65359-87-7Relevant articles and documents
Nucleoside analogues with a 1,3-diene-Fe(CO)3 substructure: Stereoselective synthesis, configurational assignment, and apoptosis-inducing activity
Hirschh?user, Christoph,Velcicky, Juraj,Schlawe, Daniel,Hessler, Erik,Majdalani, André,Neud?rfl, J?rg-Martin,Prokop, Aram,Wieder, Thomas,Schmalz, Hans-Günther
, p. 13017 - 13029 (2013/10/01)
The synthesis and stereochemical assignment of two classes of iron-containing nucleoside analogues, both of which contain a butadiene-Fe(CO)3 substructure, is described. The first type of compounds are Fe(CO)3-complexed 3'-alkenyl-2′,3′-dideoxy- 2′,3′-dehydro nucleosides (2,5-dihydrofuran derivatives), from which the second class of compounds is derived by formal replacement of the ring oxygen atom by a CH2 group (carbocyclic nucleoside analogues). These compounds were prepared in a stereoselective manner through the metal-assisted introduction of the nucleobase. Whilst the furanoid intermediates were prepared from carbohydrates (such as methyl-glucopyranoside), the carbocyclic compounds were obtained by using an intramolecular Pauson-Khand reaction. Stereochemical assignments based on NMR and CD spectroscopy were confirmed by X-ray structural analysis. Biological investigations revealed that several of the complexes exhibited pronounced apoptosis-inducing properties (through an unusual caspase 3-independent but ROS-dependent pathway). Furthermore, some structure-activity relationships were identified, also as a precondition for the design and synthesis of fluorescent and biotin-labeled conjugates. I gotta Fe-ling: Iron-containing nucleoside analogues, which were first synthesized during an exercise in stereoselective π-complex chemistry, exhibited pronounced cytotoxic and apoptosis-inducing activities, even against resistant cancer cell lines. Both hetero- (X=O) and carbocyclic (X=CH2) compounds were studied, and a synthetic route to R′-labeled derivatives was developed as a precondition for future biological experiments. TDS=thexyldimethylsilyl. Copyright
An Approach to Chiral η4-Butadiene-Fe(CO)3 Complexes via Diastereoselective Complexation of Nonracemic 2-Alkoxy-4-vinyl-2,5-dihydrofuran Derivatives
Schmalz, Hans-Guenther,Hessler, Erik,Bats, Jan W.,Duerner, Gerd
, p. 4543 - 4546 (2007/10/02)
Complexation of (+)-L-arabinose-derived 2-benzyloxy-4-vinyl-2,5-dihydrofuran derivatives (8) with Fe2(CO)9 in ether proceeds diastereoselectively providing a (separable) mixture of the corresponding exo- and endo- η4-diene-Fe(CO)3 complexes 9 and 10 in a ratio of about 1 : 3.The relative (and absolute) configuration of the complexation products was determined by a combination of analytical methods (CD, NMR, X-ray).
Efficient High-Yielding Syntheses and NMR Spectroscopic Studies of Some Fluorodeoxy Sugars
Latif, Farzana,Malik, Abdul,Voelter, Wolfgang
, p. 617 - 620 (2007/10/02)
Displacement of the triflyl group by fluoride ion in benzyl 2,3-anhydro-4-O-(trifluoromethylsulfonyl)pyranosides 1-3 leads with stereochemical inversion to the 4-fluoro-4-deoxy sugars 4-6, providing a general method for the introduction of fluorine in the