bernard Lyon 1, ENS de Lyon, Institut des Sciences Analytiques, Villeurbanne, France
| | - Karine Faure
- Université de Lyon, CNRS, Université Claude Bernard Lyon 1, ENS de Lyon, Institut des Sciences Analytiques, Villeurbanne, France
| |
Collapse
|
13
|
Zhang YQ, Wang SS, Han C, Xu JF, Luo JG, Kong LY. Online hyphenation of extraction, Sephadex LH-20 column chromatography, and high-speed countercurrent chromatography: A highly efficient strategy for the preparative separation of andrographolide from Andrographis paniculata
in a single step. J Sep Sci 2017; 40:4865-4871. [DOI: 10.1002/jssc.201700704] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 10/09/2017] [Accepted: 06/02/2017] [Indexed: 12/29/2022]
Affiliation(s)
- Ying-Qi Zhang
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines; China Pharmaceutical University; Nanjing P. R. China
| | - Shan-Shan Wang
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines; China Pharmaceutical University; Nanjing P. R. China
| | - Chao Han
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines; China Pharmaceutical University; Nanjing P. R. China
| | - Jin-Fang Xu
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines; China Pharmaceutical University; Nanjing P. R. China
| | - Jian-Guang Luo
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines; China Pharmaceutical University; Nanjing P. R. China
| | - Ling-Yi Kong
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines; China Pharmaceutical University; Nanjing P. R. China
| |
Collapse
|
14
|
Wang YQ, Tang X, Li JF, Wu YL, Sun YY, Fang MJ, Wu Z, Wang XM, Qiu YK. Development of an on-line mixed-mode gel liquid chromatography×reversed phase liquid chromatography method for separation of water extract from Flos Carthami. J Chromatogr A 2017; 1519:145-151. [PMID: 28886939 DOI: 10.1016/j.chroma.2017.08.053] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 05/25/2017] [Accepted: 08/20/2017] [Indexed: 02/02/2023]
Abstract
A novel on-line comprehensive two-dimensional liquid chromatography (2D-LC) method by coupling mixed-mode gel liquid chromatography (MMG-LC) with reversed phase liquid chromatography (RPLC) was developed. A mixture of 17 reference compounds was used to study the separation mechanism. A crude water extract of Flos Carthami was applied to evaluate the performance of the novel 2D-LC system. In the first dimension, the extract was eluted with a gradient of water/methanol over a cross-linked dextran gel Sephadex LH-20 column. Meanwhile, the advantages of size exclusion, reversed phase partition and adsorption separation mechanism were exploited before further on-line reversed phase purification on the second dimension. This novel on-line mixed-mode Sephadex LH-20×RPLC method provided higher peak resolution, sample processing ability (2.5mg) and better orthogonality (72.9%) versus RPLC×RPLC and hydrophilic interaction liquid chromatography (HILIC)×RPLC. To the best of our knowledge, this is the first report of a mixed-mode Sephadex LH-20×RPLC separation method with successful applications in on-line mode, which might be beneficial for harvesting targets from complicated medicinal plants.
Collapse
Affiliation(s)
- Yu-Qing Wang
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China
| | - Xu Tang
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography State Oceanic Administration, Xiamen 361005, China
| | - Jia-Fu Li
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China
| | - Yun-Long Wu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China
| | - Yu-Ying Sun
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China
| | - Mei-Juan Fang
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China
| | - Zhen Wu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China
| | - Xiu-Min Wang
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China.
| | - Ying-Kun Qiu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China.
