scholarly journals Sesquiterpene lactones from Centaurealinifolia Vahl

1978 ◽  
Vol 56 (4) ◽  
pp. 491-494 ◽  
Author(s):  
A. G. González ◽  
J. Bermejo ◽  
J. M. Amaro ◽  
G. M. Massanet ◽  
A. Galindo ◽  
...  
Keyword(s):  
Sesquiterpene Lactones ◽  
Chemical Methods ◽  
Aerial Parts ◽  
Physical And Chemical

Three new sesquiterpene lactones, linichlorins A, B, and C were isolated from the aerial parts of Centaurealinifolia Vahl and their structures were determined by physical and chemical methods. The sesquiterpene lactones chlorohyssopifolins A, B, C, D, E, aguerin B, and vahlenin were also isolated from the same plant.

Sesquiterpene Lactones from Pyrethrum Flowers

1971 ◽  
Vol 49 (12) ◽  
pp. 2103-2110 ◽  
Author(s):  
Raymond W. Doskotch ◽  
Farouk S. El-Feraly ◽  
Charles D. Hufford
Keyword(s):  
Sesquiterpene Lactones ◽  
Hydrogenation Product ◽  
Hydroxyl Group ◽  
Chemical Methods ◽  
Physical And Chemical ◽  
Chrysanthemum Cinerariaefolium

Three new sesquiterpene lactones, dihydro-β-cyclopyrethrosin (3), chrysanin (4), and chrysanolide (5) were isolated from the flowers of Chrysanthemum cinerariaefolium and their structures determined by physical and chemical methods. The configuration at C-1 of pyrethrosin (2) was established as R by its conversion to dihydro-β-cyclopyrethrosin (3), a hydrogenation product of β-cyclopyrethrosin (1), which had the C-1 hydroxyl group assigned by the Horeau procedure and Brewster's benzoate method. The preparation and properties of the C-11 epimers, 12 and 17, of dihydropyrethrosin are reported and their stereochemistry established.

Sesquiterpene Lactones and Flavonoids from the aerial parts of Anthemis melanolepis L

Planta Medica ◽  
2006 ◽  
Vol 72 (11) ◽  
Author(s):  
H Skaltsa ◽  
V Saroglou ◽  
Z Kypriotakis
Keyword(s):  
Sesquiterpene Lactones ◽  
Aerial Parts

Sesquiterpene lactones from the aerial parts of Anthemis melanolepis L

Planta Medica ◽  
2007 ◽  
Vol 73 (09) ◽  
Author(s):  
V Saroglou ◽  
A Karioti ◽  
H Skaltsa
Keyword(s):  
Sesquiterpene Lactones ◽  
Aerial Parts

Modification of Collagen for Biomedical Applications: A Review of Physical and Chemical Methods

2016 ◽  
Vol 20 (17) ◽  
pp. 1797-1812 ◽  
Author(s):  
Xiaoyue Yu ◽  
Cuie Tang ◽  
Shanbai Xiong ◽  
Qijuan Yuan ◽  
Zhipeng Gu ◽  
...  
Keyword(s):  
Biomedical Applications ◽  
Chemical Methods ◽  
Physical And Chemical

Biomedical Applications and Patents on Metallic Nanoparticles

2020 ◽  
Vol 10 ◽  
Author(s):  
Geetanjali Singh ◽  
Pramod Kumar Sharma ◽  
Rishabha Malviya
Keyword(s):  
Metallic Nanoparticles ◽  
Biomedical Applications ◽  
Size Range ◽  
Biomedical Application ◽  
Chemical Reduction ◽  
Chemical Methods ◽  
Future Challenges ◽  
Biological Methods ◽  
Cancer Diagnosis And Therapy ◽  
Physical And Chemical

