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中文摘要：
应用一维1HNMR、13CNMR、DEPT、二维HMBC、HSQC、1H—HCOSY、ROESY对1，3，6-三羟基-7-甲氧基-2，8双（3-甲基-2-丁烯）-9劬酮（amangostin、α-MAG）的1H、13C原子进行了指认归属．
英文摘要：
The fruit hull of mangosteen, Garcinia mangostana, has been used for many years as a medicine for treatment of skin infection, wounds and diarrhea. In the present study, 1D 1H NMR, 13C NMR, DEPT and 2D HMBC, HSQC, 1H-1H COSY, ROESY methods were used to identify the structure of 1,3,6-trihydroxy-7-methoxy-2,8-bis-（3- methyl-2-butenyl）-9-xanthenone α-mangostin extracted from the fruit hull of mangosteen. The 1H and 13C chemical shifts of α-mangostin were assigned.
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