Results 91 to 100 of about 22,717 (244)
Journal of the Science of Food and Agriculture, Volume 106, Issue 14, Page 8679-8689, November 2026.Abstract BACKGROUND Climate change‐driven warming is increasing wine ethanol, promoting an atypical convergence between pH and titratable acidity (TA), and favouring the accumulation of specific wine volatiles: γ‐nonalactone (γ‐C9) and massoia lactone (MLac).
Roberto Salvatore Di Fede +3 more
wiley +1 more source
, 2016 A mixture of cyclopropylideneacetic acids (or esters) and CuBr2 (or CuI/I2) in aqueous acetonitrile afforded 4-substituted 2(5H)-furanones or 3,4-substituted 5,6-dihydro-2H-pyran-2-ones in moderate to good yields.
Xian Huang (820390) +1 more
core +1 more source
2-Amino-5-oxo-4-(thiophen-2-yl)-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile
IUCrDataThe crystal structure of the title compound, C14H12N2O2S, reveals two symmetrically independent molecules within the asymmetric unit. Each molecule contains a chromenone core attached to a 2-thiophene ring, cyano, and amino groups.
Carren Nyapola +3 more
doaj +1 more source
5-Amino-7-(3-chlorophenyl)-3,7-dihydro-2H-thieno[3,2-b]pyran-6-carbonitrile 1,1-dioxide
Acta Crystallographica Section E, 2010 The title compound, C14H11ClN2O3S, with fused thiophene and pyran rings, was synthesized via the condensation of dihydrothiophen-3(2H)-one 1,1-dioxide and 2-(3-chlorobenzylidene)malononitrile catalysed by triethylamine in ethanol.
Shi-De Shen +4 more
doaj +1 more source
Plasmepsins as Antimalarial Drug Targets—Then, Now, and the Future
Medicinal Research Reviews, Volume 46, Issue 6, Page 1574-1602, November 2026.ABSTRACT Malaria is a devastating disease caused by Plasmodium parasites. Plasmodium parasites express ten cathepsin D‐like aspartyl proteases, called plasmepsins (PMs). These PMs have diverse roles fulfill diverse functions throughout the parasite's lifecycle, though several exhibit functional redundancies. Among them, PMV, PMIV, and PMX are essential
Brad E. Sleebs
wiley +1 more source
ChemSusChem, Volume 19, Issue 19, 14 October 2026.Esculetin: an efficient photoacid catalyzing acetalization/ketalization reactions. The development of photochemical protocols for the production of fine chemicals and industrially interesting products, employing sustainable catalysts under mild conditions, is of high interest.
Maria A. Theodoropoulou +6 more
wiley +1 more source
, 2019 In order to develop a novel herbicide containing the β-triketone motif, a series of 4-hydroxyl-3-(2-phenoxyacetyl)-pyran-2-one derivatives were designed and synthesized.
Kang Lei (2823794) +8 more
core +1 more source
9-(4-Formylphenyl)-3,3,6,6-tetramethyl-3,4,5,6,7,9-hexahydro-1H-xanthene-1,8(2H)-dione
IUCrData, 2018 In the title compound, C24H26O4, the central 4H-pyran ring adopts a flattened boat conformation, with the mean and maximum deviations of the ring being 0.0582 (6) and 0.1012 (3) Å, respectively.
R. Kalaivanan +2 more
doaj +1 more source
Synthesis of Naphthoquinones by Pd‐Catalyzed Heck–Matsuda Arylation of Lapachol
European Journal of Organic Chemistry, Volume 29, Issue 38, 13 October 2026.Direct Heck–Matsuda arylation of lapachol enables the efficient synthesis of diverse naphthoquinones under homogeneous and heterogeneous palladium catalysis. The methodology features broad substrate scope, gram‐scale applicability, and provides a practical platform for quinone diversification.
Breno U. de Abreu +13 more
wiley +1 more source
, 2016 Optically active 2-alkoxy-2H-pyran-3(6H)-ones (4a−d) were synthesized in one step by the tin(IV) chloride-promoted glycosylation and rearrangement of the 2-acetoxy-3,4-di-O-acetyl-d-xylal (3) prepared from d-xylose (1).
Christian A. Iriarte Capaccio (3029214) +1 more
core +1 more source