Unnatural nucleosides and nucleotides. III. Preparation of 2-14C and 4-14C labelled 5-alkyluracils and 5-alkyl-2′-deoxyuridines
作者:A. Szabolcs、G. Kruppa、J. Sági、L. Ötvös
DOI:10.1002/jlcr.2580140509
日期:——
2-14C Labelled 5-alkyluracils were prepared by condensation of the diethylacetals of α-formyl-carbonic acid esters with 14C-thiourea. Compounds labelled at 4-C were synthesized by condensation of the labelled carboxylic acid derivatives with thiourea. β-Anomers of 5-alkyl-2′-deoxyuridines were obtained in a fairly good radiochemical yield. Alkyl substituents ranged from methyl to tetradecyl, isopropyl and tertbutyl.
Glycosylation of 3-alkyl N4-(3-hydroxypropyl) 2-piperazinones by protected 1-O-acetyl ribofuranoses produces nucleosideanalogs in which the base is separated from the sugar by a hydrocarbon spacer arm. The preliminary in vitro test results against retroviruses seem promising for compounds bearing a long alkyl chain.
toxicological effect in the form of peroxisomal proliferation was performed in order to achieve the target compound OT4003. OT4003 ((S)-(+)-E-2-(3-(2-(7- chloroquinolin-2-yl)ethenyl)phenylaminomethyl)-phenoxyl++ +-hexanoic acid) was found to be a potent and selective inhibitor of [3H]LTD4 specific binding to guinea pig lung membranes (IC50 2.4 +/- 1.0 nM), and also a potent, orally active, antagonist of LTD4 induced
LIPOPHILIC MACROCYCLIC LIGANDS, COMPLEXES THEREOF, AND USES OF SAME
申请人:GUERBET
公开号:US20200231554A1
公开(公告)日:2020-07-23
The present invention relates to novel lipophilic macrocyclic ligands, the complexes thereof, in particular radioactive complexes, and the uses of same in medical imaging and/or in therapy, in particular in interventional radiology.
Process for the manufacture of new carboxylic acids
申请人:Ciba-Geigy AG
公开号:US04115416A1
公开(公告)日:1978-09-19
.alpha.-Phenoxyacetic acids, in which the .alpha.-position is substituted by an alkyl residue with 5 to 12 carbon atoms and the phenyl residue is substituted by a cycloaliphatic hydrocarbon residue which is unsaturated in the 1-position and is only singly unsaturated, and their esters and amides are useful as hypolipidaemic agents.