Results 61 to 70 of about 5,225 (230)

New chemistry of diazafulvenium methides: one way to pyrazoles [PDF]

open access: yes, 2006
Diazafulvenium methides generated from the solution pyrolysis of pyrazolo[1,5-c][1,3]thiazole-2,2-dioxides participate in [8[pi]+2[pi]] cycloadditions giving pyrazolo[1,5-a]pyridine derivatives.
Gonsalves, António M. d'A. Rocha   +2 more
core   +1 more source

Multi‐Scale Structural Insights Into Amphiphilic Model PEG–PCL Co‐Networks From LS and SANS

open access: yesMacromolecular Chemistry and Physics, Volume 227, Issue 7, 14 April 2026.
We present a multiscale structural study of amphiphilic PEG–PCL co‐networks combining light scattering in THF and small‐angle neutron scattering in D2O. This dual‐solvent approach reveals how solvent quality, polymer volume fraction, and PEG/PCL interactions govern static and dynamic correlation lengths, network homogeneity, and nanoscale domain ...
Sebastian Seitel   +6 more
wiley   +1 more source

Stereoselective Synthesis and Cytoselective Toxicity of Monoterpene-Fused 2-Imino-1,3-thiazines

open access: yesMolecules, 2014
Starting from pinane-, apopinane- and carane-based 1,3-amino alcohols obtained from monoterpene-based β-amino acids, a library of monoterpene-fused 2-imino-1,3-thiazines as main products and 2-thioxo-1,3-oxazines as side-products were prepared via two ...
Zsolt Szakonyi   +3 more
doaj   +1 more source

Identification of a novel 1,2 oxazine that can induce apoptosis by targeting NF-κB in hepatocellular carcinoma cells

open access: yesBiotechnology Reports, 2020
Constitutive activation of NF-κB is associated with proinflammatory diseases and suppression of the NF-κB signaling pathway has been considered as an effective therapeutic strategy in the treatment of various cancers including hepatocellular carcinoma ...
Chaithanya Somu   +13 more
doaj   +1 more source

Oxetanes: Recent Advances in Synthesis, Reactivity and Medicinal Chemistry [PDF]

open access: yes, 2016
The 4-membered oxetane ring has been increasingly exploited for its behaviors, i.e. influence on physicochemical properties as a stable motif in medicinal chemistry, and propensity to undergo ring opening reactions as a synthetic intermediate.
Bull, JA   +4 more
core   +1 more source

Amphiphilic Polymer Model Networks Synthesized by Different Hetero‐Complementary Coupling Reactions of Tetra‐PEG and Tetra‐PCL Stars

open access: yesMacromolecular Chemistry and Physics, Volume 227, Issue 7, 14 April 2026.
Amphiphilic co‐networks (ACN) synthesized by different hetero‐complementary reactions of hydrophilic tetra‐PEG and hydrophobic tetra‐PCL stars are compared. For the ACNs, equilibrium volume swelling degrees (Qv) are determined. Information about the ACNs micro structure (connectivity distribution) is obtained from proton low‐resolution multiple‐quantum
Stephanie Ihmann   +4 more
wiley   +1 more source

A small oxazine compound as an anti-tumor agent: A novel pyranoside mimetic that binds to VEGF, HB-EGF, and TNF-α [PDF]

open access: yes, 2010
A novel pyranoside mimetic compound, DMBO (2-(2,6-difluorophenyl)-5-(4-methoxyphenyl)-1-oxa-3-azaspiro5.5undecane), was designed and synthesized. The sugar mimicking behavior of DMBO was addressed by its ability to bind several growth factors/cytokines ...
Basappaa, .   +6 more
core   +1 more source

Comparison of Blood Cell Count Results Between MgSO4 and K2EDTA. Stability and Accuracy of Platelet Counting With MgSO4

open access: yesInternational Journal of Laboratory Hematology, Volume 48, Issue 2, Page 336-344, April 2026.
ABSTRACT Introduction We investigated the stability and accuracy of platelets with MgSO4 and compared the results of blood counts between MgSO4 and K2EDTA. Methods Platelet stability as a function of time was assessed on the XN Sysmex analyzer by comparing the percentage deviation to the desirable bias of the EFLM.
Michel Soulard   +4 more
wiley   +1 more source

Cycloaddition reactions of nitrosoalkenes, azoalkenes and nitrile oxides mediated by hydrotalcite [PDF]

open access: yes, 2012
Mg:Al 3:1 hydrotalcite (Ht), used in catalytic quantities, promotes the generation of nitrosoalkenes, azoalkenes and nitrile oxides. These can be intercepted in situ by heterocycles and olefins in [4+2] and [3+2] cycloaddition reactions, producing ...
Lemos, A., Lourenço, J. P.
core  

Computer-Assisted Design of Environmentally Friendly and Light-Stable Fluorescent Dyes for Textile Applications. [PDF]

open access: yes, 2019
Five potentially environmentally friendly and light-stable hemicyanine dyes were designed based on integrated consideration of photo, environmental, and computational chemistry as well as textile applications.
Chen, Guoqiang   +2 more
core   +1 more source

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