| |
Collapse
|
15
|
Marlot L, Batteau M, Escofet MC, Nuccio S, Coquoin V, De Vaumas R, Faure K. Two-dimensional multi-heart cutting centrifugal partition chromatography–liquid chromatography for the preparative isolation of antioxidants from Edelweiss plant. J Chromatogr A 2017; 1504:55-63. [DOI: 10.1016/j.chroma.2017.04.056] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 04/25/2017] [Accepted: 04/26/2017] [Indexed: 10/19/2022]
|
16
|
Preparative two dimensional separations involving liquid–liquid chromatography. J Chromatogr A 2017; 1494:1-17. [DOI: 10.1016/j.chroma.2017.03.031] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 03/15/2017] [Accepted: 03/16/2017] [Indexed: 01/17/2023]
|
17
|
Rodríguez C, Rollins-Smith L, Ibáñez R, Durant-Archibold AA, Gutiérrez M. Toxins and pharmacologically active compounds from species of the family Bufonidae (Amphibia, Anura). JOURNAL OF ETHNOPHARMACOLOGY 2017; 198:235-254. [PMID: 28034659 DOI: 10.1016/j.jep.2016.12.021] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 12/12/2016] [Accepted: 12/14/2016] [Indexed: 05/25/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Among amphibians, 15 of the 47 species reported to be used in traditional medicines belong to the family Bufonidae, which demonstrates their potential in pharmacological and natural products research. For example, Asian and American tribes use the skin and the parotoid gland secretions of some common toads in the treatment of hemorrhages, bites and stings from venomous animals, skin and stomach disorders, as well as several types of cancers. OVERARCHING OBJECTIVE In addition to reviewing the occurrence of chemical constituents present in the family Bufonidae, the cytotoxic and biomedical potential of the active compounds produced by different taxa are presented. METHODOLOGY Available information on bioactive compounds isolated from species of the family Bufonidae was obtained from ACS Publications, Google, Google Scholar, Pubmed, Sciendirect and Springer. Papers written in Chinese, English, German and Spanish were considered. RESULTS Recent reports show more than 30% of amphibians are in decline and some of bufonid species are considered to be extinct. For centuries, bufonids have been used as traditional folk remedies to treat allergies, inflammation, cancer, infections and other ailments, highlighting their importance as a prolific source for novel drugs and therapies. Toxins and bioactive chemical constituents from skin and parotid gland secretions of bufonid species can be grouped in five families, the guanidine alkaloids isolated and characterized from Atelopus, the lipophilic alkaloids isolated from Melanophryniscus, the indole alkaloids and bufadienolides known to be synthesized by species of bufonids, and peptides and proteins isolated from the skin and gastrointestinal extracts of some common toads. Overall, the bioactive secretions of this family of anurans may have antimicrobial, protease inhibitor and anticancer properties, as well as being active at the neuromuscular level. CONCLUSION In this article, the traditional uses, toxicity and pharmacological potential of chemical compounds from bufonids have been summarized. In spite of being reported to be used to treat several diseases, neither extracts nor metabolites from bufonids have been tested in such illness like acne, osteoporosis, arthritis and other illnesses. However, the cytotoxicity of these metabolites needs to be evaluated on adequate animal models due to the limited conditions of in vitro assays. Novel qualitative and quantitative tools based on MS spectrometry and Nuclear Magnetic Resonance spectroscopy is now available to study the complex secretions of bufonids.
Collapse
Affiliation(s)
- Candelario Rodríguez
- Centro de Biodiversidad y Descubrimiento de Drogas, Instituto de Investigaciones, Científicas y Servicios de Alta Tecnología (INDICASAT-AIP), City of Knowledge, Panama 0843-01103, Republic of Panama; Department of Biotechnology, Acharya Nagarjuna University, Guntur 522510, India
| | - Louise Rollins-Smith
- Department of Pathology, Microbiology, and Immunology, and Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, TN 37232, USA; Department of Biological Sciences, Vanderbilt University, Nashville, TN 37235, USA
| | - Roberto Ibáñez
- Smithsonian Tropical Research Institute, Ancon, Panama 0843-03092, Republic of Panama; Department of Zoology, College of Natural, Exact Sciences and Technology, University of Panama, Republic of Panama
| | - Armando A Durant-Archibold
- Centro de Biodiversidad y Descubrimiento de Drogas, Instituto de Investigaciones, Científicas y Servicios de Alta Tecnología (INDICASAT-AIP), City of Knowledge, Panama 0843-01103, Republic of Panama; Department of Biochemistry, College of Natural, Exact Sciences and Technology, University of Panama, Republic of Panama.
