39 results on '"Plants analysis"'
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2. Isolation of flindersiamine, isoflindersiamine, and a new alkaloid, heliparvifoline, from Helietta parvifolia (Rutaceae).
3. Alkaloids from Lupinus argenteus var. stenophyllus.
4. Cactus alkaloids. XXI. Beta-phenethylamines from Dolichothele sphaerica.
5. Biological and phytochemical evaluation of plants. 13. Preliminary estimation of analgesic activity of rhazinilam, a novel alkaloid isolated from Aspidosperma quebracho-blanco leaves.
6. Alkaloids of Nelumbo lutea (Wild.) pers. (Nymphaeaceae)
7. Cactus alkaloids XXXIII: beta-phenethylamines from the Guatemalan cactus Pilosocereus maxonii.
8. Alkaloids of Glaucium flavum Grantz, populations Isfahan and Kazerun.
9. Fluorodensitometric assay of 6H-pyrido[4,3-b]-5,11-dimethylcarbazoles (ellipticine and derivatives) biosynthesized by Ochrosia elliptica cultures in vitro.
10. Alkaloids of Glaucium oxylobum Boiss and Buhse, Population Ab-Ali.
11. Catharanthus alkaloids XXXII: isolation of alkaloids from Catharanthus trichophyllus roots and structure elucidation of cathaphylline.
12. The quantitative determination of some mitragyna oxindole alkaloids after separation by thin-layer chromatography. IV. Comparison of ultra-violet spectrophotometry, colorimetry and densitometry as methods for the quantitative determination of oxindole alkaloids in plant material.
13. Pulchellidine, a novel sesquiterpene alkaloid isolated from Gaillardia pulchella Foug.
14. Anomalous isolation of an active antitumor alkaloid from a fraction of Catharanthus lanceus devoid of anticancer activity.
15. The separation of the minor alkaloids of Strychnos nux vomica L.
16. Alkaloids from Cassia carnaval speg.: cassaine and carnavaline (1).
17. Catharanthus alkaloids. XXVI. Isolation of cathanneine, a new alkaloid from Catharanthus lanceus.
18. Chemical constituents of Cocculus carolinus D.C. (Menispermaceae).
19. Alkaloids of tylophora. 3. New alkaloids of Tylophora indica (Burm) Merrill and Tylophora dalzellii Hook. f.
20. Selected pharmacological studies of an alkaloidal extract of Banisteriopsis quitensis.
21. Loroquin, a new necine isolated from Urechites karwinsky Mueller (1-hydroxy-methylene-7-keto-dihydropyrrolizine).
22. Separation of the major alkaloids of Peganum harmala by high voltage ionophoresis.
23. Cactus alkaloids. XII. -Phenethylamine alkaloids of the genus Coryphantha.
24. Cactaceae alkaloids. VII. Alkaloids of Echinocereus merkeri.
25. Investigations of Philippine plants for alkaloids, antimalarial agents, and antineoplastic agents.
26. Phytochemical investigation of Manitoba plants. II. A gas-liquid chromatographic screening technique for the identification of the alkaloids of Phalaris species.
27. Cactus alkaloids. XV. -Phenethylamine derivatives from Coryphantha macromris var. runyonii.
28. Cactus alkaloids. 13. Isolation of (-)-normacromerine from Coryphantha macromeris var. runyonii.
29. Dolicotheline, a novel imidazole alkaloid from Dolichothele sphaerica.
30. Alkaloids of Peumus boldus. Isolation of laurotetanine and laurolitsine.
31. Correlations between hRf values on thin-layer chromatograms and chemical structure of some tertiary Strychnos alkaloids.
32. A new benzylisoquinoline alkaloid: N-methylpalaudinium chloride.
33. Acutuminine, a new alkaloid from the leaves of Menispermum dauricum DC.
34. (20 beta H, 22 alpha O, 25R)-5 alpha-spirostan-3 beta-amino-6 alpha-ol and its isomers.
35. Cactus alkaloids. X. Isolation of hordenine and N-methyltyramine from Ariocarpus kotschoubeyanus.
36. Comparative study of a direct and a new indirect gas-liquid chromatographic procedure for the estimation of water in natural products.
37. Chemical constituents of the bright orange aphid, Aphis nerii fonscolombe. I. Neriaphin and 6-hydroxymusizin 8-O-beta-D-glucoside.
38. Alkaloids of Tylophora. II. Structural studies.
39. Cactus alkaloids. XVI. Isolation and identification of alkaloids in Coryphantha ramillosa.
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