Studies on the constituents of aceraceae plants. II. Structure of aceroside I, a glucoside of a novel cyclic diarylheptanoid from Acer nikoense Maxim.
作者:MASAHIRO NAGAI、MASAYOSHI KUBO、MASAO FUJITA、TAKAO INOUE、MITSUYOSHI MATSUO
DOI:10.1248/cpb.26.2805
日期:——
The structure of aceroside I, C25H32O8, mp 170-171°(acetone), [α]20D-7.7°, which was isolated from the stem bark of Acer nikoense MAXIM. (Aceraceae), was established to be acerogenin A β-D-glucopyranoside represented by formula 1. Acerogenin A, C19H22O3, mp 151-152°, [α]20D+57.3°, was concluded to be a m-, p'-bridged diphenyl ether type diarylheptanoid (2) on the basis of chemical and spectroscopic (especially NMR) evidences. The stereostructure of 2 was determined by derivation of acerogenin A (2) into (S)-1-(p-hydroxyphenyl)-7-(p-methoxyphenyl)-heptan-3-ol. Acerogenin A (2) is the first example of a novel type of diarylheptanoid-20-oxa-[7, 1]-metapara-cyclophane.
铝苷 I 的结构为 C25H32O8,熔点 170-171°C(丙酮),[α]20D-7.7°,是从日本枫(Acer nikoense MAXIM.)的树皮中分离出来的,确定为铝苷 A β-D-葡萄糖苷,表示为公式 1。铝苷 A 的分子式为 C19H22O3,熔点 151-152°C, [α]20D+57.3°,根据化学和光谱(特别是 NMR)证据,推断其为 m-,p'-桥联二苯醚类型的二酰基七氢烷(2)。通过将铝苷 A(2)衍生为 (S)-1-(p-羟基苯基)-7-(p-甲氧基苯基)-庚-3-醇,确定了 2 的立体结构。铝苷 A(2)是新型二酰基七氢烷-20-氧-[7, 1]-间对-环烷烃的第一个例子。