Search Results - "Orgueira, Hernan A."

Synthesis of Chiral Polyhydroxy Polyamides Having Chains of Defined Regio and Stereoregularity by Orgueira, Hernan A, Erra-Balsells, Rosa, Nonami, Hiroshi, Varela, Oscar

“…1,6-Diaminohexane and a 2-(S)-hydroxypentanedioic acid 5,2-lactone derivative (3) were polycondensed to afford an aregic polyamide 4. A chiral monomer (5)…”
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Modular Synthesis of Heparin Oligosaccharides by Orgueira, Hernán A., Bartolozzi, Alessandra, Schell, Peter, Litjens, Remy E. J. N., Palmacci, Emma R., Seeberger, Peter H.

“…A general, modular strategy for the first completely stereoselective synthesis of defined heparin oligosaccharides is described. Six monosaccharide building…”
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Conformational Locking of the Glycosyl Acceptor for Stereocontrol in the Key Step in the Synthesis of Heparin by Orgueira, Hernan A., Bartolozzi, Alessandra, Schell, Peter, Seeberger, Peter H.

“…Complete control over the stereoselectivity of key coupling reactions in the synthesis of heparin can be exerted by conformationally locking the uronic acid…”
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Synthesis and transformations of d-glucuronic and l-iduronic acid glycals by Schell, Peter, Orgueira, Hernan A, Roehrig, Susanne, Seeberger, Peter H

“…d-Glucuronic acid glycals can be efficiently synthesized from diacetone glucose or tri- O-acetyl glycal and can be transformed into d-glucuronic acid donors…”
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Conformational Locking of the Glycosyl Acceptor for Stereocontrol in the Key Step in the Synthesis of Heparin Financial support from the National Institutes of Health (HL-64799 and HL-62598), The Research Corporation (Research Innovation Award to P.H.S.), CaP CURE (Research Awards to P.H.S.), FOMEC (Postdoctoral Fellowship for H.A.O.), CNRI (Italian National Research Center, Postdoctoral Fellowship for A.B.), and the DAAD (German Academic Exchange Service, Postdoctoral Fellowship for P.S.) is gr by Orgueira, Hernan A., Bartolozzi, Alessandra, Schell, Peter, Seeberger, Peter H.

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Regioselective synthesis of [1,2,3]-triazoles catalyzed by Cu(I) generated in situ from Cu(0) nanosize activated powder and amine hydrochloride salts by Orgueira, Hernán A., Fokas, Demosthenes, Isome, Yuko, Chan, Philip C.-M., Baldino, Carmen M.

“…[Display omitted] A straightforward and efficient method for the regioselective synthesis of functionalized 1,4-disubstituted [1,2,3]-triazoles, from terminal…”
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Conformational Locking of the Glycosyl Acceptor for Stereocontrol in the Key Step in the Synthesis of Heparin Financial support from the National Institutes of Health (HL-64799 and HL-62598), The Research Corporation (Research Innovation Award to P.H.S.), CaP CURE (Research Awards to P.H.S.), FOMEC (Postdoctoral Fellowship for H.A.O.), CNRI (Italian National Research Center, Postdoctoral Fellowship for A.B.), and the DAAD (German Academic Exchange Service, Postdoctoral Fellowship for P.S.) is gr by Orgueira, Hernan A., Bartolozzi, Alessandra, Schell, Peter, Seeberger, Peter H.

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Synthesis and characterization of stereoregular AABB-type polymannaramides by Orgueira, Hernán A., Varela, Oscar

“…The condensation of D‐mannaro‐1,4:6,3‐dilactone (2) with even‐numbered alkylenediamines (C2, C6–C12) in a methanol solution and in the presence of…”
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L-Glutamic acid and L-alanine derivatives as building blocks for the synthesis of a chiral monomer precursor of AABB-type polyamide by Gómez, Romina V., Orgueira, Hernán A., Varela, Oscar

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Conformational Locking of the Glycosyl Acceptor for Stereocontrol in the Key Step in the Synthesis of Heparin by Orgueira, Hernan A., Bartolozzi, Alessandra, Schell, Peter, Seeberger, Peter H.

“…Vollständige Kontrolle über die Stereoselektivität wichtiger Kupplungsreaktionen bei der Synthese von Heparin lässt sich durch konformatives Fixieren des…”
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Cover Picture: Chem. Eur. J. 1/2003 by Orgueira, Hernán A., Bartolozzi, Alessandra, Schell, Peter, Litjens, Remy E. J. N., Palmacci, Emma R., Seeberger, Peter H.

“…The cover picture shows schematically a general, modular strategy for the first completely stereoselective synthesis of defined heparin oligosaccharides…”
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Synthesis and characterization of chiral polyamides derived from glycine and (S)-5-amino-4-methoxypentanoic acid by Orgueira, Hernan A., Bueno, Manuel, Funes, Jose Luis, Galbis, Juan A., Varela, Oscar

“…Stereoregular, enantiomerically pure, chiral polyamides of the –AB– type, containing a natural (glycine) and a synthetic [(S)‐5‐amino‐4‐methoxypentanoic acid…”
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Stereocontrolled synthesis of stereoregular, chiral analogs of nylon 5, 5 and nylon 5,6 by Orgueira, Hernán A., Varela, Oscar

“…L-glutamic acid ( 1) was employed as a chiral template in the preparation of the pentachlorophenyl ester of (4 S)-carboxy-1,4-butirolactone ( 3), a key…”
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Synthesis of carbohydrate-based monomers that are precursors for the preparation of stereoregular polyamides by Zamora, Francisca, Bueno, Manuel, Molina, Inmaculada, Orgueira, Hernán A., Varela, Oscar, Galbis, Juan A.

“…The syntheses of some derivatives of 5-amino-5-deoxy-L-arabinonic acid, 5-amino-5-deoxy-D-xylonic acid and ( S)-5-amino-4-hydroxypentanoic acid have been…”
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Synthesis and characterization of optically active polyamides derived from carbohydrate-based monomers by Bueno, Manuel, Zamora, Francisca, Molina, Inmaculada, Orgueira, Hernán A., Varela, Oscar, Galbis, Juan A.

“…The synthesis of three new stereoregular AB‐type polyamides based on D‐ribono‐1,4‐lactone, L‐arabinose, and D‐xylose has been carried out by the active ester…”
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