Two diarylheptanoid glycosides, acerosides V (1) and XI (2), were isolated from the stem bark of Acer nikoense MAXIM. (Aceraceae). On hydrolysis, 1 and 2 yielded new diarylheptanoids, acerogenin D (6) and acerogenin E (7), respectively. Acerogenin D (6) was chemically correlated with acerogenin C (5), and acerogenin E, with alnusone (8). On the basis of the chemical and spectroscopic evidence, the chemical structures of 1 and 2 were established as the 2-O-β-D-glucopyranoside of acerogenin D and 3-O-β-D-glucopyranoside of acerogenin E, respectively. Aceroside XI is the first example of the biphenyl type of diarylheptanoid isolated from this plant. A. nikoense thus contains three types of diarylheptanoid, linear, cyclic biphenyl and cyclic diphenyl ether types.
从Acer nikoense MAXIM(槭树科)的茎皮中分离出两种二芳基
庚烷苷,即槭苷V(1)和槭苷XI(2)。
水解后,1和2分别产生了新的二芳基
庚烷苷,即槭苷D(6)和槭苷E(7)。槭苷D(6)与槭苷C(5)在
化学上相关,而槭苷E与
桤木酮(8)相关。根据
化学和光谱学证据,1和2的
化学结构分别确定为槭苷D的2-O-β-
D-吡喃葡萄糖苷和槭苷E的3-O-β-
D-吡喃葡萄糖苷。槭苷XI是从这种植物中分离出的第一个二苯基型二芳基
庚烷苷。因此,A. nikoense含有三种类型的二芳基
庚烷苷,即线型、环状二苯基和环状
二苯醚。