Results 111 to 120 of about 1,659 (163)

The amaryllidaceae alkaloids

Tetrahedron, 1968
Abstract On the basis of the conformations and the established absolute configurations of lycorine (I) and dihdyrolycorine (IX), discussions on quaternization of the alkaloids permit the assignment of the absolute configurations of lycorine α- and β-methiodide, (II and III), and dihydrolycorine methiodide (X), respectively.
K. Kotera, Y. Hamada, R. Nakane
  +4 more sources

A Synthesis of the Amaryllidaceae Alkaloid Pratosine

Journal of Natural Products, 1996
A synthesis of pratosine by thermolysis of the Michael adduct obtained from 5-hydroxy-8,9-dimethoxy-6(5H)-phenanthridone and methyl propiolate is described.
M M, Pereira, S, Prabhakar, A M, Lobo
openaire   +2 more sources

Amaryllidaceae and Sceletium alkaloids

Natural Product Reports, 2019
Recent progress on the isolation, identification, biological activity and synthetic studies of Amaryllidaceae alkaloids, as well as the structurally close alkaloids from the Sceletium genus, published from July 2015 to June 2017 are reviewed.
Zhong Jin, Guangmin Yao
openaire   +2 more sources

Cytotoxic Activity of Amaryllidaceae Alkaloids

Planta Medica, 1995
25 Amaryllidaceae alkaloids belonging to different skeletal types were evaluated for their cytotoxic activity against one murine non-tumoral cell line (LMTK) and two human tumoral cell lines (Molt4 and HepG2) according to established protocols. Significant differences of activity related with the type of skeleton of the tested alkaloids could be ...
B, Weniger   +7 more
openaire   +2 more sources

Amaryllidaceae and Sceletium alkaloids

Natural Product Reports, 2003
The latest progress on the isolation, identification, biological activity and synthetic studies of the structurally diverse alkaloids from plants of family Amaryllidaceae has been summarized in this review.
openaire   +8 more sources

Total Synthesis of Amaryllidaceae Alkaloid Buflavine

The Journal of Organic Chemistry, 2002
A concise synthesis of the amaryllidaceae alkaloid buflavine (1) and its regioisomer (2) involving sequential Meyers' biaryl coupling, enecarbamate formation, and hydrogenation followed by ultimate intramolecular reductive amination is presented.
Christophe, Hoarau   +3 more
openaire   +2 more sources

Chemodiversity, chemotaxonomy and chemoecology of Amaryllidaceae alkaloids

2020
The Amaryllidaceae alkaloids are a distinctive chemotaxonomic feature of the subfamily Amaryllidoideae of the family Amaryllidaceae, which consists of 59 genera and >800 species distributed primarily in tropical and subtropical areas. Since the first isolation, ca.
Berkov, Strahil   +3 more
openaire   +3 more sources

Apoptosis-Inducing Effects of Amaryllidaceae Alkaloids

Current Medicinal Chemistry, 2016
The Amaryllidaceae occupies a privileged status amongst medicinal plants in having delivered the Alzheimer's drug galanthamine to the clinical market. Following its resounding success, there have been several positive indicators for the emergence of an anticancer drug from the family due to the potent antiproliferative activities manifested by several ...
Jerald J, Nair   +2 more
openaire   +2 more sources

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