Supplementary material

tarix	26.06.2016
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SUPPLEMENTARY MATERIAL
Two new xanthones from the pericarp of Garcinia mangostana

Xiaojun Zhou^a,c, Luan He^a,b, Xin-Xing Wu^a,b, Yanxia Zhong^a, Juan Zhang^d，Yuanxing Wang^d,*, Bin Wang^c, Zhifang Xu^a, Sheng-Xiang Qiu^a,*

^aKey Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China;

^bUniversity of Chinese Academy of Sciences, Beijing 100049,China;

^c Department of Pharmacy, Medical College, Nanchang University, Nanchang, China;

^d State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang,330047, People’s Republic of China..

*Corresponding authors: E-mail: yuanxingwang@ncu.edu.cn(YXW); sxqiu@scbg.ac.cn (SXQ)

Abstract
Two new xanthones, designated garcimangosxanthone F (1) and garcimangosxanthone G (2), were isolated from the EtOAc-soluble fraction of ethanolic extract from the pericarp of Garcinia mangostana. Their structures were established as 1,6,7-trihydroxy-5-(3-methylbut-2-enyl)-8-(3-hydroxy-3-methylbutyl)-6',6'-dimethylpyrano[2',3':3,2]xanthone and 1,6,7-trihydroxy-5-(3-methylbut-2-enyl)-8-(3-hydroxy-3-methylbutyl)-6',6'-dimethyl-4',5'-dihydropyrano[2',3':3,2]xanthone, respectively, on the basis of their 1D, 2D NMR and MS data interpretation.
Keywords: Garcinia mangostana; xanthone; garcimangosxanthone F; garcimangosxanthone G

SUPPLEMENTARY MATERIALS

Index

HR-ESI-MS spectrum of garcimangosxanthone F (1)
¹H NMR spectrum of garcimangosxanthone F (1)
¹³C NMR spectrum of garcimangosxanthone F (1)
HMBC spectrum of garcimangosxanthone F (1)
HR-ESI-MS spectrum of garcimangosxanthone G (2)
¹H NMR spectrum of garcimangosxanthone G (2)
¹³C NMR spectrum of garcimangosxanthone G (2)
HMBC spectrum of garcimangosxanthone G (2)
Key HMBC correlation of compounds 1 and 2 depicted in Figure

1. HR-ESI-MS spectrum of garcimangosxanthone F (1)

2. ¹H NMR spectrum of garcimangosxanthone F (1)

3. ¹³C NMR spectrum of garcimangosxanthone F (1)

4. HMBC spectrum of garcimangosxanthone F (1)

HR-ESI-MS spectrum of garcimangosxanthone G (2)

6. ¹H NMR spectrum of garcimangosxanthone G (2)

7. ¹³C NMR spectrum of garcimangosxanthone G (2)

8. HMBC spectrum of garcimangosxanthone G (2)

Key HMBC correlations of compounds 1 and 2 depicted in Figure