18668-00-3Relevant articles and documents
Vancomycin binding to low-affinity ligands: Delineating a minimum set of interactions necessary for high-affinity binding
Loll, Patrick J.,Kaplan, Jeffrey,Selinsky, Barry S.,Axelsen, Paul H.
, p. 4714 - 4719 (1999)
Bacterial resistance to vancomycin has been attributed to the loss of an intermolecular hydrogen bond between vancomycin and its peptidoglycan target when cell wall biosynthesis proceeds via depsipeptide intermediates rather than the usual polypeptide int
Stereoisomeric lactoyl β methylcholine iodides. Interaction with cholinesterase and acetylcholinesterase
Chan,Robinson
, p. 1057 - 1060 (1974)
The preparation and absolute configuration of the stereoisomeric forms of lactoyl β methylcholine iodide with the 2 racemic forms of the molecule are reported. None of the stereoisomers were substrates for the enzyme acetylcholinesterase, whereas two stereoisomers (L lactoyl β methylcholine and D lactoyl L β methylcholine iodide) were poor substrates for cholinesterase. Results are analyzed in the light of previous studies of the chiral requirements of these 2 enzymes and an attempt is made to define the rate limiting or prohibited step in the enzyme catalyzed reaction with these compounds.
A simple procedure for the synthesis of enantiopure α-acetoxy ketones
Babudri, Francesco,Fiandanese, Vito,Marchese, Giuseppe,Punzi, Angela
, p. 2431 - 2440 (1999)
Cross-coupling reactions of α-acetoxy carboxylic acid chlorides with organocopper reagents, derived from Grignard reagents, cuprous bromide and lithium bromide, provide a simple and straightforward method for the synthesis of enantiopure α-acetoxy ketones.
Modifying oligoalanine conformation by replacement of amide to ester linkage
Hongen, Takahiro,Taniguchi, Tohru,Monde, Kenji
supporting information, p. 396 - 401 (2018/02/13)
Oligo(lactic acid) is an ester-analogue of short oligoalanine sequence and adopts a rigid left-handed helical structure. In this study, oligo(lactic acid) was incorporated into oligoalanine sequences and their conformations were studied by vibrational circular dichroism and electronic circular dichroism spectroscopy. The results suggested that oligo(lactic acid) moiety in these sequences maintains a left-handed helix and increases the conformational propensity of the oligoalanine moiety to form a left-handed polyproline type II-like helix. The importance of the chirality of oligo(lactic acid) moiety for the oligoalanine conformation was also studied. The results obtained in this study should be useful in developing ester-containing oligopeptides that function better than normal peptides.
Compounds And Compositions for the Treatment of Ocular Disorders
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Paragraph 0503, (2017/04/11)
The disclosure describes prodrugs and derivatives of prostaglandins, carbonic anhydrase inhibitors, kinase inhibitors, beta-adrenergic receptor antagonists and other drugs, as well as controlled delivery formulations containing such prodrugs and derivatives, for the treatment of ocular disorders.