Synthesis of Steroid O-(ω-Hydroxyalkyl)oximes by Reduction of Corresponding O-(ω-Carboxyalkyl)oxime Derivatives
作者:Tereza Slavíková、Vladimír Pouzar、Ivan Černý
DOI:10.1135/cccc19980557
日期:——
Steroid O-(ω-hydroxyalkyl)oximes with varying alkyl chain length were prepared from the corresponding carboxylic acids using the reduction of mixed anhydrides with sodium borohydride. An unexpected reaction course was observed with O-(2-carboxyethyl)oximes of 3-oxo-4-ene steroids, where a 4,5-dihydroisoxazol-3(2H)-one derivative was formed as a side product.
[EN] SPHINGOSINE 1 PHOSPHATE RECEPTOR MODULATORS<br/>[FR] MODULATEURS DU RÉCEPTEUR DE LA SPHINGOSINE-1-PHOSPHATE
申请人:RECEPTOS LLC
公开号:WO2021195396A1
公开(公告)日:2021-09-30
Compounds are provided having the structure of Formula (I): (Formula (I)) or a pharmaceutically acceptable salt, homolog, hydrate or solvate thereof, wherein R is as defined herein. Such compounds serve as modulators of the sphingosine-1-phosphate receptor, and have utility for treatment of a malcondition for which activation of this receptor is medically indicated.
The synthesis of O-substituted 3-oximes of 6α -methyl-16α,17α-cyclohexanopregn-4-ene-3,20-diones tritium-labeled in the 1,2-position
作者:V. P. Shevchenko、I. Yu. Nagaev、I. S. Levina、L. E. Kulikova、N. F. Myasoedov、A. V. Kamernitzky
DOI:10.1134/s1068162010020172
日期:2010.3
Abstract1,2-Tritium-labeled 3-(O-carboxypropyl)- and 3-(O-carbomethoxypropyl)-oximes of 6α-methyl-16α,17α-cyclohexanopregn-4-ene-3,20-diones were obtained by the homogeneous catalytic hydrogenation of 1,2-dehydroprecursors with gaseous tritium and the subsequent separation of the resulting mixtures by HPLC. The specific radioactivities of 50–55 Ci/mmol were prepared using tris-(triphenylphosphine)-rhodium
α-Aminoacyl derivatives of aminobenzoic acid and of amino-oxy-acids by reaction of their hydrochlorides with amino-acid N-carboxyanhydrides
作者:Y. Knobler、S. Bittner、D. Virov、Max Frankel
DOI:10.1039/j39690001821
日期:——
The reaction of amino-acidN-carboxyanhydrides with hydrochlorides of aminobenzoicacids and of amino-oxy-acids gave amino-acid amides in a one-step synthesis. The coupling of L-alanine N-carboxyanhydride with anthranilic and with p-aminobenzoic acidhydrochloride gave peptide-like compounds of high optical activity, indicating the presence of little or no racemate. Glycyl and DL-phenylalanyl amides
The invention relates to compounds of the formula (I)
in which
A
1
, A
2
, R
1
, R
2
, R
3
, R
4
, R
5
and X are as defined in the description,
to processes and intermediates for their preparation, and to their use for controlling pests.