全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
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作者:Xiang-dong Qin , Shu Yang ...
来源:[J].Chemistry of Natural Compounds(IF 0.599), 2017, Vol.53 (3), pp.501-503Springer
摘要:A new aporphine alkaloid, 6-formyl-1,2,9,10-tetramethoxy-6a,7-dehydroaporphine ( 1 ), was isolated from the aerial parts of Aconitum carmichaelii along with two known isoquinoline alkaloids, glaucine ( 2 ) and norglaucine hydrochloride ( 3 ). The structure of 1 was determined by ...
作者:Xiang-Dong Qin , Yan Qu ...
来源:[J].Journal of Asian Natural Products Research(IF 0.948), 2011, Vol.13 (11), pp.1047-1050Taylor & Francis
摘要:A new picrotoxane-type sesquiterpene, findlayanin (1(#br)), was isolated from Dendrobium findlayanum with crystallinin (2(#br)). The structure of compound 1(#br) was established to be (1 R ,2 S ,3 R ,4 S ,5 R ,6 S ,9 R )-2,3,11,12-tetrahydroxypicrotoxan-12(15)-lactone by spectros...
作者:... Jin-Yu Shen , Qing-Mei Hu , Xiang-Dong Qin
来源:[J].Polyhedron(IF 1.813), 1995, Vol.14 (15), pp.2079-2085Elsevier
摘要:Abstract(#br)The isolobal displacement reactions between cluster compounds [( η 5 RC 5 H 4 ) (CO) 2 M]Fe(CO) 3 Co(CO) 3 (μ 3 -S) and group 6 metal anions η 5 -R′C 5 H 4 (CO) 3 M′ − afforded eight heteronuclear transition-metal clusters [( η 5 -RC 5 H 4 )(CO) 2 M] [...
作者:Xiang-Dong Qin , Cui-Xiang Sun ...
来源:[J].Journal of Organometallic Chemistry(IF 2), 1998, Vol.571 (1), pp.55-63Elsevier
摘要:Abstract(#br)The reactions of Grignard reagents RMgX with elemental Se or Te in THF, followed by treatment of the intermediates RSeMgX or RTeMgX with Fe 3 (CO) 12 at room temperature (r.t.), were found to give [MgX] + salts of anions [( μ -RSe)( μ -CO)Fe 2 (CO) 6 ] − ( 2 ) a...
作者:Xiang-Dong Qin , Ji-Kai Liu
来源:[J].Zeitschrift für Naturforschung C(IF 0.604), 2015, Vol.58 (9-10), pp.759-762De Gruyter
摘要:Abstract A new sweet dihydrochalcone-glucoside, trilobatin 2″- acetate (1), was isolated from the leaves of Lithocarpus pachyphyllus, together with phlorizin and trilobatin. The structures were established by spectroscopic methods, including one- and two-dimensional NMR (COS...
作者:Xiang-Dong Qin , Wan-Lin Wu
来源:[J].Zeitschrift für Naturforschung C(IF 0.604), 2015, Vol.59 (7-8), pp.481-484De Gruyter
摘要:Abstract In vitro antioxidant activities of three sweet dihydrochalcone glucosides from the leaves of Lithocarpus pachyphyllus (Kurz) Rehd. (Fagaceae), trilobatin 2″-acetate (1), phloridzin (2) and trilobatin (3), were investigated. The IC50 (50% inhibitory concen...
作者:Jun-Yi Shen , Xiang-Dong Qin
来源:[J].Journal of Service Science and Management, 2011, Vol.4 (3), pp.380-390ProQuest
摘要:Understanding why firms choose to implement voluntary environmental schemes in a large polluted country like China is important for both environmental economists and policy makers. In this paper, we utilize unique plant-level survey data of 270 Chinese firms in manufacturing indu...
作者:Xiang-Dong Qin , Jun-Yi Shen
来源:[J].Journal of Service Science and Management, 2011, Vol.04 (03), pp.380-390Scientific Research Publishing
摘要:Understanding why firms choose to implement voluntary environmental schemes in a large polluted country like China is important for both environmental economists and policy makers. In this paper, we utilize unique plant-level survey data of 270 Chinese firms in manufacturing indu...

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