data-id="" iid="">ScienceDirecthttps://www.sciencedirect.com/science/article/pii/S0031942200898209NMR spectral analysis of polyphenols from Punica granatum网页1994年6月1日 · The "CNMR spectra of 2 and 10 (Table 4) gave data which were closely similar to those reported [3, 6]. The 'CNMR spectrum of the inter- mediate 2a was analysed for the first time. ... The signals for these three protons are shifted significantly downfield compared to those in fS-o- glucopyranose [14], thus indicating that the hydroxyl groups at ...
发布时间：2024-07-03data-id="" iid="">usda.govhttps://www.fpl.fs.usda.gov/documnts/pdf2010/fpl_2010_ralph001.pdf[PDF]NMR of Lignins - USDA网页2011年12月1日 · NMR of Lignins. 171. lignins produced in this manner appear to be much closer in composition/structure to natural lignins, presumably due to the slow diffusion of monomer (radicals) into the lignifying zone [203]. Again, minor or novel monomers can be incorporated into lignins [112].
发布时间：2024-07-03data-id="" iid="">ScienceDirecthttps://www.sciencedirect.com/science/article/pii/S0031942200897939Astragalosides from hairy root cultures of Astragalus网页1994年6月1日 · The 'HNMR and "CNMR spectra of 2 were identical to those of astragaloside I. Thus, compound 2 was identified as astragaloside I. Compound 4, astragaloside IV, was analysed for C4iH(,gOi4 by HR-FAB mass spectrometry and showed the presence of a hydroxyl group (33950'). The ^CNMR spectrum of 4 displayed a total of 41 carbon signals.
发布时间：2024-07-03data-id="" iid="">ScienceDirecthttps://www.sciencedirect.com/science/article/pii/003194229385238MPhenylethanoid glycosides from Plantago depressa网页1993年3月1日 · Plantago depressa. Plantaginaceae. phenylethanoid glycosides. β-oxoacteoside. Phytochemistry, Vol 32 No 4 pp 975 977 1993 Printed in Great Britain 0031 9422/93 $600+000 i 1993 Pergamon Press Ltd PHENYLETHANOID GLYCOSIDES FROM PLANTAGO DEPRESSA SANSEI NISHIBE,* MICHIKO SASAHARA, JIAO YiNG,f YUAN …
发布时间：2024-07-03