Results 31 to 40 of about 85 (58)

Microbiological and Chemical Transformations of Argentatin B

open access: yesZeitschrift Fur Naturforschung - Section C Journal of Biosciences, 2003
Argentatin B is a naturally occurring tetracyclic triterpene isolated from Parthenium argentatum x P. tomentosa. It was microbiologically transformed to 16, 24-epoxycycloartan-3α, 25- diol, (isoargentatin D), by Nocardia corallina var. taoka ATCC 31338, Mycobacterium species NRRL B3683 and Septomyxa affinis ATCC 6737. The later microbe also produced 16,
Roberto Martínez   +4 more
exaly   +11 more sources

Agronomic practices impact argentatin content in guayule (Parthenium argentatum A. Gray)

open access: yesIndustrial Crops and Products, 2023
There is increasing interest in the development and exploitation of argentatin compounds from guayule (Parthenium argentatum A. Gray), which are known to have several beneficial effects on human health. However, limited information is available about the best experimental approaches for the analysis of argentations and the potential influence of ...
Rosario Sánchez-Gómez   +2 more
exaly   +3 more sources

Microbial Transformation of a Mixture of Argentatin A and Incanilin

open access: yesZeitschrift Fur Naturforschung - Section C Journal of Biosciences, 2002
The biotransformation of a mixture of argentatin A (20%) 1 and incanilin (80%) 2 by Gibberella suabinetti ATCC 20193 and Septomyxa affinis ATCC 6737 demonstrated the conversion of incanilin to 16β-hydroxylanosta-2, 8, 23-triene, while argentatin A did not react.
Joseph J Hoffmann
exaly   +3 more sources

UHPLC-HRMS profile and accumulation of argentatins in stems of 27 accessions of guayule (Parthenium argentatum A. Gray) and its hybrids along the growth cycle

open access: yesIndustrial Crops and Products, 2022
The argentatins are the most abundant compounds in guayule resin with promising potential for the biopharmaceutical industry. However, their accumulation along the vegetative cycle of the plant and their quantification in different guayule accessions has not been assessed.
Amaya Zalacain Aramburu   +2 more
exaly   +3 more sources
Some of the next articles are maybe not open access.

SYNTHESIS OF CARBENOXOLONE ANALOGS FROM ARGENTATIN B

Organic Preparations and Procedures International, 1993
Martinez R, Mariano Martínez-Vázquez
exaly   +2 more sources

New strategies to analyze argentatins A and B in guayule (Parthenium argentatum, A. Gray)

Talanta, 2023
There is considerable interest in the exploitation of compounds belonging to the triterpenoid family from guayule (Parthenium argentatum, A. Gray), as they offer several beneficial effects to human health. The most abundant triterpenoids in guayule resin are the argentatins, which are currently analyzed by labor-intensive and time-consuming techniques.
Beatriz Gallego   +6 more
openaire   +3 more sources

Evaluation of the cytotoxicity, cytostaticity and genotoxicity of Argentatins A and B from Parthenium argentatum (Gray)

Life Sciences, 2005
Argentatins A and B are abundant triterpenes present in Parthenium argentatum. Both compounds have shown cytotoxic properties on K562, MCF-7, PC-3, HCT-15 and U251 human cancer cell lines. Furthermore the cytotoxic, cytostatic and genotoxic effects of the argentatins on proliferating lymphocytes were evaluated using cytokinesis-block micronucleus test.
Maria TERESA Ramirez   +2 more
exaly   +3 more sources

ChemInform Abstract: Synthesis of Pyrazole Analogues from Argentatin B.

ChemInform, 1995
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
R. MARTINEZ   +4 more
openaire   +1 more source

ChemInform Abstract: Synthesis of Carbenoxolone Analogues from Argentatin B.

ChemInform, 1994
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
R. MARTINEZ   +3 more
openaire   +1 more source

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