marizomib has been researched along with 3-hydroxybutanal* in 1 studies
1 other study(ies) available for marizomib and 3-hydroxybutanal
Article | Year |
---|---|
(S)-4-Trimethylsilyl-3-butyn-2-ol as an auxiliary for stereocontrolled synthesis of salinosporamide analogs with modifications at positions C2 and C5.
Analogs of salinosporamide A with variations of the C2 and C5 substituents are prepared in 8-10 steps using as the first and key transformation a diastereoselective Mukaiyama aldol reaction between the chiral 5-tert-butyldimethylsiloxy-3-methyl-1H-pyrrole-2-carboxylic ester depicted and various aldehyde substrates, promoted by tert-butyldimethylsilyl triflate. In this transformation, the 4-trimethylsilyl-3-butyn-2-ol ester functions to direct the formation of predominantly one of four possible diastereomeric aldol products. Introduction of the C2 appendage by a later-stage, stereocontrolled alkylation reaction permits the construction of analogs variant at this position. Results from in vitro and cell-based assays of proteasomal inhibition are reported. Mass spectrometric studies provide mechanistic details of proteasomal modification by salinosporamide A and analogs. Topics: Aldehydes; Alkylation; Butanols; Crystallography, X-Ray; Esters; Humans; Lactones; Molecular Conformation; Proteasome Endopeptidase Complex; Proteasome Inhibitors; Pyrroles; Stereoisomerism; Trimethylsilyl Compounds | 2013 |