Results 31 to 40 of about 229,471 (214)
Molecules, 2005 The intramolecular aminomercuration of γ-alkenylamines 1a, 1b and 4 was shown to afford the 5-endo-trig cyclized product exclusively in good yield. The utility of pyrrolidine derivatives thus obtained from D-glucose derived γ-alkenylamines 1a and ...
S. Jachak, D. Dhavale
doaj +1 more source
Diversity, 2020 Many plants produce secondary metabolites (PSMs) with antiviral activities. Among the antiviral PSMs, lipophilic terpenoids in essential oils can disturb the lipid envelope of viruses.
M. Wink
semanticscholar +1 more source
Cytotoxicity and bacterial membrane destabilization induced by Annona squamosa L. extracts
Anais da Academia Brasileira de Ciências, 2017 This study aimed to further investigate the cytotoxicity against tumor cell lines and several bacterial strains of Annona squamosa and its mode of action. Methanol extracts of A. squamosa leaves (ASL) and seeds (ASS) were used.
NÍCOLAS C.C. PINTO +10 more
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Plants to Polyelectrolytes: Theophylline Polymers and their Microsphere Synthesis [PDF]
Macromol. Rapid Commun. 2017, 38 (8), 1600748, 2017 To extend fossil oil supplies, sustainable feed stocks for the production of useful reagents and polymers should be harnessed. In this regard, chemicals derived from plants are excellent candidates. While the vast majority of plant sources used for polymer science only contain CxHyOz, alkaloids such as caffeine, nicotine, and theophylline possess ...
arxiv +1 more source
Alkaloids from Plants with Antimalarial Activity: A Review of Recent Studies
Evidence-Based Complementary and Alternative Medicine, 2020 Malaria is one of the major health problems in developing countries. The disease kills a large number of people every year and also affects financial status of many countries.
P. Uzor
semanticscholar +1 more source
Tropane Alkaloids: Chemistry, Pharmacology, Biosynthesis and Production
Molecules, 2019 Tropane alkaloids (TA) are valuable secondary plant metabolites which are mostly found in high concentrations in the Solanaceae and Erythroxylaceae families.
Kathrin Laura Kohnen-Johannsen +1 more
semanticscholar +1 more source
Molecules, 2019 The strain Streptomyces osmaniensis CA-244599 isolated from the Comoros islands was submitted to liquid-state fermentation coupled to in situ solid-phase extraction with amberlite XAD-16 resin. Elution of the trapped compounds on the resin beads by ethyl
Mamdouh N. Samy +10 more
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Journal of Natural Products, 2020 Two separate commercial products of kratom [Mitragyna speciosa (Korth.) Havil. Rubiaceae] were used to generate reference standards of its indole and oxindole alkaloids.
L. Flores-Bocanegra +9 more
semanticscholar +1 more source
Molecules, 2014 Several ligands can bind to the non-canonical G-quadruplex DNA structures thereby stabilizing them. These molecules can act as effective anticancer agents by stabilizing the telomeric regions of DNA or by regulating oncogene expression.
Roberta Rocca +8 more
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TheScientificWorldJournal, 2017 The aim of this study was to evaluate the antioxidant activity, screening the phytogenic chemical compounds, and to assess the alkaloids present in the E. intermedia to prove its uses in Pakistani folk medicines for the treatment of asthma and bronchitis.
R. Gul +4 more
semanticscholar +1 more source