水稻（Oryza sativa）稻壳的化学成分及其对浮萍（Lemna paucicostata Hegelm 381）的除草活性。
Chemical constituents of rice (Oryza sativa) hulls and their herbicidal activity against duckweed (Lemna paucicostata Hegelm 381).
作者信息
Chung Ill Min, Ali Mohd, Ahmad Ateeque, Lim Jung Dae, Yu Chang Yeon, Kim Jin Seog
机构信息
Department of Applied Life Science, Konkuk University, Seoul 143-701, South Korea.
出版信息
Phytochem Anal. 2006 Jan-Feb;17(1):36-45. doi: 10.1002/pca.879.
Four new compounds, stigmastanol-3beta-p-glyceroxydihydrocoumaroate (1), stigmastanol-3beta-p-butanoxydihydrocoumaroate (2), lanast-7,9(11)-dien-3alpha,15alpha-diol-3alpha-D-glucofuranoside (3) and 1-phenyl-2-hydroxy-3,7-dimethyl-11-aldehydic-tetradecane-2-beta-D-glucopyranoside (4), along with several known compounds were isolated from the methanol extract of hulls of Oryza sativa. The new structures were established by one- and two-dimensional NMR and in combination with IR, EI/MS, FAB/MS and HR-FAB/ MS. Compound (3) strongly inhibited the growth of duckweed (Lemna paucicostata Hegelm 381), whilst compounds (2) and (4) exhibited weak inhibition.
从水稻谷壳的甲醇提取物中分离出四种新化合物，豆甾烷醇-3β-p-甘油氧基二氢香豆酸酯（1）、豆甾烷醇-3β-p-丁氧基二氢香豆酸酯（2）、羊毛甾-7,9(11)-二烯-3α,15α-二醇-3α-D-葡萄糖呋喃糖苷（3）和1-苯基-2-羟基-3,7-二甲基-11-醛基-十四烷-2-β-D-葡萄糖吡喃糖苷（4），以及几种已知化合物。通过一维和二维核磁共振，并结合红外光谱、电子轰击质谱、快原子轰击质谱和高分辨快原子轰击质谱确定了新结构。化合物（3）强烈抑制浮萍（少脉浮萍Hegelm 381）的生长，而化合物（2）和（4）表现出较弱的抑制作用。
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