Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Narenchaoketu Han"'
Publikováno v:
The Journal of Organic Chemistry. 87:8142-8150
The rhodium(III)-catalyzed C-H activation followed by intramolecular annulation reactions between arylhydrazines and iodonium ylides under suitable conditions has been described. Tetrahydrocarbazol-4-ones are readily achieved with moderate to excelle
Autor:
Wenfeng Hai, Wenming Wu, Tatsuro Goda, Sihua Pu, Narenchaoketu Han, Xia Wang, Limei Duan, Jinghai Liu, Liming Bao
Publikováno v:
Langmuir : the ACS journal of surfaces and colloids. 36(2)
Conducting polymers tethered with molecular recognition elements are good candidates for biosensing applications such as detecting a target molecule with selectivity. We develop a new monomer, namely, 3,4-ethylenedioxythiophene bearing a pyridylboron
Publikováno v:
Zeitschrift für Naturforschung B. 70:379-384
The phytochemical study of the EtOAc extract from Panzeria alaschanica resulted in the isolation of two new acylated flavone glycosides, 5,7,4′-trihydroxyflavone-7-O-(6″-O-[E]-coumaroyl)-β-glucopyranoside (1) and 5,7,4′-trihydroxyflavone-7-O-(
Publikováno v:
Journal of Molecular Structure. 1088:34-37
Two new flavonoids, named as sacriflavone A (1) and sacriflavone B (2), were isolated from the CHCl3 extract of Artemisa sacrorum Ledeb (A. sacrorum). The structures of the isolated compounds have been elucidated unambiguously by UV, MS, and a series
Publikováno v:
Monatshefte für Chemie - Chemical Monthly. 146:1771-1775
A new flavonoid and two known flavonoids were isolated from the EtOAc extract of the leaves of Astragalus membranaceus (Fisch) Bge. var. mongholicus (Bge) Hsiao (A. membranaceus). This is the first report on the structure elucidation of the new compo
Publikováno v:
Monatshefte für Chemie - Chemical Monthly. 146:1025-1030
Two new flavone C-glycosides, named as panzeroside A and B were isolated from the n-BuOH crude extract of the aerial parts of Panzeria alaschanica Kuprian. Their structures were elucidated by spectroscopic methods, including UV, IR, ESI–MS, 1D NMR,
Publikováno v:
Journal of Molecular Structure. 1076:535-538
Two isoflavane glycoside had been isolated from the EtOAc-soluble fraction of the roots of Astragalus membranaceus (Fisch) Bge. var. mongholicus (Bge) Hsiao. This is the first report on the structure elucidation of 2′,5′-dicarbonyl-3′,4′-dime
Autor:
Nayintai Dai, Narenchaoketu Han, Rongjun Wu, Jiesi Wu, Wenquan Tai, Xiaolan Wu, Wu-Li-Ji Ao, Qinghu Wang
Publikováno v:
Monatshefte für Chemie - Chemical Monthly. 146:383-387
Flavonoid and biflavonoid glycosides have been isolated from the n-BuOH extract of Artemisia frigida Willd. This is the first report on the structure elucidation of two new compounds based on spectroscopic methods including ultraviolet (UV), infrared
Autor:
Jiesi Wu, Rongjun Wu, Xiao-Lan Wu, Wenquan Tai, Na-Yin-Tai Dai, Narenchaoketu Han, Qinghu Wang
Publikováno v:
Zeitschrift für Naturforschung B. 69:1021-1025
An investigation of the petroleum ether extract from Ixeris chinensis Nakai has led to the isolation of a new compound, 3-O-acetyl-22,28-cyclobauer-7-en-3β-ol (1), together with four known compounds which have been isolated from this plant for the f
Publikováno v:
Journal of Molecular Structure. 1074:284-288
Phytochemical study of the ethanol extract of Astragalus membranaceus (Fisch) Bge. var. mongholicus (Bge) Hsiao resulted to the isolation of two new compounds, 1-hydroxy-5-methylolbenzol-2- O -β- d -glucoside ( 1 ) and (3R, 4R)-4,7-hydroxy-2′,3′