Su‐Ping Bai

Xinxiang Medical University

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Jixia Zhang

Shanxi Medical University

Yong-Liang Yuan

China Pharmaceutical University

Huijuan Liang

Inner Mongolia University of Technology

Zhi‐An He

Shanghai Jiao Tong University

Dandan Ye

Hainan University

Hau-Yee Fung

Hong Kong Baptist University

Xing-Ke Ma

Chengdu University of Technology

Tin-Long Wong

Hong Kong Baptist University

Quan‐Bin Han

Sichuan Agricultural University

Quanwei Zhang

Jiangnan University

Cooperative Institutions

Xinxiang Medical University

Hong Kong Baptist University

Chinese Academy of Sciences

Tianjin University

Central South University

Chinese Academy of Medical Sciences & Peking Union Medical College

Chinese University of Hong Kong

Zhengzhou University

University of Chinese Academy of Sciences

Fudan University

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ChemInform Abstract: A New Ent‐Kaurane Diterpenoid from Isodon nervosus.

ChemInform (2009)

Fulin Yan ChunMing Wang Guo LanQing JiXia Zhang Su‐Ping Bai

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

10.1002/chin.200905201

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Oligosaccharide analysis of the backbone structure of the characteristic polysaccharide of Dendrobium officinale

Food Hydrocolloids (2022)

Tin-Long Wong Lifeng Li Jixia Zhang Quanwei Zhang Xueting Zhang

The backbone of Dendrobium officinale polysaccharide (DOP) was reported to be glucomannan. But the dispute continues due to the limitation of conventional analysis methods (e.g., the overlapped NMR signals). Herein, we describe an oligosaccharide sequencing analysis that successfully corrects the backbone to mannan. This analysis involves producing oligosaccharide fragments from mild acid hydrolysis of DOP followed by p-aminobenzoic ethyl ester (ABEE) derivatization. Then, a series of oligosaccharides with varied polymerization degrees (DP = 2–10) were isolated and identified by LC-MS profiling, monosaccharide composition analysis, linkage analysis, and 1D-/2D-NMR elucidation. Finally, we conclude that the backbone of DOP is a β-D-1,4-mannan which is confirmed by other analysis such as comparison with reference mannan. This oligosaccharide analysis is more straightforward and reliable by transforming the complicated polymers into oligomers which have more accurate and convincing MS and NMR data.

Oligosaccharide

Mannan

Glucomannan

Degree of polymerization

Monosaccharide

Trisaccharide

10.1016/j.foodhyd.2022.108038

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Citations (19)

3β,11α-Dihydroxy-12-ursen-3-yl palmitate

Acta Crystallographica Section E Structure Reports Online (2011)

Yong-Liang Yuan Su‐Ping Bai Huijuan Liang Dandan Ye

In the title compound, C46H80O3, a natural ursane-type triperpenoid, four of the five six-membered rings adopt chair conformations; the fifth, which has a C=C double bond, adopts an approximate half-boat conformation. In the crystal, molecules are linked by O—H⋯O hydrogen bonds, forming chains along [010].

Crystal (programming language)

10.1107/s1600536811047106

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An oligosaccharide-marker approach to quantify specific polysaccharides in herbal formula by LC-qTOF-MS: Danggui Buxue Tang, a case study

Journal of Pharmaceutical and Biomedical Analysis (2020)

Lifeng Li Tin-Long Wong Jixia Zhang Lishuang Zhou Su‐Ping Bai

Oligosaccharide

Decoction

Repeatability

10.1016/j.jpba.2020.113235

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Citations (18)

Two New Sesquiterpenoids from Doellingeria Scaber

Journal of Chemical Research (2007)

Su‐Ping Bai Xing-Ke Ma Guangzhou Lu Fulin Yan

Examination of Doellingeria scaber collected in China afforded six sesquiterpenoids (1–6) of which two (1 and 4) are new. The structures of two new compounds were established by interpretation of spectroscopic data (IR; HR-MS; 1 H, 13 C and 2D NMR).

10.3184/030823407x218002

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Anent-kaurane diterpenoid fromIsodon japonicavar. glaucocalyx

Acta Crystallographica Section E Structure Reports Online (2009)

Su‐Ping Bai Guosheng Luo Xiaoyi Zhang Wei Liu

The title compound, 14β-acet-oxy-7α-hydr-oxy-ent-kaur-16-ene-3,15-dione or glaucocalyxin B, C(22)H(30)O(5), a natural ent-kaurane diterpenoid, is composed of four rings with the expected cis and trans ring junctions. In the crystal structure, there are two mol-ecules in the asymmetric unit related by a noncrystallographic twofold screw axis, and ring A is disordered [ratio occupancies 0.829 (19):0.171 (19)], such that both chair and boat conformations are present, but with the boat conformation as the major component. In the crystal, mol-ecules are linked by inter-molecular O-H⋯O hydrogen bonds.

10.1107/s1600536809027159

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A novel eremophilane sesquiterpenoid from Ligularia intermedia roots and rhizomes

Chemistry of Natural Compounds (2013)

Yong-Liang Yuan Lizhen Fang Su‐Ping Bai Huijuan Liang Dandan Ye

Intermedia

10.1007/s10600-013-0575-3

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Citations (7)

CCDC 2104638: Experimental Crystal Structure Determination

The Cambridge Structural Database (2021)

Qinghe Gao Manman Wu Le Zhang Pengju Xu He Wang

10.5517/ccdc.csd.cc28n1kk

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CCDC 804467: Experimental Crystal Structure Determination

The Cambridge Structural Database (2012)

Huijuan Liang Yunxiao Zhang Guang-Fan Hai Su‐Ping Bai Yong-Liang Yuan

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/ccw03kj

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17β-Hydroxy-28-norolean-12-ene-3,16-dione

Acta Crystallographica Section E Structure Reports Online (2005)

Su‐Ping Bai Yang Li

Molecules of the title compound, C29H44O3, are linked into chains by intermolecular O—H⋯O hydrogen bonds involving the carbonyl and hydroxyl groups.

Ene reaction

10.1107/s1600536805007051

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Citations (2)