Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Ning-Chuan Kong"'
Publikováno v:
Helvetica Chimica Acta. 98:72-77
Four new indole alkaloids, trigonoliimines D-G (1-4, resp.), were isolated from Trigonostemon lii. Their structures were elucidated by spectroscopic methods, including extensive 1D- and 2D-NMR experiments.
Autor:
Xiao-Jiang Hao, Yun-Dong Wu, Jun-Song Wang, Xin Fang, Ying-Tong Di, Chun-Shun Li, Chorng-Shin Wee, Hua-Jie Zhu, Ning-Chuan Kong
Publikováno v:
Tetrahedron. 70:4017-4021
Two new alkaloids, longphyllinesides A (1) and B (2), were isolated from Daphniphyllum longeracemosum. Their structures were elucidated using 1D and 2D NMR spectra. The key step in their biogenetic pathway is indicated to be Diels-Alder cycloaddition
Autor:
Shu-Zhen Mu, Cheng-Jian Tan, Yu Zhang, Yang Lu, Xiao-Jiang Hao, Chun-Shun Li, Yue-Hu Wang, Jian-Xin Zhang, Xin Fang, Ye Wang, Ying-Tong Di, Suo Gao, Ning-Chuan Kong, Hongping He
Publikováno v:
Tetrahedron Letters. 53:2588-2591
Daphnioldhamine A, the first Daphniphyllum alkaloid with transannular effect, easily tautomerized under acidic or alkaline conditions, was isolated from the fruits of Daphniphyllum oldhami. The structure was elucidated by spectroscopic and computatio
Publikováno v:
Helvetica Chimica Acta. 91:2148-2152
Anthocephalusine A (1) and 3 beta-isodihydrocadambine 4-oxide (2) were isolated from the leaves of Anthocephalus chinensis (Rubiaceac), together with five known compounds. The structures were established by spectroscopic methods including 2D-NMR anal
Autor:
Hai-Yang Liu, Shun-Lin Li, Xiao-Jiang Hao, Suo Gao, Ning-Chuan Kong, Ying-Tong Di, Yu Zhang, Chun-Shun Li, Qiang Zhang
Publikováno v:
Helvetica Chimica Acta. 91:914-919
Two new yuzurine alkaloids, daphnoldines A (1) and B (2), possessing a rare four-ring system, were isolated from the fruits of Daphniphyllum oldhami. Their structures were established on the basis of extensive spectroscopic analyses. Daphnoldine A (1
Autor:
Shu-Zhen Mu, Jun-Song Wang, Yu Zhang, Ning-Chuan Kong, Hong-Ping He, Xiao-Jiang Hao, Suo Gao, Ying-Tong Di, Yue-Hu Wang, Chun-Shun Li
Publikováno v:
Tetrahedron Letters. 48:9104-9107
Two new Daphniphyllum alkaloids with daphnicyclidin-type skeleton, paxiphyllines A (1) and B (2) were isolated from the twigs and the leaves of Daphniphyllum paxianum. Paxiphylline A (1) has an unprecedented additional carbon from a biogenetic perspe
Publikováno v:
Journal of Natural Products. 70:1348-1351
Four new Daphniphyllum alkaloids, daphnimacropodines A-D (1-4), together with three known ones, daphnilactone B and daphnezomines H and I, were isolated from the fruits of Daphniphyllum macropodum. Their structures were determined by spectroscopic me
Publikováno v:
Helvetica Chimica Acta. 90:972-976
Two new iridoid alkaloids, daphmacropodosidines A (1) and B (2), together with two known ones, daphcalycinosidine B and caldaphnidine F, were isolated from the fruits of Daphniphyllum maropodum. Their structures were established by spectral methods,
Publikováno v:
ChemInform. 46
isolation, structure elucidation, and cytotoxicity of four new indole alkaloids, trigonoliimines A (I), B (IIb), C (IIa), and D (III)
Publikováno v:
Helvetica Chimica Acta. 89:515-519
Three new indole alkaloids, 11,12-de(methylenedioxy)danuphylline (1), methyl (2 beta,11 beta,12 beta,19 alpha)-6,7-didehydro-8,21-dioxo-11,21-cycloaspidospermidine-2-carboxylate (2), and (2 beta,5 beta)-aspidofractinin-16-ol (3) were isolated from Ko