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Two New Phenolic Glycosides from Curculigo orchioides
Zuo, Ai-Xue,Shen, Yong,Jiang, Zhi-Yong,Zhang, Xue-Mei,Zhou, Jun,Lu, Jun,Chen, Ji-Jun Korean Chemical Society 2011 Bulletin of the Korean Chemical Society Vol.32 No.3
Two new phenolic glycosides were isolated from the rhizomes of Curculigo orchioides Gaertn.. Based on comprehensive spectroscopic analyses including IR, MS, 1D- and 2D NMR (COSY, HSQC, and HMBC), their structures were elucidated as 3-hydroxyl-5-methyphenol-1-O-[${\beta}$-D-glucopyranosyl-($1{\rightarrow}3$)-${\beta}$-D-glucopyranoside (1) and 1',3'-dimethoxyl-4-hydroxyalangifolioside (2).
Two New Phenolic Glycosides from Curculigo orchioides
Ai-Xue Zuo,Yong Shen,Zhi-Yong Jiang,Xue-Mei Zhang,Jun Zhou,Jun Lü,Ji-Jun Chen 대한화학회 2011 Bulletin of the Korean Chemical Society Vol.32 No.3
Two new phenolic glycosides were isolated from the rhizomes of Curculigo orchioides Gaertn.. Based on comprehensive spectroscopic analyses including IR, MS, 1D- and 2D NMR (COSY, HSQC, and HMBC), their structures were elucidated as 3-hydroxyl-5-methyphenol-1-O-[β-D-glucopyranosyl-(1→3)-β-D-glucopyranoside (1) and 1',3'-dimethoxyl-4-hydroxyalangifolioside (2).
Two New Diterpenoid Alkaloids from Aconitum brachypodum
Yong Shen,Ai-Xue Zuo,Zhi-Yong Jiang,Xue-Mei Zhang,Hong-Ling Wang,Ji-Jun Chen 대한화학회 2010 Bulletin of the Korean Chemical Society Vol.31 No.11
Two new diterpenoid alkaloids, N(19)-en-denudatine (1) and N(4)-butanone-flavaconitine (2), were isolated from Aconitum brachypodum Diels.. Their structures were elucidated by comprehensive spectroscopic analyses including UV, IR, MS, 1D- and 2D-NMR.
Two New Diterpenoid Alkaloids from Aconitum brachypodum
Shen, Yong,Zuo, Ai-Xue,Jiang, Zhi-Yong,Zhang, Xue-Mei,Wang, Hong-Ling,Chen, Ji-Jun Korean Chemical Society 2010 Bulletin of the Korean Chemical Society Vol.31 No.11
Two new diterpenoid alkaloids, N(19)-en-denudatine (1) and N(4)-butanone-flavaconitine (2), were isolated from Aconitum brachypodum Diels.. Their structures were elucidated by comprehensive spectroscopic analyses including UV, IR, MS, 1D- and 2D-NMR.
Yi, Wei-Min,Wang, Feige,Wu, Xue-Bing,Yang, Jinyi,Bai, Jin-Ming,Fan, Xiaohui,Brandt, William N.,Ho, Luis C.,Zuo, Wenwen,Kim, Minjin,Wang, Ran,Yang, Qian,Zhang, Ju-jia,Wang, Fang,Wang, Jian-Guo,Ai, Yanl IOP Publishing 2014 ASTROPHYSICAL JOURNAL LETTERS - Vol.795 No.2
<P>Very few of the z > 5 quasars discovered to date have been radio-loud, with radio-to-optical flux ratios (radio-loudness parameters) higher than 10. Here we report the discovery of an optically luminous radio-loud quasar, SDSS J013127.34-032100.1 (J0131-0321 in short), at z = 5.18 +/- 0.01 using the Lijiang 2.4 m and Magellan telescopes. J0131-0321 has a spectral energy distribution consistent with that of radio-loud quasars. With an i-band magnitude of 18.47 and a radio flux density of 33 mJy, its radio-loudness parameter is similar to 100. The optical and near-infrared spectra taken by Magellan enable us to estimate its bolometric luminosity to be L-bol similar to 1.1 x 10(48) erg s(-1), approximately 4.5 times greater than that of the most distant quasar known to date. The black hole mass of J0131-0321 is estimated to be 2.7 x 10(9) M-circle dot, with an uncertainty up to 0.4 dex. Detailed physical properties of this high-redshift, radio-loud, potentially super-Eddington quasar can be probed in the future with more dedicated and intensive follow-up observations using multi-wavelength facilities.</P>