Two pentasaccharide resin glycosides from Argyreia acuta
Two pentasaccharide resin glycosides from Argyreia acuta
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DOI：
10.1080/14786419.2015.1030739
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发表时间：
2016-01-02
影响因子：
2.2
通讯作者：
Chen, Yan-Fen
中科院分区：
文献类型：
--
作者：
Yin, Yong-Qin;Pan, Jie-Tao;Chen, Yan-Fen
从尖叶银背草（Argyreia acuta）的地上部分分得两个新化合物，分别为尖叶银背草苷1和2。这两个化合物的核心均为鸢尾酸A，它们在同一个位置上发生了酯化反应，只是在Rha的C-2位上连接了一个取代基。用Mosher法确定了两个化合物中苷元的绝对构型为（11 S）-羟基十六烷酸（jalapinolic acid）。它们的结构通过光谱和化学方法相结合来确定。
Two new compounds of acutacosides 1 and 2, pentasaccharide resin glycosides were isolated from the aerial parts of Argyreia acuta. The core of the two compounds was operculinic acid A, and they were esterfied at the same position, just one substituent group was linked at C-2 of Rha. The absolute configuration of the aglycone in the two compounds was established by Mosher's method, which was (11S)-hydroxyhexadecanoic acid (jalapinolic acid). Their structures were established by a combination of spectroscopic and chemical methods.