Synthesis and properties of novel organozinc enolates of N,N-disubstituted glycine esters. Molecular structure of [cyclic] [EtZnOC(OMe):C(H)N(tert-Bu)Me]4 von Van der Steen, Fred H, Boersma, Jaap, Spek, Anthony L, Van Koten, Gerard

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Synthesis and molecular structures of novel .alpha.-amino organoaluminum ester enolates. Key intermediates in the selective formation of trans-3-amino-2-azetidinones von Van der Steen, Fred H, Van Mier, Guido P. M, Spek, Anthony L, Kroon, Jan, Van Koten, Gerard

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Enantioselective synthesis of 3-amino-2-azetidinones via the ester enolate - imine condensation von Van der Steen, Fred H, Kleijn, Henk, Britovsek, George J. P, Jastrzebski, Johann T. B. H, Van Koten, Gerard

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A new and efficient route to 3-amino-2-azetidinones via zinc enolates of N,N-disubstituted glycine esters von Van der Steen, Fred H, Kleijn, Henk, Jastrzebski, Johann T. B. H, Van Koten, Gerard

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Syntheses of 3-amino-2-azetidinones: A literature survey von van der Steen, Fred H., van Koten, Gerard

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Stereoselective one-pot syntheses of trans-3-amino-β-lactams from zinc enolates of N-protected α-aminoacid esters and imines von van der Steen, Fred H, Jastrzebski, Johann T.B.H, van Koten, Gerard

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Stereoselective synthesis of cis- and trans-.beta.-lactams via .alpha.-amino ester enolates and 1-aza-4-hetero-1,3-butadiene systems. Molecular structure of [cyclic] EtOC(O)C(H)(NE... von Van der Steen, Fred H, Kleijn, Henk, Spek, Anthony L, Van Koten, Gerard

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Synthesis and properties of novel organozinc enolates of N, N-disubstituted glycine esters. Molecular structure of [cyclic][EtZnOC(OMe):C(H)N(tert-Bu)Me]4 [Erratum to document cite... von Van der Steen, Fred H, Boersma, Jaap, Spek, Anthony L, Van Koten, Gerard

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Enantioselective synthesis of a chiral intermediate for aztreonam and related monobactam antibiotics von van der Steen, Fred H., Kleijn, Henk, Spek, Anthony L., van Koten, Gerard

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Spontaneous resolution of an axially dissymmetric 3-carbamoylpyridinium iodide; intrinsic discrimination between the enantiomeric forms by the introduction of a second chiral eleme... von BASTIAANSEN, L. A. M, KANTERS, J. A, VAN DER STEEN, F. H, DE GRAAF, J. A. C, BUCK, H. M

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Synthesis of organozinc enolates of N,N-disubstituted glycine esters. Crystal structure of [EtZnOC(OMe)=C(H)N(t-Bu)Me]4 von VAN DER STEEN, F. H, BOERSMA, J, SPEK, A. L, VAN KOTEN, G

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The syntheses of β-lactams from zinc enolates of N,N-disubstituted α-aminoacid esters and imines: Substituent and solvent effects von van der Steen, Fred H., Kleijn, Henk, Jastrzebski, Johann T.B.H., van Koten, Gerard

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Synthesis of organozinc enolates of N,N-disubstituted glycine esters. Crystal structure of [Et [formula omitted](t-Bu)Me] 4 von van der Steen, Fred H., Boersma, Jaap, Spek, Anthony L., van Koten, Gerard

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Transvaginal prolapse repair with or without the addition of a midurethral sling in women with genital prolapse and stress urinary incontinence: a randomised trial von Ploeg, JM, Oude Rengerink, K, Steen, A, Leeuwen, JHS, Stekelenburg, J, Bongers, MY, Weemhoff, M, Mol, BW, Vaart, CH, Roovers, J‐PWR

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Free cortisol and free 21-deoxycortisol in the clinical evaluation of congenital adrenal hyperplasia von Adriaansen, Bas P H, Utari, Agustini, Olthaar, André J, van der Steen, Rob C B M, Pijnenburg-Kleizen, Karijn J, Berkenbosch, Lizanne, Span, Paul N, Sweep, Fred C G J, Claahsen-van der Grinten, Hedi L, van Herwaarden, Antonius E

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Validity of free testosterone calculation in pregnant women von Schuijt, M P, Sweep, C G J, van der Steen, R, Olthaar, A J, Stikkelbroeck, N M M L, Ross, H A, van Herwaarden, A E

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