Two novel isoquinoline alkaloids from the seedling of Corydalis decumbens

[Display omitted] Two new isoquinoline alkaloids, decumbensine (1) and decumbendine (2), together with nine known compounds including tetrahydropalmatine (3), bicuculline (4), allocryptopine (5), bulbocapine (6), protopine (7), kikemanine (8), decumbenine B (9), decumbenine C (10), and muramine (11)...

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Bibliographic Details
Published in:Tetrahedron letters 2015-01, Vol.56 (1), p.225-228
Main Authors: Chang, Jun, Chu, Zhi-Bo, Song, Jiao, Jin, Lin, Sun, Xun
Format: Article
Language:English
Subjects:
Alkaloids
Corydalis decumbens
Decumbendine
Decumbensine
Isoquinoline alkaloid
Nuclear magnetic resonance
Papaveraceae
Pathways
Spectroscopic analysis
Tetrahedrons
Two dimensional
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Summary:[Display omitted] Two new isoquinoline alkaloids, decumbensine (1) and decumbendine (2), together with nine known compounds including tetrahydropalmatine (3), bicuculline (4), allocryptopine (5), bulbocapine (6), protopine (7), kikemanine (8), decumbenine B (9), decumbenine C (10), and muramine (11) were isolated from the seedling of Corydalis decumbens (Thunb.) Pers. (Papaveraceae). Their structures were decisively elucidated by spectroscopic analysis including 1D and 2D NMR techniques. Furthermore, the biogenetic pathways of two new compounds were proposed, which would provide valuable information for further understanding of the isoquinoline alkaloids of C. decumbens.
ISSN:0040-4039
1873-3581
DOI:10.1016/j.tetlet.2014.11.077