A general NMR procedure for locating methoxyl groups in all flavone and flavonol aglycones and some glycosides utilizing trimethylsilyl ethers and benzene-induced shifts
作者： Eloy Rodriguez , Neil J. Carman , Tom J. Mabry
DOI: 10.1016/S0031-9422(00)90026-8
关键词:
摘要: Abstract All flavonoids are readily converted to their trimethylsilyl ethers and in this form NMR spectra can be recorded both CCl 4 benzene. Both methoxyl groups at certain positions show diagnostic benzene-induced resonance shifts.
elsevier.com
sci-hub.se 参考文章(6)
R.G. Wilson, J.H. Bowie, Dudley H. Williams, Solvent effects in NMR Spectroscopy : Solvent shifts of methoxyl resonances in flavones induced by benzene; an aid to structure elucidation Tetrahedron. ,vol. 24, pp. 1407- 1414 ,(1968) , 10.1016/0040-4020(68)88092-5
David L. Dreyer, Chemotaxonomy of the Rutaceae. IV. Constituents of Murraya paniculata Journal of Organic Chemistry. ,vol. 33, pp. 3574- 3576 ,(1968) , 10.1021/JO01273A048
David L. Dreyer, Citrus bitter principles. IX. Extractives of Casimiroa edulis. Structure of zapoterin Journal of Organic Chemistry. ,vol. 33, pp. 3577- 3582 ,(1968) , 10.1021/JO01273A049
Tom J. Mabry, Jacques Kagan, Heinz Rösler, NMR spectra of trimethylsilyl ethers of flavonoid glycosides Phytochemistry. ,vol. 4, pp. 177- 183 ,(1965) , 10.1016/S0031-9422(00)86161-0
Kala Chand. Das, Wendy J. Farmer, Boris. Weinstein, Phytochemical studies. IX. A new flavone, velutin Journal of Organic Chemistry. ,vol. 35, pp. 3989- 3990 ,(1970) , 10.1021/JO00836A101
A.C. Waiss, R.E. Lundin, D.J. Stern, NMR study of trimethylsilyl ethers of flavonoid compounds Tetrahedron Letters. ,vol. 5, pp. 513- 518 ,(1964) , 10.1016/S0040-4039(00)73265-5