| In vitro: |
| Molecules. 2014 Nov 3;19(11):17829-38. | | Antioxidant and anticancer aporphine alkaloids from the leaves of Nelumbo nucifera Gaertn. cv. Rosa-plena.[Pubmed: 25372397] |
METHODS AND RESULTS:
Fifteen compounds were extracted and purified from the leaves of Nelumbo nucifera Gaertn. cv. Rosa-plena.
These compounds include liriodenine (1), lysicamine (2), (-)-anonaine (3), (-)-asimilobine (4), (-)-caaverine (5), (-)-N-methylasimilobine (6), (-)-nuciferine (7), (-)-nornuciferine (8), (-)-roemerine (9), 7-hydroxydehydronuciferine (10) cepharadione B (11), β-sitostenone (12), stigmasta-4,22-dien-3-one (13) and two chlorophylls: pheophytin-a (14) and aristophyll-C (15). The anti-oxidation activity of the compounds was examined by antiradical scavenging, metal chelating and ferric reducing power assays. The results have shown that these compounds have antioxidative activity. The study has also examined the antiproliferation activity of the isolated compounds against human melanoma, prostate and gastric cancer cells. The results shown that 7-hydroxydehydronuciferine (10) significantly inhibited the proliferation of melanoma, prostate and gastric cancer cells.
CONCLUSIONS:
Together, these findings suggest that leaves of Nelumbo nucifera Gaertn. cv. Rosa-plena are a good resource for obtaining the biologically active substances with antioxidant properties. | | Planta Med. 2000 Apr;66(3):251-6. | | Anti-platelet aggregation alkaloids and lignans from Hernandia nymphaeifolia.[Pubmed: 10821052 ] |
METHODS AND RESULTS:
A new aporphine, N-(N-methylcarbamoyl)-O-methyl-bulbocapnine (1), together with seven known compounds, (-)-5'-methoxypodorhizol (2), a mixture of beta-sitosterone (3) and Stigmasta-4,22-dien-3-one (4), a mixture of 3 beta-hydroxystigmast-5-en-7-one (5) and 3 beta-hydroxystigmasta-5,22-dien-7-one (6), and a mixture of 6 alpha-hydroxystigmast-4-en-3-one (7) and 6 alpha-hydroxyStigmasta-4,22-dien-3-one (8), were isolated in continuing studies on the trunk bark of Formosan Hernandia nymphaeifolia.
CONCLUSIONS:
The structures of these compounds were determined through spectral analyses. In addition, the previously reported six alkaloids, laurotetanine, oxohernagine, thalicarpine, reticuline, (+)-vateamine-2'-beta-N-oxide, (+)-hernandaline and six lignans, (+)-epiaschantin, (+)-epimagnolin, (+)-epiyangambin, (-)-hernone, (-)-yatein, (-)-deoxypodophyllotoxin were demonstrated to have anti-platelet aggregation activity. |
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