Results 101 to 110 of about 253,123 (156)
, 2012 [[abstract]]Plants that contain pyrrolizidine alkaloids and pyrrolizidine alkaloid N-oxides are widely distributed in the world. These plants are probably the most common poisonous plants affecting livestock, wildlife, and humans.
Peter. P. Fu; Ming W. Chou; Qingsu Xia; Ya-Chen Yang; Jian Yan; Daniel R. Doerge; Po-Cheun Chan
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The synthesis of pyrrolizidine alkaloids
, 1982 The pyrrolizidine alkaloids constitute an exceptionally large class of naturally occurring compounds. A number of the alkaloids are hepatotoxic and carcinogenic, but some derivatives have potentially useful physiological properties;A promising but seldom
Neuenschwander, Kent
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The pyrrolizidine alkaloids of Senecio chrysocoma and Senecio paniculatus [PDF]
, 1996 In order to compare the pyrrolizidine alkaloid content of two closely related species, Senecio chrysocoma and S. paniculatus, nine populations of plants distributed between the two species, were examined.
Logie, Catherine Gwynedd
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BMC Complementary Medicine and TherapiesBackground Herbal products have been used for gas pains in children for many years. However, the quality of herbal products used in children and the presence of contamination in the products are controversial.
Semih Bulut +3 more
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Natural Product Communications, 2013 Although Senecio species are known as sources of potentially toxic pyrrolizidine alkaloids (PAs), some species of this genus are traditionally used as remedies, notably in Algeria.
Soukaina Tidjani +6 more
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Pyrrolizidine alkaloids in honey: determination with liquid chromatography-mass spectrometry method
Journal of Veterinary Research, 2018 Pyrrolizidine alkaloids (PAs) are probably the most widespread toxins of natural origin. More than 6,000 plant species produce these toxic compounds. Bees can forage on flowers of plants producing PAs, which leads to contamination of honey with the toxic
Kowalczyk Ewelina, Kwiatek Krzysztof
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Improved Method for Isolation of Lycopsamine from Roots of Comfrey ()
Natural Product Communications, 2012 An improved method for the isolation and purification of pyrrolizidine alkaloids from comfrey ( Symphytum officinale L.) roots was developed, introducing very fast, selective and ion residue-free reduction of N -oxides followed by ion-exchange ...
Damjan Janeš +2 more
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Pyrrolizidine Alkaloids: the underestimated natural toxicants
RevSALUS, 2022 Ana, Cláudia Ribeiro, Sandra Leal
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Frontiers in Chemical BiologyThe food control of tropane and pyrrolizidine alkaloids has become in recent years in Europe one of the main priorities within the food safety field due to the exponential increase in food alerts related to the concerning levels of these natural toxins ...
Natalia Casado +4 more
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Synthesis and Biosynthesis of Pyrrolizidine Alkaloids [PDF]
, 1982 This work is divided into five parts: (a) Synthesis of macrocyclic diester alkaloid analogues, (b) Synthesis of a macrocyclic diester alkaloid and elucidation of its absolute stereochemistry, (c) Structural studies, (d) Synthetic approaches to ...
Devlin, James Alastair
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