Studies on the constituents of Syringa species.: XII.: New glycosides from the leaves of Syringa reticulata (Blume) Hara
Studies on the constituents of Syringa species.: XII.: New glycosides from the leaves of Syringa reticulata (Blume) Hara
复制标题
DOI：
10.1248/cpb.51.883
复制
发表时间：
2003-07-01
影响因子：
1.7
通讯作者：
Kikuchi, M
中科院分区：
文献类型：
--
作者：
Machida, K;Unagami, E;Kikuchi, M
从紫丁香（Syringa reticulata）叶中分离得到3个新的甙类化合物：6 ′-O-α-（D）-吡喃半乳糖基紫丁香苦苷（1），裂殖果苷7-甲酯（2）和（+）-落叶松树脂醇4 ′-O-β-（D）-吡喃葡萄糖基-（1->3）-β-（D）-吡喃葡萄糖苷（3）。它们的结构是建立在化学和光谱数据的基础上。化合物1是第一种天然存在的具有蜜二糖的环烯醚萜二糖苷。将2的光谱数据与先前确认为裂叶木苷7-甲酯的光谱数据进行比较，得出结论，确认的结构应修正为裂叶木苷的钠盐（2 '）。
Three new glycosides, 6'-O-alpha-(D)-galactopyranosylsyringopicroside (1), secologanoside 7-methyl ester (2) and (+)-lariciresinol 4'-O-beta-(D)-glucopyranosyl-(1-->3)-beta-(D)-glucopyranoside (3), were isolated from the leaves of Syringa reticulata. Their structures were established on the basis of chemical and spectral data. Compound 1 is the first naturally occurring iridoid di-glycoside having melibiose. Comparison of the spectral data of 2 and that previously recognized as secologanoside 7-methyl ester led to the conclusion that the recognized structure should be revised to the sodium salt of secoxyloganin (2').