| Structure Identification: |
| Australian Journal of Chemistry.1981;34(1):195 - 207. | | Alkaloids of Cryptocarya longifolia: X-Ray Crystal Structure of Thalifoline and Longifolonine.[Reference: WebLink] |
METHODS AND RESULTS:
The known alkaloids reticuline (1), coclaurine (3), N-methylcoclaurine (2), laurotetanine (7), N-methyl-laurotetanine (8), laurolitsine (10), isoboldine (9), norisocorydine (6), norargemonine (ll), bisnorargemonine (12), Thalifoline (16) and scoulerine (13) were isolated from the New Caledonian plant Cryptocarya longifolia together with two new bases, longifolidine (4) and longifolonine (14).
CONCLUSIONS:
Spectroscopic methods were used for identification and structural investigation, and X-ray crystallographic analysis to determine the structures of Thalifoline and longifolonine. | | Chemistry of Natural Compounds, 2017,53( 3) : 504–7. | | Isoquinoline Alkaloids from Michelia fuscata[Reference: WebLink] |
METHODS AND RESULTS:
Two new isoquinoline alkaloids, fuscatine A (1) and fuscatine B (2), along with 21 compounds including eight isoquinoline alkaloids, norThalifoline (3), Thalifoline (4), corydaldine (5), N-methylcorydaldine (6), (6,7-dimethoxyisoquinolinyl)-(4′-methoxyphenyl)-methanone (7),(6,7-dimethoxyisoquinolinyl)-(4′-hydroxyphenyl)-methanone (8), liriodenine (9), and corydine (10); two steroids, β-sitosterone and stigmasterone; six benzenoids, p-hydroxybenzaldehyde, p-hydroxybenzoic acid, 3,4-dimethoxybenzoic acid, methylparaben, syringic acid, and coniferyl aldehyde; one quinone 2,6-dimethoxy-p-benzoquinone, and one sesquiterpene, caryophyllene oxide, are isolated from the stems of Michelia fuscata (Magnoliaceae).
CONCLUSIONS:
These compounds were characterized and identified by physical and spectral analysis. |
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