Results 81 to 90 of about 1,375 (189)

DETERMINATION OF VINDOLINE AND RUTIN CONTENT IN FIVE DIFFERENT MORPHOTYPES OF CATHARANTHUS ROSEUS LEAVES USING HPLC [PDF]

open access: yes, 2019
Objective: To determine total phenolic and flavonoids contents and also quantify vindoline and rutin in different morphotypes of Catharanthus roseus using High-performance liquid chromatography (HPLC) method.
KAPOOR, MANISH, RANI, JYOTI
core   +1 more source

A Simplified Procedure for Indole Alkaloid Extraction from Catharanthus roseus Combined with a Semi-synthetic Production Process for Vinblastine

open access: yesMolecules, 2007
Dried leaves of Catharanthus roseus were extracted with aqueous acidic 0.1 M solution of HCl. Alkaloid-embonate complexes were obtained as precipitates by treating the extract with an alkaline (NaOH) solution of embonic acid (4,4-methylene-bis-3 ...
Marja-Liisa Riekkola   +4 more
doaj   +1 more source

Antidiabetic and Antioxidant Properties of Alkaloids from Catharanthus roseus (L.) G. Don

open access: yesMolecules, 2013
Catharanthus roseus (L.) G. Don is a herbal plant traditionally used by local populations in India, South Africa, China and Malaysia to treat diabetes. The present study reports the in vitro antioxidant and antidiabetic activities of the major alkaloids ...
Won Fen Wong   +8 more
doaj   +1 more source

Triarylaminium Radical Cation Promoted Coupling of Catharanthine with Vindoline: Diastereospecific Synthesis of Anhydrovinblastine and Reaction Scope

open access: yes, 2019
A new triarylaminium radical cation promoted coupling of catharanthine with vindoline is disclosed, enlisting tris­(4-bromophenyl)­aminium hexachlororantimonate (BAHA, 1.1 equiv) in aqueous 0.05 N HCl/trifluoroethanol (1–10:1) at room temperature (25 °C),
Dale L. Boger (1306542)   +3 more
core   +3 more sources

Radiolytically degraded sodium alginate enhances plant growth, physiological activities and alkaloids production in Catharanthus roseus L.

open access: yesJournal of Radiation Research and Applied Sciences, 2015
Catharanthus roseus (L.) G. Don (Family Apocynaceae) is a medicinal plant that produces indole alkaloids used in cancer chemotherapy. The anticancerous alkaloids, viz. vinblastine and vincristine, are mainly present in the leaves of C. roseus.
M. Naeem   +7 more
doaj   +1 more source

Total Synthesis of (−)- and ent-(+)-Vindoline

open access: yes, 2016
Two exceptionally concise total syntheses of (−)- and ent-(+)-vindoline are detailed enlisting a diastereoselective tandem [4 + 2]/[3 + 2] cycloaddition of a 1,3,4-oxadiazole.
Dale L. Boger (1306542)   +5 more
core   +1 more source

Enhanced catharanthine and vindoline production in suspension cultures of by ultraviolet-B light-4

open access: yes, 2011
Ted and harvested at indicated times. , Catharanthine and , vindoline accumulation was detected by HPLC as described in materials and methods. Values are represented as the means ± SD (n = 3).Copyright information:Taken from "Enhanced catharanthine and ...
Chelliah Jayabaskaran (92029)   +1 more
core   +1 more source

Laccase-catalyzed coupling of catharanthine and vindoline : an efficient approach to the bisindole alkaloid anhydrovinblastine

open access: yes, 2009
The efficient enzyme-catalyzed coupling of the indolic alkaloids catharanthine and vindoline was carried out by exploiting the oxidoreductases laccases and atmospheric oxygen.
C. Chirivì   +6 more
core   +1 more source

Experimental and Computational NMR Studies of Large Alkaloids Exemplified with Vindoline Trimer: Advantages and Limitations

open access: yes
International audienceThe complete 1 H and 13 C NMR assignments of a trimeric vindoline together with its individual components, dimeric vindolicine and monomeric vindoline, are performed based on a thorough analysis of the ROESY, COSY, HSQC, and HMBC ...
Semenov, Valentin A.   +3 more
core   +1 more source

Stable Vindoline Production in Transformed Cell Cultures of Catharanthus roseus

open access: yes, 2016
Catharanthus roseus L. (G. Don) leaf disks were transformed by cocultivation with seven strains of Agrobacterium tumefaciens and Agrobacterium rhizogenes. Four distinct transformed cell lines were obtained with A.
Joell J. Gills (208407)   +4 more
core   +1 more source

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