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Liu J, Li J, Yi D, Liu Y, Liu R, Xue Y, Huang Q, Liu S, Jiang Y. Non-derivatization strategy for the comprehensive characterization of neutral monosaccharide isomers and neutral disaccharide isomers using hydrophilic interaction liquid chromatography coupled to quadrupole/time-of-flight mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2021; 1185:122972. [PMID: 34700132 DOI: 10.1016/j.jchromb.2021.122972] [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: 06/14/2021] [Revised: 09/29/2021] [Accepted: 09/30/2021] [Indexed: 10/20/2022]
Abstract
Monosaccharide isomers and disaccharide isomers widely exist in nature, playing a key role in a number of important biological processes. However, due to high structural similarity and high polarity, the characterization of monosaccharide isomers, disaccharide isomers, as well as the analysis of monosaccharide composition of polysaccharides by a method that does not require derivatization is an ongoing challenge. Herein, we proposed a simple method for rapid discrimination of non-derivatized neutral monosaccharide, and disaccharide isomers using hydrophilic interaction liquid chromatography coupled to quadrupole/time-of-flight mass spectrometry (HILIC-Q/TOF-MS). In this work, we optimized the experimental parameters, and detailed approaches to discriminate the precursor ions, deprotonated ions, and fragment ions are proposed, as well. To discriminate the various ions, the retention times, the relative abundance (RA) of precursor ions and fragment ions at different collision energies, the relative abundance ratio (RAR) of fragment ions to deprotonated ions or precursor ions were considered for characterization of neutral monosaccharide and disaccharide isomers. Finally, this strategy was successfully applied to analyzing the monosaccharide composition of neutral disaccharides, polysaccharides, and an aqueous extract of Moringa oleifera seeds. The experimental results revealed that the HILIC-Q/TOF-MS is an effective and convenient strategy for rapid differentiation of monosaccharide isomers and disaccharide isomers, which may serve as a general platform for the analysis of neutral polysaccharides, food, medicinal plants, and herbs.
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Affiliation(s)
- Jing Liu
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha 410008, China; Institute of Hospital Pharmacy, Central South University, Changsha 410008, China; Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Jing Li
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha 410008, China; Institute of Hospital Pharmacy, Central South University, Changsha 410008, China; Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Dan Yi
- Drug Clinical Trial Center, Zhuzhou Central Hospital, Zhuzhou, China
| | - Yanyang Liu
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha 410008, China; Institute of Hospital Pharmacy, Central South University, Changsha 410008, China; Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Rong Liu
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha 410008, China; Institute of Hospital Pharmacy, Central South University, Changsha 410008, China; Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Ying Xue
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha 410008, China; Institute of Hospital Pharmacy, Central South University, Changsha 410008, China; Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Qi Huang
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha 410008, China; Institute of Hospital Pharmacy, Central South University, Changsha 410008, China; Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Shao Liu
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha 410008, China; Institute of Hospital Pharmacy, Central South University, Changsha 410008, China; Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China.
| | - Yueping Jiang
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha 410008, China; Institute of Hospital Pharmacy, Central South University, Changsha 410008, China; Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China.
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Campbell MT, Chen D, Glish GL. Distinguishing Linkage Position and Anomeric Configuration of Glucose–Glucose Disaccharides by Water Adduction to Lithiated Molecules. Anal Chem 2018; 90:2048-2054. [DOI: 10.1021/acs.analchem.7b04162] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Matthew T. Campbell
- Department of Chemistry,
Caudill Laboratories, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Dazhe Chen
- Department of Chemistry,
Caudill Laboratories, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Gary L. Glish
- Department of Chemistry,
Caudill Laboratories, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
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Zhu Y, Yang Z, Rodgers MT. Influence of Linkage Stereochemistry and Protecting Groups on Glycosidic Bond Stability of Sodium Cationized Glycosyl Phosphates. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2017; 28:2602-2613. [PMID: 28924832 DOI: 10.1007/s13361-017-1780-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 08/05/2017] [Accepted: 08/08/2017] [Indexed: 06/07/2023]
Abstract
Energy-resolved collision-induced dissociation (ER-CID) experiments of sodium cationized glycosyl phosphate complexes, [GP x +Na]+, are performed to elucidate the effects of linkage stereochemistry (α versus β), the geometry of the leaving groups (1,2-cis versus 1,2-trans), and protecting groups (cyclic versus non-cyclic) on the stability of the glycosyl phosphate linkage via survival yield analyses. A four parameter logistic dynamic fitting model is used to determine CID50% values, which correspond to the level of rf excitation required to produce 50% dissociation of the precursor ion complexes. Present results suggest that dissociation of 1,2-trans [GP x +Na]+ occurs via a McLafferty-type rearrangement that is facilitated by a syn orientation of the leaving groups, whereas dissociation of 1,2-cis [GPx+Na]+ is more energetic as it involves the formation of an oxocarbenium ion intermediate. Thus, the C1-C2 configuration plays a major role in determining the stability/reactivity of glycosyl phosphate stereoisomers. For 1,2-cis anomers, the cyclic protecting groups at the C4 and C6 positions stabilize the glycosidic bond, whereas for 1,2-trans anomers, the cyclic protecting groups at the C4 and C6 positions tend to activate the glycosidic bond. The C3 O-benzyl (3 BnO) substituent is key to determining whether the sugar or phosphate moiety retains the sodium cation upon CID. For 1,2-cis anomers, the 3 BnO substituent weakens the glycosidic bond, whereas for 1,2-trans anomers, the 3 BnO substituent stabilizes the glycosidic bond. The C2 O-benzyl substituent does not significantly impact the glycosidic bond stability regardless of its orientation. Graphical abstract ᅟ.