| | - Marcelino Gutiérrez
- Centro de Biodiversidad y Descubrimiento de Drogas, Instituto de Investigaciones, Científicas y Servicios de Alta Tecnología (INDICASAT-AIP), City of Knowledge, Panama 0843-01103, Republic of Panama.
| |
Collapse
|
18
|
Li JF, Yan X, Wu YL, Fang MJ, Wu Z, Qiu YK. Comprehensive two-dimensional normal-phase liquid chromatography × reversed-phase liquid chromatography for analysis of toad skin. Anal Chim Acta 2017; 962:114-120. [PMID: 28231875 DOI: 10.1016/j.aca.2017.01.038] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Revised: 01/19/2017] [Accepted: 01/22/2017] [Indexed: 12/31/2022]
Abstract
An analytical two-dimensional normal-phase liquid chromatography × reversed-phase liquid chromatography (2D NPLC × RPLC) system was constructed with a newly developed thermal evaporation assisted adsorption (TEAA) interface. This novel TEAA interface with heating temperature above solvent boiling point allowed fast removal of organic NPLC solvent and successfully solved the solvent incompatibility problem between NPLC and RPLC. The system achieved rapid on-line solvent exchange between the two dimensions within a short modulation time of 190 s and was applied in the analysis of an extract from the skin of Bufo bufo gargarizans. This is the first time to realize the on-line comprehensive analysis of a moderate polar natural product by coupling NPLC with reversed phase ultra-high performance liquid chromatography (UHPLC). To be highlighted, with the TEAA interface, the 2D NPLC × RPLC system provided excellent resolution and orthogonality (75.2%), when compared with that of 2D RPLC × RPLC.
Collapse
Affiliation(s)
- Jia-Fu Li
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China
| | - Xia Yan
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China
| | - Yun-Long Wu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China
| | - Mei-Juan Fang
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China
| | - Zhen Wu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China
| | - Ying-Kun Qiu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China.
| |
Collapse
|
19
|
Ma R, Zhou R, Tong R, Shi S, Chen X. At-line hyphenation of high-speed countercurrent chromatography with Sephadex LH-20 column chromatography for bioassay-guided separation of antioxidants from vine tea (Ampelopsis grossedentata). J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1040:112-117. [PMID: 27978465 DOI: 10.1016/j.jchromb.2016.11.037] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Revised: 11/14/2016] [Accepted: 11/28/2016] [Indexed: 12/25/2022]
Abstract
Vine tea (Ampelopsis grossedentata), a widely used healthy tea, beverage and herbal medicine, exhibited strong antioxidant activity. However, systematic purification of antioxidants, especially for those with similar structures or polarities, is a challenging work. Here, we present a novel at-line hyphenation of high-speed countercurrent chromatography with Sephadex LH-20 column chromatography (HSCCC-Sephadex LH-20 CC) for rapid and efficient separation of antioxidants from vine tea target-guided by 1,1-diphenyl-2-picryl-hydrazyl radical-high performance liquid chromatography (DPPH-HPLC) experiment. A makeup pump, a six-port switching valve and a trapping column were served as interface. The configuration had no operational time and mobile phase limitations between two dimensional chromatography and showed great flexibility without tedious sample-handling procedure. Seven targeted antioxidants were firstly separated by stepwise HSCCC using petroleum ether-ethyl acetate-methanol-water (4:9:4:9, v/v/v/v) and (4:9:5:8, v/v/v/v) as solvent systems, and then co-eluted antioxidants were on-line trapped, concentrated and desorbed to Sephadex LH-20 column for further off-line purification by methanol. It is noted that six elucidated antioxidants with purity over 95% exhibited stronger activity than ascorbic acid (VC). More importantly, this at-line hyphenated strategy could sever as a rapid and efficient pathway for systematic purification of bioactive components from complex matrix.
