千两茶是由中国茶Camelliasinensis的芽叶经过微生物全发酵而成的一种黑茶。本研究通过色谱技术和重结晶等方法,从该茶叶中分离纯化得到10个化合物,经核磁与质谱等手段鉴定其结构,分别为N-(2-羟苯基)-2-吡咯烷酮(1),对羟基苯乙酮(2),salicifoliol(3),(-)-3-羟基印-紫罗兰酮(4),对羟基肉桂酸乙酯(5),ethyl4-(sulfooxy)benzoate(6),(+)-罗汉松脂酚(7),(-)-松脂素(8),(+).lirioresin01.A(9)和咖啡碱(10)。其中化合物1为新天然产物,化合物6为首次从山茶科植物中分离得到,化合物3—5和7-9为首次从本种植物中分离得到。
Ten compounds were isolated from Qianliang tea, a kind of dark tea fully fermented from the leaves of Camellia sinensis (L.) O. Kuntze vat. sinensis, and identified .as N-(2-hydroxyphenyl)-2-pyrrolidinone (1), p-hydroxyacetophenone (2), salicifoliol (3), (-)-3-hydroxy-/q-ionone (4), p-hydroxy ethyl ciunamate (5), ethyl 4-(sulfooxy)benzoate (6), (+)-matairesinol (7), (-)-pinoresinol (8), (+)-lirioresinol-A (9), and caffeine (10), among which compound 1 was isolated as a new natural product, and compound 6 was isolated from Theaceae family for the first time. Compounds 3, 4, 5, 7, 8, and 9 were isolated from this species for the first time.