Results 101 to 110 of about 2,460 (195)

Photochemical Approaches to Complex Chemotypes: Applications in Natural Product Synthesis. [PDF]

open access: yes, 2016
The use of photochemical transformations is a powerful strategy that allows for the formation of a high degree of molecular complexity from relatively simple building blocks in a single step. A central feature of all light-promoted transformations is the
Kärkäs, Markus D.   +2 more
core   +2 more sources

Methylisoindigo and Its Bromo-Derivatives Are Selective Tyrosine Kinase Inhibitors, Repressing Cellular Stat3 Activity, and Target CD133+ Cancer Stem Cells in PDAC

open access: yesMolecules, 2017
Indirubin is an active component of the herbal ingredient ‘Danggui Longhui wan’, which was used for the treatment of inflammation and chronic myeloid leukemia in China.
Jana Tegethoff   +5 more
doaj   +1 more source

Calmodulin in Complex with Proteins and Small Molecule Ligands: Operating with the Element of Surprise. Implications for Structure-Based Drug Design [PDF]

open access: yes, 2009
Calmodulin plays a role in several life processes, its flexibility allows binding of a number of different ligands from small molecules to amphiphilic peptide helices and proteins. Through the diversity of its functions, it is quite difficult to find new
Keserű, György Miklós   +2 more
core  

A Simplified Procedure for Indole Alkaloid Extraction from Catharanthus roseus Combined with a Semi-synthetic Production Process for Vinblastine

open access: yesMolecules, 2007
Dried leaves of Catharanthus roseus were extracted with aqueous acidic 0.1 M solution of HCl. Alkaloid-embonate complexes were obtained as precipitates by treating the extract with an alkaline (NaOH) solution of embonic acid (4,4-methylene-bis-3 ...
Marja-Liisa Riekkola   +4 more
doaj   +1 more source

Stereoselective Synthesis of 2-(2-Aminoalkyl)- and 1,3-Disubstituted Tetrahydro-1H-pyrido[4,3-b]- Benzofuran and Indole Derivatives [PDF]

open access: yes, 2016
The addition of an allenyl indium intermediate to chiral N-tert-butanesulfinyl imines 7 proceeds with high levels of diastereocontrol. The resulting homopropargylic amine derivatives 10 were transformed into 2-(2-aminoalkyl)benzofuran and indole ...
Foubelo, Francisco   +2 more
core   +3 more sources

Bisindoles : synthesis and reactions

open access: yes, 1999
In this thesis, synthesis of various bisindoles have beendeveloped.2,3-Bis-(3-indolyl) succinic acid derivatives wereobtained via iodine promoted coupling of the trianion ofindole-3-acetic acid (IAA) or from the dianion of themethylester of IAA. These compounds were converted to2,3-bis(3-indolyl) maleimides (arcyriarubin analogues) by DDQoxidation ...
openaire   +2 more sources

Development and Praxis of Ph Drug Delivery System Contra Zika

open access: yes, 2023
As the effects of global warming continue to spread throughout the world, another critical issue is slowly gaining attention in many urban tropical countries.
Rodriguez, Julissa
core   +1 more source

Synthesis and Cheminformatics-Directed Antibacterial Evaluation of Echinosulfonic Acid-Inspired Bis-Indole Alkaloids

open access: yesMolecules
Synthetic efforts toward complex natural product (NP) scaffolds are useful ones, particularly those aimed at expanding their bioactive chemical space.
Darren C. Holland   +3 more
doaj   +1 more source

Bis-Indole Derivatives as Dual Nuclear Receptor 4A1 (NR4A1) and NR4A2 Ligands

open access: yesBiomolecules
Bis-indole derived compounds such as 1,1-bis(3′-indolyl)-1-(3,5-disubstitutedphenyl) methane (DIM-3,5) and the corresponding 4-hydroxyl analogs (DIM8-3,5) are NR4A1 ligands that act as inverse NR4A1 agonists and are potent inhibitors of tumor growth. The
Srijana Upadhyay   +10 more
doaj   +1 more source

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