Collapse
Affiliation(s)
- Ruyi Ma
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China
| | - Rongrong Zhou
- Food Science and Technology Program, Beijing Normal University-Hongkong Baptist University United International College, Zhuhai 519085, PR China
| | - Runna Tong
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China
| | - Shuyun Shi
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China.
| | - Xiaoqing Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China
| |
Collapse
|
20
|
Yan X, Wang LJ, Wu Z, Wu YL, Liu XX, Chang FR, Fang MJ, Qiu YK. New on-line separation workflow of microbial metabolites via hyphenation of analytical and preparative comprehensive two-dimensional liquid chromatography. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1033-1034:1-8. [PMID: 27517521 DOI: 10.1016/j.jchromb.2016.07.053] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 07/29/2016] [Accepted: 07/31/2016] [Indexed: 01/17/2023]
Abstract
Microbial metabolites represent an important source of bioactive natural products, but always exhibit diverse of chemical structures or complicated chemical composition with low active ingredients content. Traditional separation methods rely mainly on off-line combination of open-column chromatography and preparative high performance liquid chromatography (HPLC). However, the multi-step and prolonged separation procedure might lead to exposure to oxygen and structural transformation of metabolites. In the present work, a new two-dimensional separation workflow for fast isolation and analysis of microbial metabolites from Chaetomium globosum SNSHI-5, a cytotoxic fungus derived from extreme environment. The advantage of this analytical comprehensive two-dimensional liquid chromatography (2D-LC) lies on its ability to analyze the composition of the metabolites, and to optimize the separation conditions for the preparative 2D-LC. Furthermore, gram scale preparative 2D-LC separation of the crude fungus extract could be performed on a medium-pressure liquid chromatograph×preparative high-performance liquid chromatography system, under the optimized condition. Interestingly, 12 cytochalasan derivatives, including two new compounds named cytoglobosin Ab (3) and isochaetoglobosin Db (8), were successfully obtained with high purity in a short period of time. The structures of the isolated metabolites were comprehensively characterized by HR ESI-MS and NMR. To be highlighted, this is the first report on the combination of analytical and preparative 2D-LC for the separation of microbial metabolites. The new workflow exhibited apparent advantages in separation efficiency and sample treatment capacity compared with conventional methods.
Collapse
Affiliation(s)
- Xia Yan
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China
| | - Li-Juan Wang
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China
| | - Zhen Wu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China
| | - Yun-Long Wu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China
| | - Xiu-Xiu Liu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China
| | - Fang-Rong Chang
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan, China
| | - Mei-Juan Fang
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China.
| | - Ying-Kun Qiu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China.
| |
Collapse
|
21
|
Li JF, Fang H, Yan X, Chang FR, Wu Z, Wu YL, Qiu YK. On-line comprehensive two-dimensional normal-phase liquid chromatography×reversed-phase liquid chromatography for preparative isolation of toad venom. J Chromatogr A 2016; 1456:169-75. [DOI: 10.1016/j.chroma.2016.06.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Revised: 05/13/2016] [Accepted: 06/02/2016] [Indexed: 10/21/2022]
|
22
|
XIE XM, SUN WY, HUANG JY, Polachi N, TONG L, SUN GX. Preparative High Performance Liquid Chromatography-based Multidimensional Chromatography and Its Application in Traditional Chinese Medicine. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2016. [DOI: 10.1016/s1872-2040(16)60946-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
23
|
Recent Development in Counter-current Chromatography. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2016. [DOI: 10.1016/s1872-2040(16)60908-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
24
|
