从美丽异木棉 Guettarda speciosa L. 的叶子中分离得到一个甘油-α-D-葡糖苷和一个巨型麦角甾烷糖苷。
A glycerol α-D-glucuronide and a megastigmane glycoside from the leaves of Guettarda speciosa L.
机构信息
Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan.
出版信息
J Nat Med. 2011 Apr;65(2):364-9. doi: 10.1007/s11418-010-0484-8. Epub 2010 Nov 13.
From the 1-BuOH-soluble fraction of a MeOH extract of the leaves of Guettarda speciosa L., two new compounds (1, 2) were isolated together with six known compounds. Spectroscopic analysis of 1 and 2 established their structures to be derivatives of a glycerol α-glucuronide and a megastigmane glycoside, respectively. HPLC analysis of the hydrolyzate of 1 confirmed the presence of D-glucuronic acid in the structure, and the modified Mosher's method established the absolute structure of 2.
从美丽 Guettarda 叶甲醇提取物的 1-BuOH 可溶部分，分离得到了两种新化合物（1、2），同时还分离得到了六种已知化合物。通过对化合物 1 和 2 的光谱分析，确定了它们的结构分别为甘油 α-葡萄糖醛酸苷和megastigmane 糖苷的衍生物。对 1 的水解产物进行 HPLC 分析，确认了结构中存在 D-葡萄糖醛酸，并用改良的 Mosher 法确定了 2 的绝对结构。
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