Xiao-xi Si

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Unintended compositional changes in transgenic rice seeds were studied by near-infrared reflectance, GC-MS, HPLC, and ICP-AES coupled with chemometrics strategies. Three kinds of transgenic rice with resistance to fungal diseases or insect pests were comparatively studied with the nontransgenic counterparts in terms of key nutrients such as protein, amino(More)
Two new isobenzofurans, 1-(3-hydroxypropanoyl)-2-methoxy-isobenzofuran-1(3H)-one (1) and 2-methoxy-1-prenyl-isobenzofuran-1(3H)-one (2), were isolated from the leaves of Yunnan local sun-cured tobacco. Their structures were determined by means of HR-ESI-MS and extensive 1D and 2D NMR spectroscopic studies. Compounds 1 and 2 were tested for their(More)
Two new coumarins, 6-hydroxy-7-methyl-3-(4′-methoxyphenyl)-coumarin (1) and 6-hydroxy-5-methoxy-7-methyl-3-(4′-methoxyphenyl)-coumarin (2), together with five known coumarins (3–7), were isolated from the leaves of Nicotiana tabacum. Their structures were determined by means of HR-ESI-MS and extensive 1D and 2D NMR spectroscopic studies. Compounds 1–7 were(More)
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