全部文献期刊会议图书|学者科研项目
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作者:Jinhong Ren , Tina L. Mistry , Pin-Chih Su ...
来源:[J].Bioorganic & Medicinal Chemistry Letters(IF 2.338), 2018, Vol.28 (11), pp.2074-2079
摘要:... Determining the absolute configuration for these optical compounds and elucidating their binding modes is important for further design. Electronic circular dichroism (ECD) quantum calculations have become important in determining absolute configurations of optical compound...
作者:Kazuo Koike , Hiroshi Yoshino , Hong-yu Li ...
来源:[J].Tetrahedron Letters(IF 2.397), 2015, Vol.56 (38), pp.5306-5308
摘要:Abstract(#br)The absolute configuration of picrasidine Y, a β-carboline alkaloid isolated from Picrasma quassioides (Simaroubaceae), has not been determined. To determine the absolute configuration of picrasidine Y, we synthesized stereoisomers of picrasidine Y through 7-step ...
作者:Kan Li , Da-Song Yang , Xiao-Fei Gu ...
来源:[J].Fitoterapia(IF 2.231), 2019, Vol.134, pp.135-140
摘要:Abstract(#br)The determination of the absolute configuration of natural products still faces many challenges, especially the active pharmaceutical ingredient which is trace, oily and novel structures. Currently, NMR requires chiral reagents in determining the absolute configuration...
作者:Katsuyuki Nakashima , Hiroyuki Kawano , Minako Kumano ...
来源:[J].Tetrahedron Letters(IF 2.397), 2015, Vol.56 (34), pp.4912-4915
摘要:... The absolute configuration was established using the modified Mosher method on the CBS reduction product. This synthesis established the absolute configuration of the natural product, which is presumably derived from a 10β-methyl-7-βH-eudesmane type precursor.
作者:Kiyonaga Fujii , Yukie Yahashi , Tomoyo Nakano ...
来源:[J].Tetrahedron(IF 2.803), 2002, Vol.58 (34), pp.6873-6879
摘要:Abstract(#br)For the simultaneous detection and determination of the absolute configuration of a thiazole-containing (Tzl-) amino acid in a peptide, we have developed a reliable method using the ‘advanced Marfey's method’, which includes HPLC with a rational guideline, a...
作者:Satoru Karasawa , Kenji Yoza , Nguyen Huu Tung ...
来源:[J].Tetrahedron Letters(IF 2.397), 2015, Vol.56 (52), pp.7158-7160
摘要:... To confirm the absolute configuration of molucidin, we prepared single crystals of molucidin for X-ray analysis. The absolute configuration of the afforded single crystal was determined by X-ray crystallography using a Cu radiation source. X-ray diffraction data were collec...
作者:Mark A.J. Koenis , Eveline H. Tiekink , Davita M.E. van Raamsdonk ...
来源:[J].Analytica Chimica Acta(IF 4.387), 2019, Vol.1090, pp.100-105
摘要:Abstract(#br)The absolute configuration of a chiral molecule is key to its biological activity. Being able to find out what this configuration is, is thus crucial for a wide range of applications. The difficulties associated with such a determination steeply rise as the number of...
作者:Marizeth L. Barreiros , Jorge M. David , Juceni P. David
来源:[J].Química Nova(IF 0.737), 2005, Vol.28 (6), pp.1061-1065
摘要:This review reports the determination of absolute configuration of primary and secondary alcohols by ¹H NMR spectroscopy, using the Mosher method. This method consists in the derivatization of an alcohol possessig unknown absolute configuration with...
作者:Jian-Rong Wang , Xiaowu Fan , Qiaoce Ding ...
来源:[J].Journal of Molecular Structure(IF 1.404), 2016, Vol.1119, pp.269-275
摘要:Abstract(#br)Heavy atom (chloride, bromide, and iodide) based co-crystals for determination of absolute configuration (AC) for chiral molecules were synthesized and evaluated. Co-crystals of cholestanol and l -ascorbic acid were analysed and the effects and potential benefits ...
作者:Ping He , Xiangfen Wang , Xiujie Guo ...
来源:[J].Tetrahedron Letters(IF 2.397), 2014, Vol.55 (18), pp.2965-2968
摘要:... Its absolute configuration is assigned using vibrational circular dichroism (VCD). By careful VCD investigation of (7 S ,8 S ) and (7 S ,8 R ) using B3LYP/6-311+G(d) methods, absolute configuration of (+)-schizandrin is assigned as (7 S ,8 R ). Electronic circular dichroism (...

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