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Affiliation(s)
- Y Zhu
- Department of Chemistry, Wayne State University, Detroit, MI, 48202, USA
| | - Zhihua Yang
- Department of Chemistry, Wayne State University, Detroit, MI, 48202, USA
| | - M T Rodgers
- Department of Chemistry, Wayne State University, Detroit, MI, 48202, USA.
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Chai Y, Gao G, Shen S, Liu X, Lu C. Neutral losses of sodium benzoate and benzoic acid in the fragmentation of the [M + Na] + ions of methoxyfenozide and tebufenozide via intramolecular rearrangement in electrospray ionization tandem mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2017; 31:245-252. [PMID: 28110498 DOI: 10.1002/rcm.7785] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 11/02/2016] [Accepted: 11/02/2016] [Indexed: 06/06/2023]
Abstract
RATIONALE Electrospray ionization (ESI) tandem mass spectrometry can be applied to determine structural information about organic compounds. The [M + Na]+ ion is one of the major precursor ions in ESI mass spectrometry, but its fragmentation mechanism study is still insufficient. This study reveals the interesting fragmentation reactions of the [M + Na]+ ions of methoxyfenozide and tebufenozide. METHODS The fragmentations of the [M + Na]+ , [M + Li]+ , and [M + H]+ ions of methoxyfenozide and tebufenozide were studied using a hybrid quadrupole-orbitrap mass spectrometer and an ion trap mass spectrometer. A hydrogen/deuterium (H/D)-exchange experiment in the amide group of methoxyfenozide allowed for the confirmation of the fragmentation mechanism. Density functional theory (DFT) calculations were performed for a further understanding of the fragmentation mechanism of the [M + Na]+ ion of methoxyfenozide. RESULTS Neutral losses of sodium benzoate and benzoic acid in the fragmentation of the [M + Na]+ ions of methoxyfenozide and tebufenozide were observed as the major fragmentation pathways. In contrast, similar fragmentations were not observed or minor pathways in the fragmentation of the [M + Li]+ and [M + H]+ ions of methoxyfenozide and tebufenozide. In addition, a minor product ion resulting from loss of NaOH was identified, which was the first reported example in the fragmentation of sodiated compounds in mass spectrometry. CONCLUSIONS Losses of sodium benzoate and benzoic acid in the fragmentation of the [M + Na]+ ions of methoxyfenozide and tebufenozide are proposed to be formed through an intramolecular rearrangement reaction, which is supported by DFT calculations. An H/D-exchange experiment confirms that the carboxyl hydrogen of benzoic acid and the hydrogen of NaOH exclusively derive from the amide hydrogen of the precursor ion. This study enriches our knowledge on the Na+ -induced fragmentation reactions. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Yunfeng Chai
- Tea Research Institute, Chinese Academy of Agricultural Sciences, 9 South Meiling Road, Hangzhou, 310008, P.R. China
- Laboratory of Quality & Safety Risk Assessment for Tea (Hangzhou), Ministry of Agriculture, Hangzhou, 310008, P.R. China
| | - Guanwei Gao
- Tea Research Institute, Chinese Academy of Agricultural Sciences, 9 South Meiling Road, Hangzhou, 310008, P.R. China
- Laboratory of Quality & Safety Risk Assessment for Tea (Hangzhou), Ministry of Agriculture, Hangzhou, 310008, P.R. China
| | - Shanshan Shen
- Department of Chemistry, Zhejiang University, Hangzhou, 310027, P.R. China
| | - Xin Liu
- Tea Research Institute, Chinese Academy of Agricultural Sciences, 9 South Meiling Road, Hangzhou, 310008, P.R. China
- Laboratory of Quality & Safety Risk Assessment for Tea (Hangzhou), Ministry of Agriculture, Hangzhou, 310008, P.R. China
| | - Chengyin Lu
- Tea Research Institute, Chinese Academy of Agricultural Sciences, 9 South Meiling Road, Hangzhou, 310008, P.R. China
- Laboratory of Quality & Safety Risk Assessment for Tea (Hangzhou), Ministry of Agriculture, Hangzhou, 310008, P.R. China
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