A new spirostanol saponin, named chinenoside VI, was isolated from the bulbs of Allium chinense. On the basis of spectral data and chemical evidence, its structure was established as: 25 (R)-24-O-beta-D-glucopyranosyl...A new spirostanol saponin, named chinenoside VI, was isolated from the bulbs of Allium chinense. On the basis of spectral data and chemical evidence, its structure was established as: 25 (R)-24-O-beta-D-glucopyranosyl-3 beta, 24 beta-dihydroxy-5 alpha-spirost-3-O-alpha-L-arabinopyranosyl-(1 --> 6)-beta-D-glucopyranoside.展开更多
Wavelet Neural Network (WNN) was employed in a rapid calculation of the atomic electron affinities, with atomic ionization potentials and atomic electron configurations chosen as input parameters. Many unmeasured valu...Wavelet Neural Network (WNN) was employed in a rapid calculation of the atomic electron affinities, with atomic ionization potentials and atomic electron configurations chosen as input parameters. Many unmeasured values were obtained, and the estimates appeared to be sufficiently accurate for potential applications.展开更多
文摘A new spirostanol saponin, named chinenoside VI, was isolated from the bulbs of Allium chinense. On the basis of spectral data and chemical evidence, its structure was established as: 25 (R)-24-O-beta-D-glucopyranosyl-3 beta, 24 beta-dihydroxy-5 alpha-spirost-3-O-alpha-L-arabinopyranosyl-(1 --> 6)-beta-D-glucopyranoside.
文摘Wavelet Neural Network (WNN) was employed in a rapid calculation of the atomic electron affinities, with atomic ionization potentials and atomic electron configurations chosen as input parameters. Many unmeasured values were obtained, and the estimates appeared to be sufficiently accurate for potential applications.
