Results 11 to 20 of about 2,638 (179)
The chemistry of Brazilian Lauraceae. LXV. 5, 7, 8, 3', 4', 5' - Hexamethoxyflavone from an Aniba species [PDF]
Acta Amazonica, 1982 Aniba species (Lauraceae) are characterized by the presence of neolignans or of 6-aryl (or 6-styryl-) 2-pyrones. Flavonoids occur either together with pyrones or, in rare cases, as predominant micromolecular type. The branch wood of an Aniba species from
Sergio de H. Cavalcante +3 more
doaj +1 more source
A Three-Step Route to Functionalized Pyrrole-2,5-Dicarboxylic Acids from Galactaric Acid. [PDF]
ChemSusChemGalactaric acid (GalA) has been used as substrate for a library of N‐substituted pyrrole‐2,5‐dicarboxylic acids (PDCAs). Existing routes to N‐substituted PDCAs require many steps or lack product isolation. We present a simple, scalable three‐step synthesis from GalA via a 2‐pyrone salt, giving isolated PDCA derivatives in high yield without ...
Trapasso G +3 more
europepmc +2 more sources
Journal of Fungi, 2023 Fusarium graminearum is a causal organism of Fusarium head blight in cereals and maize. Although a few secondary metabolites produced by F. graminearum are considered disease virulence factors, many molecular products of biosynthetic gene clusters ...
Carmen Hicks +9 more
doaj +1 more source
Marine Drugs, 2022 With the increasingly serious antimicrobial resistance, discovering novel antibiotics has grown impendency. The Antarctic abundant microbial resources, especially fungi, can produce unique bioactive compounds for adapting to the hostile environment.
Ting Shi +6 more
doaj +1 more source
Green Synthesis and Catalysis, 2020 Salicylaldehyde containing biaryls are efficiently synthesized via an unprecedented amine promoted Diels-Alder-retro-Diels-Alder cascade reaction of ynals with 2-pyrones in good yields.
Xixi Song +5 more
doaj +1 more source
Green Synthesis and Catalysis, 2020 An efficient and practical synthetic approach was developed for the tandem synthesis of trisubstituted 2-pyrone derivatives from sulfoxonium ylides and cyclopropenones. This [3+3] annulation reaction was carried out under transition-metal-free conditions.
Maoyao He +7 more
doaj +1 more source
Two new -Methoxy--Pyrones From the Mangrove Sediment-Derived SCSIO NS126
Natural Product Communications, 2021 Two new α -methoxy- γ -pyrone analogs, 2-methoxy-3-methyl-5,6-diethyl- γ -pyrone ( 2 ) and 2-methoxy-3,5-dimethyl-6-propyl- γ -pyrone ( 3 ), together with 2-methoxy-3,5-dimethyl-6-ethyl- γ -pyrone ( 1 ), firstly isolated from natural sources, were ...
Kunlong Li +6 more
doaj +1 more source
Nocapyrones: α- and γ-Pyrones from a Marine-Derived Nocardiopsis sp.
Marine Drugs, 2014 One new α-pyrone (nocapyrone R (1)), and three known γ-pyrones (nocapyrones B, H and L (2–4)) were isolated from the culture extract of a Nocardiopsis strain collected from marine sediment.
Youngju Kim +7 more
doaj +1 more source
Marine Drugs, 2019 Three novel monomeric naphtho-γ-pyrones, peninaphones A−C (compounds 1−3), along with two known bis-naphtho-γ-pyrones (compounds 4 and 5) were isolated from mangrove rhizosphere soil-derived fungus Penicillium sp. HK1-22.
Yao-Yao Zheng +7 more
doaj +1 more source
Antiproliferative Illudalane Sesquiterpenes from the Marine Sediment Ascomycete Aspergillus oryzae
Marine Drugs, 2021 The new asperorlactone (1), along with the known illudalane sesquiterpene echinolactone D (2), two known pyrones, 4-(hydroxymethyl)-5-hydroxy-2H-pyran-2-one (3) and its acetate 4, and 4-hydroxybenzaldehyde (5), were isolated from a culture of Aspergillus
Raha Orfali +12 more
doaj +1 more source