Studies on the constituents of zizyphi fructus. V. Structures of glycosides of benzyl alcohol, vomifoliol and naringenin.
作者:NOBUYUKI OKAMURA、AKIRA YAGI、ITSUO NISHIOKA
DOI:10.1248/cpb.29.3507
日期:——
New glycosides, zizybeoside I (I) and II (II), zizyvoside I (IV) and II (V), and a mixture of 6, 8-di-C-glucosyl-2 (S)-naringenin and 6, 8-di-C-glucosyl-2 (R)-naringenin (compound A), together with vomifoliol and roseoside, were isolated from the ethanol extract of Zizyphi Fructus. On the basis of spectral and chemical evidence the structures of the new glycosides were determined as benzyl β-D-glucopyranosyl-(1→2)-β-D-glucopyranoside (I), benzyl β-D-glucopyranosyl-(1→2)-[β-D-glucopyranosyl-(1→3)]-β-D-glucopyranoside (II), vomifoliol 9-O-α-L-rhamnopyranosyl-(1→2)-β-D-glucopyranoside (IV), vomifoliol 9-O-β-glucopyranosyl-(1→2)-[β-glucopyranosyl-(1→3)]-β-glucopyranoside (V), 6, 8-di-C-glucosyl-2 (S)-naringenin (VII) and 6, 8-di-C-glucosyl-2 (R)-naringenin (VIII).
新苷类,zizybeoside I (I) 和 II (II),zizyvoside I (IV) 和 II (V),以及 6, 8-di-C-glucosyl-2 (S)-naringenin 和 6, 8- 的混合物从枣子的乙醇提取物中分离出二-C-葡萄糖基-2(R)-柚皮素(化合物 A)以及伏米叶醇和玫瑰花苷。根据光谱和化学证据,新糖苷的结构被确定为苄基 β-D-吡喃葡萄糖基-(1→2)-β-D-吡喃葡萄糖苷 (I)、苄基 β-D-吡喃葡萄糖基-(1→2) )-[β-D-吡喃葡萄糖基-(1→3)]-β-D-吡喃葡萄糖苷 (II)、vomifoliol 9-O-α-L-吡喃鼠李糖基-(1→2)-β-D-吡喃葡萄糖苷 (IV) , vomifoliol 9-O-β-吡喃葡萄糖基-(1→2)-[β-吡喃葡萄糖基-(1→3)]-β-吡喃葡萄糖苷 (V), 6, 8-二-C-葡萄糖基-2 (S)-柚皮素(VII)和6, 8-二-C-葡萄糖基-2(R)-柚皮素(VIII)。