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XZ Xi-Yuan Zheng
XZ Xin Zhao
YY Ying-Fan Yang
HJ Han-Jie Jiang
WL Wan Li
YS Yi Sun
XP Xiao-Ping Pu
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Swertia punicea was collected from Dali, Yunnan Province, China, and identified by Guang-Xue Liu (Department of Natural Drugs, School of Pharmaceutical Science, Peking University). A voucher specimen (SP-001) was deposited in the herbarium of the Department of Pharmacognosy, School of Pharmaceutical Sciences, Peking University, Beijing. ZYC-1 was extracted and separated from Swertia punicea as zheng’s reported method [9]. The purity of the compound ZYC-1 was determined to be more than 98% by high-performance liquid chromatography (HPLC) analysis and the chemical structure of the compound ZYC-1 was shown in the supporting information (S1 Fig).

Copyright and License information:  ©2017 Zheng et al
This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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