Potential of Online Comprehensive Two-Dimensional Liquid Chromatography For Micro-Preparative Separations of Simple Samples. Chromatographia 2015. [DOI: 10.1007/s10337-015-3012-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
25
|
Russo M, Dugo P, Marzocco S, Inferrera V, Mondello L. Multidimensional preparative liquid chromatography to isolate flavonoids from bergamot juice and evaluation of their anti-inflammatory potential. J Sep Sci 2015; 38:4196-203. [DOI: 10.1002/jssc.201500878] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 09/15/2015] [Accepted: 10/05/2015] [Indexed: 01/15/2023]
Affiliation(s)
- Marina Russo
- “Scienze del Farmaco e Prodotti per la Salute” Department; University of Messina; Messina Italy
- Chromaleont s.r.l., c/o “Scienze del Farmaco e Prodotti per la Salute” Department; University of Messina; Messina Italy
| | - Paola Dugo
- “Scienze del Farmaco e Prodotti per la Salute” Department; University of Messina; Messina Italy
- Chromaleont s.r.l., c/o “Scienze del Farmaco e Prodotti per la Salute” Department; University of Messina; Messina Italy
- University Campus Bio-Medico of Rome; Rome Italy
| | - Stefania Marzocco
- Department of Pharmacy; University of Salerno; Fisciano Salerno Italy
| | - Veronica Inferrera
- “Scienze del Farmaco e Prodotti per la Salute” Department; University of Messina; Messina Italy
| | - Luigi Mondello
- “Scienze del Farmaco e Prodotti per la Salute” Department; University of Messina; Messina Italy
- Chromaleont s.r.l., c/o “Scienze del Farmaco e Prodotti per la Salute” Department; University of Messina; Messina Italy
- University Campus Bio-Medico of Rome; Rome Italy
| |
Collapse
|
26
|
Chen WB, Li SQ, Chen LJ, Fang MJ, Chen QC, Wu Z, Wu YL, Qiu YK. Online polar two phase countercurrent chromatography×high performance liquid chromatography for preparative isolation of polar polyphenols from tea extract in a single step. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 997:179-86. [DOI: 10.1016/j.jchromb.2015.06.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 04/03/2015] [Accepted: 06/12/2015] [Indexed: 10/23/2022]
|
27
|
Wang D, Chen LJ, Liu JL, Wang XY, Wu YL, Fang MJ, Wu Z, Qiu YK. On-line two-dimensional countercurrent chromatography×high performance liquid chromatography system with a novel fragmentary dilution and turbulent mixing interface for preparation of coumarins from Cnidium monnieri. J Chromatogr A 2015; 1406:215-23. [PMID: 26129983 DOI: 10.1016/j.chroma.2015.06.034] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Revised: 06/06/2015] [Accepted: 06/14/2015] [Indexed: 10/23/2022]
Abstract
This study describes a novel on-line two-dimensional countercurrent chromatography×high performance liquid chromatography (2D CCC×HPLC) system for one-step preparative isolation of coumarins from the fruits of Cnidium monnieri. An optimal biphasic solvent system composed of n-heptane/acetone/water (31:50:19, v/v) with suitable Kd values and a higher retention of the stationary phase was chosen to separate target compounds. In order to address the solvent incompatibility problem between CCC and RP-HPLC, a novel fragmentary dilution and turbulent mixing (FD-TM) interface was successfully developed. In detail, the eluent from the first dimensional CCC column was divided into fractions to form 'sample-dilution' stripes in the two switching sample loops, by the dilution water from the makeup pump. Following this, a long, thin tube was applied to mix the CCC eluent with water by in-tube turbulence, to reduce the solvent effect. Each CCC fraction was alternately trapped on the two holding columns for further preparative HPLC separation. This nationally designed FD-TM strategy effectively reduced post-column pressure and allowed a higher water dilution ratio at the post end of CCC, leading to improved sample recovery and a robust 2D CCC×HPLC isolation system. As a result, in a single 2D separation run (6.5h), eight target compounds (1-8) were isolated from 0.5g crude extract of C. monnieri, in overall yields of 1.3, 2.0, 0.5, 0.5, 0.8, 1.5, 8.2, and 15.0%, with HPLC purity of 90.1, 91.1, 94.7, 99.1, 99.2, 98.2, 97.9, and 91.9%, respectively. We anticipate that this improved 2D CCC×HPLC system, based on the novel FD-TM interface, has broad application for simultaneous isolation and purification of multiple components from other complex plant-derived natural products.
