Results 61 to 70 of about 2,744 (177)
Peer review of the pesticide risk assessment of the active substance Trichoderma asperellum T34
EFSA Journal, Volume 24, Issue 7, July 2026.Abstract The conclusions of the European Food Safety Authority (EFSA) following the peer review of the initial risk assessments carried out by the competent authorities of the rapporteur Member State Sweden and co‐rapporteur Member State Italy for the pesticide active substance Trichoderma asperellum T34 are reported. The context of the peer review was
European Food Safety Authority (EFSA) +48 more
wiley +1 more source
Beilstein Journal of Organic Chemistry, 2014 Two mild and efficient strategies have been developed for the O-functionalisation of 4-hydroxy-6-alkyl-2-pyrones, by using them as nucleophilic partners in oxa-Michael additions and the Mitsunobu reaction.
Michael J. Burns +3 more
doaj +1 more source
European Journal of Organic Chemistry, Volume 29, Issue 24, 23 June 2026.Effective synthesis of 3‐substituted isoindolinones is possible through novel cascade reactions of alkyl arylacetates with 2‐cyanobenzaldehydes under mild, basic conditions. Herein we report the use of alkyl arylacetates as pro‐nucleophiles in cascade reactions with 2‐cyanobenzaldehydes leading to the formation of novel 3‐substituted isoindolinones, a ...
Antonia Di Mola +4 more
wiley +1 more source
Chemistry of Pyrones, Part 3: New Podands of 4H-Pyran-4-ones
Molecules, 2000 New derivatives of 3,5-disubstituted 4H-Pyran-4-one podands (9-15) were prepared by transesterification reaction of dimethyl or diethyl 2,6-dimethyl-4H-pyran-4-one-3,5-dicarboxylate with some glycol, glycol ethers or by nucleophilic substitution of some ...
Aziz Shahrisa, Alireza Banaei
doaj +1 more source
Marine Drugs, 2013 Two novel chlorinated pyrones, halomadurones A and B, and two novel brominated analogues, halomadurones C and D, were isolated from a marine Actinomadura sp. cultivated from the ascidian Ecteinascidia turbinata.
Thomas P. Wyche +6 more
doaj +1 more source
Identification and isolation of insecticidal oxazoles from Pseudomonas spp.
Beilstein Journal of Organic Chemistry, 2012 Two new and five known oxazoles were identified from two different Pseudomonas strains in addition to the known pyrones pseudopyronine A and B. Labeling experiments confirmed their structures and gave initial evidence for a novel biosynthesis pathway of ...
Florian Grundmann +7 more
doaj +1 more source
Pyran Rings Containing Polyketides from Penicillium raistrickii
Marine Drugs, 2016 Five new pyran rings containing polyketides, penicipyrans A–E (1–5), together with the known pestapyrone A (6), were isolated from the saline soil-derived Penicillium raistrickii. Their structures were determined by interpretation of NMR and HRESIMS data.
Li-Ying Ma +6 more
doaj +1 more source
A Survey of the Chemical Compounds of spp. (Piperaceae) and Their Biological Activities
Natural Product Communications, 2016 The genus Piper is one of the largest genera in the Piperaceae, with most species widely distributed globally, covering all continents. To date, many Piper species have been scientifically investigated for their chemical diversities and interesting broad
Cai-Peng Xiang +6 more
doaj +1 more source