Zobrazeno 1 - 10
of 151
pro vyhledávání: '"Qi-Tai Zheng"'
Autor:
Xiao-Li Li, Rui-Rui Wang, Sheng-Xiong Huang, Ning-Bo Gong, Yang Lu, Yong-Tang Zheng, Liu-Meng Yang, Qi-Tai Zheng, Li Wu, Rong-Tao Li, Han-Dong Sun, Jian-Xin Pu, Wei-Lie Xiao
Publikováno v:
Organic Letters. 23:2392-2392
Autor:
Yu Zhang, Zhi Ping Xu, Qi Tai Zheng, Xin Fang, Xiao-Jiang Hao, Yang Lu, Qian Qian Chen, Ying-Tong Di
Publikováno v:
Angewandte Chemie. 127:5684-5687
Perforalactone A (1), a new 20S quassinoid with a unique cagelike 2,4-dioxaadamantane ring system and a migrated side chain, was isolated from the plant Harrisonia perforata together with two biosynthetically related new quassinoids. The structures o
Autor:
Yang Lv, Jiu Xiang Zhu, Wen Hua Huang, Lan Sun, Qi Tai Zheng, Kuo Hsiung Lee, Dong Lei Yu, Jing Guang Yu
Publikováno v:
Chinese Chemical Letters. 23:583-586
Two novel styryllactones, goniodilactone ( 1 ) and gonioheptenolactone ( 2 ), were isolated from the leaves of Goniothalamus cheliensis Hu. Their structures were determined on the basis of spectroscopic data as well as X-ray crystallography analysis.
Publikováno v:
Chinese Journal of Chemistry. 9:279-283
Studies of schisandrol B under Ritter reaction conditions showed similar results to that of schisandrin. However the carbonium cyclization product (4a) of schisandrol B undergoes oxidative ring opening when exposed to the air. Cyclization of schisant
Publikováno v:
Chinese Journal of Chemistry. 20:887-890
Further investigation on the leaves of Isodon sculponeatus afforded two new ent-kaurane diterpenoids, sculponeatins J and K. Their structures were elucidated on the basis of their spectral properties, as well as X-ray crystallographic analysis. The c
Publikováno v:
Chinese Journal of Chemistry. 19:1097-1100
Two new flavonoids, acanthophorin A (1) and acanthophorin B (2), along with three known compounds tiliroside (3), (-)-catechin (4) and quercetin (5) were isolated from the red alga Acanthophora spicifera. The structures of 1 and 2 were determined to
Autor:
Qi-Tai Zheng, Yan Li, Ning-Bo Gong, Han-Dong Sun, Wei-Lie Xiao, Jian-Xin Pu, Zhuo Hu, Yuan-Yuan Wang, Chun Lei, Yang Lu
Publikováno v:
Chemical and Pharmaceutical Bulletin. 58:939-943
Eighteen compounds, including three new triterpenoids, camellisins A-C (1-3), were isolated from the roots of Camellia sinensis. Their structures were determined on the basis of detailed spectroscopic analysis.
Autor:
Qi-Tai Zheng, Xin Fang, Yong-Bin Lu, Yang Lu, Ying-Tong Di, Shu-Zhen Mu, Chen-Jian Tan, Qiang Zhang, Xiao-Jiang Hao
Publikováno v:
Tetrahedron. 65:7408-7414
Six new rings B,D-seco-type limonoids, cipadonoids B-G (1-6) were isolated from leaves of Cipadessa cinerascens. Their structure was elucidated by extensive spectroscopic methods, and that of 1 was confirmed by single-crystal X-ray diffraction. The a
Autor:
Yang Lu, Yu Zhang, Chun-Shun Li, Zhao-Liang Geng, Shi-Yin Yang, Ying-Tong Di, Zhen Zhang, Xiao-Jiang Hao, Xin Fang, Qi-Tai Zheng
Publikováno v:
Journal of Natural Products. 72:714-718
Seven known and six new tetranortriterpenoids, cineracipadesins A-F (1-6), were isolated from the leaves of Cipadessa cinerascens. Compound 1 has a mexicanolide-type structural skeleton with a rare 9 alpha, 11 alpha-epoxide ring; compound 2 has a met
Autor:
Han-Dong Sun, Jia-Liang Zhong, Rui-Rui Wang, Qi-Tai Zheng, Fei He, Jian-Xin Pu, Yong-Tang Zheng, Wei-Lie Xiao, Xue-Mei Gao, Sheng-Xiong Huang, Yang Lu
Publikováno v:
Phytochemistry. 69:2862-2866
Nortriterpenoids, sphenadilactone C (1) and sphenasin A (2), together with four known lignans (3-6), were isolated from the leaves and stems of Schisandra sphenanthera. Their structures were elucidated by extensive analysis of 1D and 2D NMR spectrosc