Collapse
Affiliation(s)
- Dong Wang
- School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China
| | - Long-Jiang Chen
- School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China
| | - Jing-Lan Liu
- School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China
| | - Xin-Yuan Wang
- School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China
| | - Yun-Long Wu
- School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China
| | - Mei-Juan Fang
- School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China
| | - Zhen Wu
- School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China
| | - Ying-Kun Qiu
- School of Pharmaceutical Sciences, Xiamen University, South Xiang-An Road, Xiamen, 361102, China.
| |
Collapse
|
28
|
On-line comprehensive two-dimensional normal-phase liquid chromatography × reversed-phase liquid chromatography for preparative isolation of Peucedanum praeruptorum. J Chromatogr A 2015; 1387:60-8. [PMID: 25704769 DOI: 10.1016/j.chroma.2015.02.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Revised: 01/30/2015] [Accepted: 02/02/2015] [Indexed: 11/20/2022]
Abstract
A new on-line comprehensive preparative two-dimensional normal-phase liquid chromatography × reversed-phase liquid chromatography (2D NPLC × RPLC) system was developed for the separation of complicated natural products. It was based on the use of a silica gel packed medium-pressure column as the first dimension and an ODS preparative HPLC column as the second dimension. The two dimensions were connected with normal-phase (NP) and reversed-phase (RP) enrichment units, involving a newly developed airflow assisted adsorption (AAA) technique. The instrument operation and the performance of this NPLC × RPLC separation method were illustrated by gram-scale isolation of ethanol extract from the roots of Peucedanum praeruptorum. In total, 19 compounds with high purity were obtained via automated multi-step preparative separation in a short period of time using this system, and their structures were comprehensively characterized by ESI-MS, (1)H NMR, and (13)C NMR. Including two new compounds, five isomers in two groups with identical HPLC and TLC retention values were also obtained and identified by 1D NMR and 2D NMR. This is the first report of an NPLC × RPLC system successfully applied in an on-line preparative process. This system not only solved the interfacing problem of mobile-phase immiscibility caused by NP and RP separation, it also exhibited apparent advantages in separation efficiency and sample treatment capacity compared with conventional methods.
Collapse
|
29
|
Liu JL, Wang XY, Zhang LL, Fang MJ, Wu YL, Wu Z, Qiu YK. Two-dimensional countercurrent chromatography × high performance liquid chromatography with heart-cutting and stop-and-go techniques for preparative isolation of coumarin derivatives from Peucedanum praeruptorum Dunn. J Chromatogr A 2014; 1374:156-163. [DOI: 10.1016/j.chroma.2014.11.053] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2014] [Revised: 11/19/2014] [Accepted: 11/19/2014] [Indexed: 10/24/2022]
|
30
|
Li Y, Wang N, Zhang M, Ito Y, Zhang H, Wang Y, Guo X, Hu P. Development of a method to extract and purify target compounds from medicinal plants in a single step: online hyphenation of expanded bed adsorption chromatography and countercurrent chromatography. Anal Chem 2014; 86:3373-9. [PMID: 24588208 DOI: 10.1021/ac4035955] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Pure compounds extracted and purified from natural sources are crucial to lead discovery and drug screening. This study presents a novel two-dimensional hyphenation of expanded bed adsorption chromatography (EBAC) and high-speed countercurrent chromatography (HSCCC) for extraction and purification of target compounds from medicinal plants in a single step. The EBAC and HSCCC were hyphenated via a six-port injection valve as an interface. Fractionation of ingredients of Salvia miltiorrhiza and Rhizoma coptidis was performed on the hyphenated system to verify its efficacy. Two compounds were harvested from Salvia miltiorrhiza, one was 52.9 mg of salvianolic acid B with an over 95% purity and the other was 2.1 mg of rosmarinic acid with a 74% purity. Another two components were purified from Rhizoma coptidis, one was 4.6 mg of coptisine with a 98% purity and one was 4.1 mg of berberine with a 82% purity. The processing time was nearly 50% that of the multistep method. The results indicate that the present method is a rapid and green way to harvest targets from medicinal plants in a single step.
Collapse
Affiliation(s)
- Yang Li
- School of Chemistry and Molecular Engineering, East China University of Science and Technology , Shanghai 200237, China
| | | | | | | | | | | | | | | |
Collapse
|