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藤黄科植物大叶藤黄 Garcinia xanthochymus Hook.f.ex T.Anders,亦称香港倒捻子、鸡蛋树,分布于东南亚及我国广西和云南。其茎叶和果的浆汁苦、酸、凉,用于驱虫和治蚂蝗入鼻。1973年,Karanjgoakar 等从大叶藤黄的果实分离得到一种新化合物,命名为大叶藤黄醇(xanthochymol),经红外、紫外、氢谱和碳谱分析,确定其化学结构为Ⅰ式,但立体构型未明。1975年,Venkatswamy 等根据测得的 X-衍射光谱认为其绝对构型为Ⅱ式。1976年 Blount 等重新测定了大叶藤黄醇的 X-衍射光谱以及氢谱和碳谱,修正了原来的结构,如Ⅲ式。
Garcinia xanthochymus Hook.f.ex T.Anders Garcinia xanthochymus Hook.f.ex T.Anders, also known as Hong Kong dumplings, egg trees, distributed in Southeast Asia and China’s Guangxi and Yunnan. The stalks of the stems and leaves and fruit are bitter, sour, and cool, and are used to repel insects and prevent grasshoppers from entering the nose. In 1973, Karanjgoakar et al. isolated a new compound from the fruit of Garcinia cambogia, named xanthochymol, and determined its chemical structure as I by infrared, ultraviolet, hydrogen and carbon spectrum analysis. However, the three-dimensional configuration is not clear. In 1975, Venkatswamy et al. thought that its absolute configuration was type II based on the measured X-ray diffraction spectrum. In 1976, Blount et al re-measured the X-ray diffraction spectrum, hydrogen spectrum, and carbon spectrum of garcinol, and modified the original structure, such as III.