Aim/Objective: The author writes the manuscript by reviewing the literatures related to the biomedical application of metallic nanoparticles. The term metal nanoparticles are used to describe the nanosized metals with the dimension within the size range of 1-100 nm. Methods: The preparation of metallic nanoparticles and their application is an influential area for research. Among various physical and chemical methods (viz. chemical reduction, thermal decomposition, etc.) for synthesizing silver nanoparticles, biological methods have been suggested as possible eco-friendly alternatives. The synthesis of metallic nanoparticles is having many problems inclusive of solvent toxicity, the formation of hazardous byproducts and consumption of energy. So it is important to design eco-friendly benign procedures for the synthesis of metallic nanoparticles. Results: From the literature survey, we concluded that metallic nanoparticles have applications in the treatment of different diseases. Metallic nanoparticles are having a great advantage in the detection of cancer, diagnosis, and therapy. And it can also have properties such as antifungal, antibacterial, anti-inflammatory, antiviral and anti-angiogenic. Conclusion: In this review, recent upcoming advancement of biomedical application of nanotechnology and their future challenges has been discussed.

scholarly journals Decreasing Oxalate Levels in Kimpul Tubers (Xanthosoma sagittifolium) by Physical and Chemical Methods

2021 ◽  
Vol 667 (1) ◽  
pp. 012015
Author(s):  
I Sulaiman ◽  
C Annisa ◽  
Y M Lubis ◽  
Z F Rozali ◽  
S Noviasari ◽  
...  
Keyword(s):  
Chemical Methods ◽  
Xanthosoma Sagittifolium ◽  
Physical And Chemical

scholarly journals Stem Lettuce and Its Metabolites: Does the Variety Make Any Difference?

Foods ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 59
Author(s):  
Janusz Malarz ◽  
Klaudia Michalska ◽  
Anna Stojakowska
Keyword(s):  
Chemical Composition ◽  
Plant Material ◽  
Methanolic Extract ◽  
Sesquiterpene Lactones ◽  
Scavenging Activity ◽  
Nmr Analysis ◽  
Caffeic Acid Derivatives ◽  
Aerial Parts ◽  
Dpph Scavenging Activity ◽  
Dpph Scavenging

The objective of the present study was to characterize chemical composition of hitherto unexamined aerial parts of Lactuca sativa var. angustana cv. Grüner Stern. In contrast to leafy and head varieties of the lettuces, asparagus lettuce grown in Europe is much less studied. Fractionation of a methanolic extract from leaves of L. sativa cv. Grüner Stern, supported with HPLC/DAD and 1H NMR analysis, led to the isolation and/or identification of numerous terpenoid and phenolic compounds, including five apocarotenoids—(-)-loliolide, (+)-dehydrovomifoliol, blumenol A, (6S,9S)-vomifoliol, and corchoionoside C; three sesquiterpene lactones; two lignans—((+)-syringaresinol and its 4-O-β-glucoside); five caffeic acid derivatives; and three flavonoids. Some of the compounds, to the best of our knowledge, have never been isolated from L. sativa before. Moreover, monolignols, phenolic acids and a tryptophan-derived alkaloid were found in the analyzed plant material. Stems, leaves and shoot tips of the asparagus lettuce were examined to assess their phenolics and sesquiterpene lactone content as well as DPPH scavenging activity. Another stem lettuce—L. sativa var. angustana cv. Karola, two cultivars of leafy lettuces and one species of wild lettuce—L. serriola, were also examined as a reference material using HPLC/DAD. The results have been discussed regarding our previous studies and the literature data available.

COMPARAISON DE DIVERSES METHODES DE CASTRATION ET DE STERILISATION DES AGNEAUX: I. INFLUENCE DE CES METHODES SUR LA CROISSANCE, L’EFFICIENCE ALIMENTAIRE, LE RENDEMENT A L’AHATTAGE ET LA RENTABILITE

1971 ◽  
Vol 51 (3) ◽  
pp. 579-589 ◽  
Author(s):  
J. M. BAILLARGEON ◽  
J. P. LEMAY ◽  
W. B. HOLTMANN ◽  
L. A. CHARETTE
Keyword(s):  
Feed Efficiency ◽  
Intramuscular Injection ◽  
Cadmium Chloride ◽  
Complete Removal ◽  
Chemical Methods ◽  
Treatment Groups ◽  
Dressing Percentage ◽  
Breeding Groups ◽  
Physical And Chemical ◽  
Daily Gain

