Morphinandienone and aporphine alkaloids from Corydalis decumbens
作者:Chun-Lei Zhang、Qi-Long Huang、Juan Chen、Fang Zhao、Fan Zhang、Zheng-Yu Cao
DOI:10.1016/j.phytol.2018.11.011
日期:2019.2
Phytochemical examination of Corydalis decumbens has afforded two new morphinandienone alkaloids, namely, (-)-pallidine N-oxide (1) and (-)-salutaridine N-oxide (2), together with one known analogue, (-)-pallidine (3), and three known aporphine alkaloids (4−6). Their structures were elucidated via comprehensive spectroscopic analysis and chemical correlation. This study represents the first isolation
Characterization of Isoquinoline Alkaloids from <i>Neolitsea sericea</i> var. <i>aurata</i> by HPLC-SPE-NMR
作者:Shoei-Sheng Lee、Yi-Chun Lai、Chien-Kuang Chen、Li-Hong Tseng、Chen-Yu Wang
DOI:10.1021/np060636p
日期:2007.4.1
Application of the HPLC-SPE-NMR technique to identify the alkaloids in an EtOH extract of the leaves of Neolitsea sericea var. aurata led to the characterization of 14 alkaloids while consuming plant material equivalent to 1.1 g. Of these, seven are N-oxides, four of which are new, namely, 9S,17S-pallidine Nalpha-oxide (6), 1S,2S-reticuline Nalpha-oxide (8), 6R,6aS-boldine Nbeta-oxide (9), and 6S,