Suchergebnis: Spiegler, Clive.

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Obrecht, Daniel., Spiegler, Clive., ...

A New General Approach to Enantiomerically Pure Cyclic and Open-Chain (R)- and (S)-α,α-Disubstituted α-Amino Acids
in: Helvetica Chimica Acta, in: Helvetica Chimica Acta . - New York, NY : Wiley-VCH, ISSN 0018-019X, ZDB-ID 1475013-2 Vol. 75 (5. 1992), p. 1666-1696
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1992

A wide range of cyclic and open-chain α,α-disubstituted α-amino acids 1a-p were prepared. The racemic N-acylated α,α-disubstituted amino acids were resolved by coupling to chiral amines 15-18 derived from (S)-phenylalanine to form diastereoisomers 19/20 or 21/22 that could be separated by... mehr

beteiligte Personen:	Obrecht, Daniel. , Spiegler, Clive. , Schönholzer, Peter. , Müller, Klaus. , Heimgartner, Heinz. , Stierli, Friedrich.
Erschienen:	1992.
Serie:	Wiley InterScience Backfile Collection 1832-2000 [Dig. Serial]
Schlagwörter:
URL:	http://dx.doi.org/10.1002/hlca.19920750522

Obrecht, Daniel., Karajiannis, Helena., ...

An Efficient Synthesis of Optically Pure (R)- and (S)-2-(aminomethyl)alanine ((R)- and (S)-ama) and (R)- and (S)-2-(aminomethyl)leucine ((R)- and (S)-aml)Dedicated to Prof. M....
in: Helvetica Chimica Acta, in: Helvetica Chimica Acta . - New York, NY : Wiley-VCH, ISSN 0018-019X, ZDB-ID 1475013-2 Vol. 78 (3. 1995), p. 703-714
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1995

An efficient synthesis of enantiomerically pure (R)- and (S)-2-(aminomethyl)alanine ((R)- and (S)-Ama) 1a and (R)- and (S)-2-(aminomethyl)leucine ((R)- and (S)-Aml) 1b is described (Schemes 1 and 2). Resolution of the racemic amino acids was achieved using L-phenylalanine cyclohexylamide (2) as... mehr

beteiligte Personen:	Obrecht, Daniel. , Karajiannis, Helena. , Lehmann, Christian. , Schönholzer, Peter. , Spiegler, Clive. , Müller, Klaus.
Erschienen:	1995.
Serie:	Wiley InterScience Backfile Collection 1832-2000 [Dig. Serial]
Schlagwörter:
URL:	http://dx.doi.org/10.1002/hlca.19950780317

Obrecht, Daniel., Bohdal, Udo., ...

L-Phenylalanine Cyclohexylamide: A simple and convenient auxiliary for the synthesis of optically pure α,α-disubstituted (R)- and (S)-amino acids
in: Helvetica Chimica Acta, in: Helvetica Chimica Acta . - New York, NY : Wiley-VCH, ISSN 0018-019X, ZDB-ID 1475013-2 Vol. 78 (3. 1995), p. 563-580
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1995

Obrecht, Daniel., Altorfer, Michael., ...

Design and synthesis of novel nonpolar host peptides for the determination of the 310- and α-helix compatibilities of α-amino acid buildig blocks: An assessment of...
in: Biopolymers, in: Biopolymers . - New York : John Wiley & Sons, Inc., ISSN 0006-3525, ZDB-ID 1480801-8 Vol. 42 (5. 1997), p. 575-626
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1997