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Journals and Conferences
The design of stacks of layered materials in which adjacent layers interact by van der Waals forces has enabled the combination of various two-dimensional crystals with different electrical, optical and mechanical properties as well as the emergence of novel physical phenomena and device functionality. Here, we report photoinduced doping in van der Waals… (More)
A new C-nor-D-homosteroid alkaloid, C27H43O6N, mp 171.5-173 degrees C, named pingbeimine C, was isolated from the bulb of Fritillaria ussuriensis Maxim. On the basis of IR, MS, 1HNMR and 13CNMR spectroscopic data, particularly X-ray crystallographic analysis, structure IV has been assigned to this alkaloid.
A new C-nor-D-homosteroidal alkaloid named Yibeinoside B was isolated from the bulb of Fritillaria pallidiflora Schrenk by column chromatographic techniques. The structure has been determined based on spectral and chemical data.
Three steroid alkaloids were isolated from the bulb of Fritillaria pallidiflora. On the basis of spectroscopic analysis and physico-chemical constants they were identified as imperialine, imperialine-beta-D-glucoside and peimissine.
In this paper three compounds isolated from Daphne koreane are described. Their structures have been identified as beta-sitosterol, naringenin and 7,8-dimethoxycoumarin on the basis of spectral data and chemical reactions.
Two steroidal alkaloids were isolated from the bulb of Fritillaria pallidiflora Schreb by column chromatographic techniques. One of them was identified as known alkaloid sinpeinine A, another alkaloid was found to be a new compound named yibeinoside A, which is the Sinpeinine-3-O-beta-glucoside. Its structure was confirmed on the basis of chemical and… (More)
A new steroidal alkaloid, yibeissine (II), with a know alkaloid (I) was isolated from the bulb of Fritillaria pallioiflora Schrenk by column chromatographic techniques. Their structures have been determined based on spectral and chemical data.
Three crystalline chemical components were isolated from the stems and leaves of Fritillaria ussuriensis by column chromatographic technique. On the basis of the IR, MS and 1HNMR spectra, the structure has been identified as pingbeimine B, pingbeimine C and pingbeininoside.
X.-F. Huang, L.-Y. He, L. Xue, T.-L. Sun, L.-W. Zeng, Z.-H. Gong, M. Hu, and T. Zhu Key Laboratory for Urban Habitat Environmental Science and Technology, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, China State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental… (More)