Results 71 to 80 of about 6,480 (239)
Angewandte Chemie, EarlyView.Catalytic, intramolecular N‐heterocycle arylation by nucleophilic aromatic substitution (SNAr) is now available for synthesis of highly strained macrocycles and medium‐sized heterobiaryl atropisomeric rings, including atropopeptides. Key to the approach is the ability to generate a strong base catalytically, taking advantage of base‐embedding ...
Alireza Abbasi Kejani +7 more
wiley +2 more sources
Catalisadores heterogêneos para a produção de monoésteres graxos (biodiesel)
Química Nova, 2011 The recent increase in the world biodiesel demand, along with the need to reduce costs while improving the environmental sustainability of the entire biodiesel production chain, have led to the search for heterogeneous catalysts that would be efficient ...
Claudiney Soares Cordeiro +3 more
doaj +1 more source
Advanced Science, EarlyView.During pancreatitis, IL‐1α is released from necrotic acinar cells. In response to IL‐1α, pancreatic fibroblasts release chemokines and cytokines that regulate the recruitment of immune cells to the damaged organ. Furthermore, IL‐1α primes fibroblasts, resulting in increased tissue fibrosis during chronic pancreatitis.
Hala Mazloum +13 more
wiley +1 more source
, 2016 New guanidinylation reagents are reported. These reagents consist of N,N‘,N‘‘-tri-Boc-guanidine (1) and N,N‘,N‘‘-tri-Cbz-guanidine (2), which allow for the facile conversion of alcohols to substituted guanidines.
Konrad Feichtinger (2276335) +4 more
core +1 more source
Detection and substitution-pattern determination of guanidines [PDF]
, 2022 The guanidine function can be detected and its substitution pattern determined taking into account the1H-NMR signals of the N−H and N−C−H groups. Satisfactory results were obtained with mono-to penta-substituted guanidines (as picrate salts).Facultad de ...
González, María Eugenia +2 more
core
Advanced Science, EarlyView.A pathology‐informed engineering strategy rescues reconstituted HDL from inflammatory dysfunction in sepsis. By integrating a ceria nanozyme‐celastrol coordination complex, the platform preserves HDL structure and endotoxin handling, sustains hierarchical intracellular delivery, and enhances immunoregulation across pathological models, translating ...
Han Zhou +12 more
wiley +1 more source
Química Nova, 2007 We report the synthesis of amino(2-hydroxy-2-(4-methoxyphenyl)ethylamino)methaniminium (14) as a direct precursor of a tubastrine derivative (3-dehydroxy-4-methoxytubastrine). The synthetic steps involved functional group interconversions starting from 1-
Kelly de Oliveira Santos +2 more
doaj +1 more source
Cannabinoid CB1 Receptor in Nociceptors Mediates Postoperative Analgesia via ASIC3 Inhibition
Advanced Science, EarlyView.CB1R and ASIC3 are co‐expressed in CGRP+ nociceptors of mouse DRG. Plantar incision triggers an upregulation of ASIC3 and activation of ASIC3+ neurons, driving mechanical allodynia. CB1R activation suppresses ASIC3 function and downstream ERK1/2 phosphorylation, thereby braking nociceptive signaling and accelerating pain resolution.
Kangtai Xu +13 more
wiley +1 more source
Halocyclization of Unsaturated Guanidines Mediated by Koser’s Reagent and Lithium Halides
, 2015 International audienceThe synthesis of halogenated cyclic guanidines through iodine(III)-mediated umpolung of halide salts is described. Cyclic guanidines of various sizes can be obtained with generally excellent regioselectivities through either a ...
Kevin Cariou +9 more
core +2 more sources
Transesterification of vegetable oils: a review
Journal of the Brazilian Chemical Society, 1998 The transesterification of vegetable oils with methanol as well as the main uses of the fatty acid methyl esters are reviewed. The general aspects of this process and the applicability of different types of catalysts (acids, alkaline metal hydroxides ...
Schuchardt Ulf +2 more
doaj