An experiment was conducted to compare various physical and chemical methods of castration of lambs at 15 and 60 days of age. Their effects on body growth, feed efficiency, dressing percentage and profitability were studied. At birth 100 lambs were divided among the 16 different treatments according to sex and the following breeding groups: Suffolk, North Country Cheviot, two-breed cross and three-breed cross. The different methods of castration were: complete removal of the testicles, Burdizzo, elastrator and partial castration. The sterilization methods consisted of intramuscular, intratesticular and intraveinous injection of cadmium chloride. All lambs were weaned at 30 days of age and placed in individual pens. They were subjected to similar environmental conditions and shipped to slaughter at approximately 45 kg body weight. Significant differences were observed among breeds, sexes and the various castration methods for daily gain, feed efficiency, days required to reach market and profitability. Age at castration did not have any important effect ort the variables measured. Superior gains, feed efficiency and profitability were observed for the partially castrated group, for the lambs that received an intramuscular injection of cadmium chloride and for the non-castrated males. All treatment groups involving males were superior to the females for the characters studied except for dressing percentage.

New Erythroxane-Type Diterpenoids from Fagonia boveana (Hadidi) Hadidi & Graf

2003 ◽  
Vol 58 (1-2) ◽  
pp. 23-32 ◽  
Author(s):  
Sahar R. Gedara ◽  
Osama B. Abdel-Halim ◽  
Saleh H. El-Sharkawy ◽  
Osama M. Salama ◽  
Thomas W. Shier ◽  
...  
Keyword(s):  
Herpes Simplex ◽  
Protein Tyrosine Kinase ◽  
Biological Activities ◽  
Aerial Parts ◽  
Sesquiterpene Alcohol ◽  
Trimethyl Ether ◽  
Chemical Correlation ◽  
Physical And Chemical ◽  
Active Cancer

The aerial parts of Fagonia boveana afforded two new erythroxane-type diterpenes, 3β, 15, 16-trihydroxy-erythrox-4(18)-ene (2) and 15, 16-dihydroxy-cis-ent-erythrox-3-ene (fagonene) (3) together with two known ones; 16-O-acetylfagonone (1) and 7β-hydroxy fagonene (8). Also a new guaiane sesquiterpene alcohol, 6,10-epoxy-4α-hydroxy guaiane type sesquiterpene (4) has been isolated In addition three 8-methoxy flavonols, 8-methoxy-quercetin-3, 7, 3′-trimethyl ether (ternatin) (5), gossypetin, 3, 8, 3′, 4′ tetramethyl ether (6) and herbacetin- 3, 8-dimethyl ether (7) were also isolated. The structures of the isolated compounds have been determined on the basis of spectroscopic evidences as well as physical and chemical correlation with known compounds. On performing different assays for biological activities, 6 displayed significant cytotoxic activity against KA3IT and NIH3T3 cell lines, 8 was the most active antiviral against Herpes simplex type 1 while 7 was the most active cancer-preventive agent using protein-tyrosine kinase inhibitory method

scholarly journals Genicunolide A, B and C: three new triterpenoids from Euphorbia geniculata

2015 ◽  
Vol 11 ◽  
pp. 2707-2712 ◽  
Author(s):  
Alia Farozi ◽  
Javid Ahmad Banday ◽  
Shakeel Ahmad Shah
Keyword(s):  
Chemical Methods ◽  
Aerial Parts ◽  
Euphorbia Geniculata

Three new triterpenoids, designated as genicunolide A (1), B (2) and C (3), along with friedelin (4) and friedelinol (5), were isolated from the aerial parts of Euphorbia geniculata. They were characterized as 1β-acetoxy-3β-hydroxy-11α,12α-oxidotaraxer-14-ene, 1β,3β-diacetoxy-21α-hydroxy-11α,12α-oxidotaraxer-14-ene and 3β,9α,20α-trihydroxy-Ψ-taraxast-5-ene, respectively, by spectral and chemical methods.

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