STABILISATION AND ISOLATION OF EXTRACELLULAR NUCLEIC ACIDS
申请人:Qiagen GmbH
公开号:US20220017944A1
公开(公告)日:2022-01-20
The present invention provides methods, compositions and devices for stabilizing the extracellular nucleic acid population in a cell-containing biological sample using an apoptosis inhibitor, preferably a caspase inhibitor, a hypertonic agent and/or a compound according to formula 1 as defined in the claims.
Synthesis of P1 aspartate-based peptide acyloxymethyl and fluoromethyl ketones as inhibitors of interleukin-1β-converting enzyme
Improved procedures have been developed for the synthesis of P1aspartate-based 2,6-dichlorobenzoyloxymethyl ketone 1 and fluoromethylketone 2, the prodrugs of two potent ICE-inhibitors. 1 was prepared from (R)-trans-4,5-O-isopropylidene-4,5-dihydroxy-2-pentenecarboxylic acid ethyl ester; 2 was obtained via a nitro-aldol condensation as key step from in situ generated fluoroacetaldehyde.