Results 171 to 180 of about 16,147 (226)

Synthesis of Isoxazole- and Oxazole-4-carboxylic Acids Derivatives by Controlled Isoxazole-Azirine-Isoxazole/Oxazole Isomerization

open access: yesThe Journal of Organic Chemistry, 2019
The first synthesis of isoxazole-4-carboxylic acid derivatives by domino isoxazole-isoxazole isomerization is reported. Fe(II)-catalyzed isomerization of 4-acyl-5-methoxy-/5-aminoisoxazoles (dioxane, 105 °C) leads to the formation of isoxazole-4-carboxylic esters and amides in good yields. 4-Formyl-5-methoxyisoxazoles give methyl oxazole-4-carboxylates
Anna V. Serebryannikova   +3 more
core   +4 more sources

Isoxazole Hydrate

open access: yesCanadian Journal of Chemistry, 1974
X-Ray, n.m.r., and dielectric studies show that the hydrate of isoxazole is a typical type II clathrate hydrate in structure, in reorientation rates of host and guest molecules, and in composition.
Gough, S.R.   +3 more
openaire   +3 more sources

Isoxazole anthelmintics

Journal of Medicinal Chemistry, 1977
A series of 3-halo-5-phenyl- and 3-phenyl-5-haloisoxazoles has demonstrated anthelmintic activity at doses ranging from 16 to 500 mg/kg orally against the rat roundworm, Nippostrongylus braziliensis. In the 5-phenyl series a halogen at the 3 position of the isoxazole ring was required for activity.
J B, Carr, H G, Durham, D K, Hass
openaire   +2 more sources

NH2OH–Mediated Lignin Conversion to Isoxazole and Nitrile

open access: yesACS Sustainable Chemistry and Engineering, 2018
Conversion of lignin to aromatic compounds via C-C/C-O bond cleavage has been an attractive but challenging subject in recent years. We herein report the first protocol that converts lignin models and preoxidized lignin to isoxazole and aromatic nitrile.
Hongji Li, Huifang Liu, Nengchao Luo
exaly   +2 more sources

Isoxazoles with antipicornavirus activity

Journal of Medicinal Chemistry, 1985
The synthesis and evaluation of a series of 3,5-disubstituted isoxazoles as antipicornavirus agents have led to the discovery of several compounds effective in vitro against rhinovirus type 2 and poliovirus type 2. Compound 32 was found more effective than 4',6-dichloroflavan against both viruses and was evaluated orally in mice infected ...
G D, Diana   +5 more
openaire   +2 more sources

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