Results 91 to 100 of about 30,006 (268)
Marine DrugsIndole is a versatile pharmacophore widely distributed in bioactive natural products. This privileged scaffold has been found in a variety of molecules isolated from marine organisms such as algae and sponges.
Sergio Fernández +3 more
doaj +1 more source
Crystal structure of akuammicine, an indole alkaloid from Catharanthus roseus
Acta Crystallographica Section E: Crystallographic Communications, 2017 The title compound, C20H22N2O2, an alkaloid isolated from the Madagascar periwinkle, crystallizes in P1 with two independent but closely similar molecules in the unit cell. The molecules are linked into pairs by two N—H...O=C hydrogen bonds. The absolute
Mahdi Yahyazadeh +4 more
doaj +1 more source
Countercurrent chromatography in analytical chemistry (IUPAC technical report) [PDF]
, 2009 © 2009 IUPACCountercurrent chromatography (CCC) is a generic term covering all forms of liquid-liquid chromatography that use a support-free liquid stationary phase held in place by a simple centrifugal or complex centrifugal force field. Biphasic liquid
Abbey +112 more
core +2 more sources
Plant Biotechnology Journal, EarlyView.ABSTRACT Iridoids constitute a prominent class of plant‐specialised metabolites, with carbocyclic iridoids (e.g., geniposide) and secoiridoids (e.g., loganin) diverging early in their biosynthetic pathways. This divergence is marked by substrate‐specific carboxyl methyltransferases—GjGAMT and CrLAMT—that catalyse the decisive methylation step in ...
Li Li +7 more
wiley +1 more source
Plant Biotechnology Journal, EarlyView.ABSTRACT Cold stress threatens wheat productivity, particularly in regions with extreme climatic conditions. To elucidate the molecular mechanisms underlying wheat's response to cold stress, we performed a multiomics analysis integrating lipidomics, transcriptomics, proteomics and metabolomics.
Sofora Jan +15 more
wiley +1 more source
Picranitine, a new indole alkaloid from Picralima nitida (Apocynaceae)
Bulletin of the Chemical Society of Ethiopia, 2002 A new indole alkaloid, picranitine, has been isolated from the seeds of Picralima nitida, along with five known indole alkaloids picratidine, akuammine, pseudoakuammine, akuammicine and akuammidine previously identified from the same source.
Pierre Tane, Mathieu Tene, Olov Sterner
doaj
Preparation of indole alkaloids via 1,4-dihydropyridine stage or cyano-masked iminium intermediates [PDF]
, 2004 Methods to synthesise substituted pyridine derivatives utilising 1,4-dihydropyridines were studied. Addition of nucleophiles to N-alkyl pyridinium salts and application of the products to alkaloid synthesis were investigated.
Putkonen, Tiina
core
UVA photoactivation of harmol enhances its antifungal activity against the phytopathogens Penicillium digitatum and Botrytis cinerea [PDF]
, 2017 Phytopathogenic fungi responsible for post-harvest diseases on fruit and vegetables cause important economic losses. We have previously reported that harmol (1-methyl-9H-pyrido[3,4-b]indol-7-ol) is active against the causal agents of green and gray molds
Cabrerizo, Franco Martín +5 more
core +1 more source
Plant Biotechnology Journal, EarlyView.ABSTRACT Mentha spicata L. (spearmint) is a high‐value aromatic and medicinal species, whose productivity is strongly affected by water deficit. Nevertheless, the molecular mechanisms underlying drought acclimation in this mint remain largely unexplored. Thus, here, we investigated the microRNA‐mediated regulatory processes triggered in M.
Alessia D'Agostino +7 more
wiley +1 more source
Palladium-Catalyzed Cascade Approach to 12-(Aryl)indolo[1,2- c ]quinÂazolin-6(5 H )-ones [PDF]
, 2018 A straightforward one-pot approach to the synthesis of challenging 12-arylindolo[1,2-c]quinazolin-6(5H)-ones is described. Starting from readily available o-(o-aminophenylethynyl)trifluoroacetanilides, palladium-catalyzed aminoarylation of the triple ...
Arcadi, Antonio +6 more
core +1 more source