Synthetic Approaches to Physiologically Active Polycyclic Compounds: IV. X-Ray Diffraction Study of Isomeric Amino Acid Derivatives of Adamantane

2004 ◽  
Vol 40 (4) ◽  
pp. 502-505 ◽  
Author(s):  
O. N. Zefirova ◽  
E. V. Nurieva ◽  
A. N. Chekhlov ◽  
S. M. Aldoshin ◽  
P. N. Nesterenko ◽  
...  
Keyword(s):  
Amino Acid ◽  
Diffraction Study ◽  
Amino Acid Derivatives ◽  
X Ray Diffraction ◽  
Polycyclic Compounds ◽  
X Ray ◽  
Synthetic Approaches ◽  
Derivatives Of

Metallkomplexe mit biologisch wichtigen Liganden, CIV [1]. ortho-Palladierte Komplexe von N,N-Dimethyl-C-phenyl-glycinmethylester. Synthese von α-Aminosäure-Derivaten durch Insertion von Isocyaniden, CO, Alkenen und Alkinen in die Pd-C-Bindung / Metal Complexes of Biologically Important Ligands, CIV [ 1]. ortho-Palladated Complexes of N,N-Dimethyl-C-phenylglycine-methylester. Synthesis of α-Amino Acid Derivatives by Insertion of Isocyanides, CO, Alkenes, and Alkynes into the Pd-C Bond

1998 ◽  
Vol 53 (4) ◽  
pp. 448-458 ◽  
Author(s):  
Andreas Böhm ◽  
Kurt Polborn ◽  
Karlheinz Sünkel ◽  
Wolfgang Beck
Keyword(s):  
Acetic Acid ◽  
Amino Acid ◽  
Metal Complexes ◽  
Crystal Structures ◽  
Trinuclear Complex ◽  
Amino Acid Derivatives ◽  
X Ray Diffraction ◽  
X Ray ◽  
Derivatives Of ◽  
Amine Ligand

Abstract N,N-Dimethyl-C-phenylglycinemethylester reacts with Pd(OAc)2 in acetic acid to give the orthopalladated, acetato bridged complex 1. Treatment of 1 with sodium halide affords the chloro, bromo, and iodo bridged compounds [Me2NC(H)(CO2Me)C6H4PdX]2 (2a -c) (X = halide). From 2a and 1,1′-bis(diphenylphosphino)ferrocene the phosphine bridged trinuclear complex 3 is obtained. Substitution of the amine ligand of 2a by the phosphino group is observed for the reaction of 2a with Ph2PC(Me)C(Me)PPh2. Insertion of 2,6-dimethyl-phenylisocyanide, CO, alkyl-vinyl-ketones, and diphenylacetylene into the Pd-C bond o f 2a -c provides the orthosubstituted organic and organometallic derivatives of phenylglycine 6a -c, 7, 8a -b and 9a -c. The crystal structures of 1, 4a, 6a, 7 and 9a were determined by X-ray diffraction.

An X-ray diffraction study of inhibited derivatives of α-chymotrypsin

1966 ◽  
Vol 15 (1) ◽  
pp. 175-192 ◽  
Author(s):  
P.B. Sigler ◽  
B.A. Jeffery ◽  
B.W. Matthews ◽  
D.M. Blow
Keyword(s):  
Diffraction Study ◽  
X Ray Diffraction ◽  
X Ray ◽  
Derivatives Of

Formation of a Turn like Structure in BocNH(CH2)2CON(C6H11)CONH(C6H11): An X-Ray Diffraction Study

2003 ◽  
Vol 2003 (8) ◽  
pp. 502-503 ◽  
Author(s):  
Pooja Anjali Mazumdar ◽  
Sandip Kumar Kundu ◽  
Amit Kumar Das ◽  
Valerio Bertolasi ◽  
Animesh Pramanik
Keyword(s):  
Hydrogen Bonding ◽  
Amino Acid ◽  
Diffraction Study ◽  
Molecular Hydrogen ◽  
Peptide Design ◽  
X Ray Diffraction ◽  
X Ray ◽  
Crystallographic Study

β-Alanine is an amino acid which is important in the design of diverse peptides. Crystallographic study shows that the N-acyl adduct of β-Alanine, an ω-amino acid important in peptide design for the production of structural and functional diversities, and N,N′-dicyclohexyl urea(DCU) forms a turn like structure without any intra-molecular hydrogen bonding.

Dynamic NMR and X-ray diffraction study of (N-B)-diphenyl(2-aminoethoxy) borane derivatives of ephedrines and pseudoephedrines

1997 ◽  
Vol 544 (2) ◽  
pp. 175-188 ◽  
Author(s):  
Herbert Höpfl ◽  
Norberto Farfán ◽  
Dolores Castillo ◽  
Rosa Santillan ◽  
Rosalinda Contreras ◽  
...  
Keyword(s):  
Diffraction Study ◽  
Dynamic Nmr ◽  
X Ray Diffraction ◽  
X Ray ◽  
Derivatives Of

Metal complexes of biologically important ligands, LXXVIII. Synthesis of palladium complexes of ferrocenyl-substituted amino acid derivatives

1995 ◽  
Vol 73 (7) ◽  
pp. 1164-1174 ◽  
Author(s):  
Doris Freiesleben ◽  
Kurt Polborn ◽  
Christian Robl ◽  
Karlheinz Sünkel ◽  
Wolfgang Beck
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Metal Complexes ◽  
Palladium Complexes ◽  
Amino Acid Derivatives ◽  
Amino Acid Esters ◽  
X Ray Diffraction ◽  
Chelate Complexes ◽  
X Ray ◽  
Acid Esters

Schiff bases from ferrocene aldehyde and α-amino acidates react with PdCl2 or Na2PdCl4 to give N,O-chelate complexes (2a–e, 3). The related N-ferrocenylmethylen-α-amino acid esters give, with Pd(OAc)2, cyclopalladated acetate-bridged complexes (4a,b). N,O-chelate complexes (5–7) are obtained from Na2PdCl4 with N-ferrocenylmethyl prolinate and-alaninate as well as with N,N-dibenzyl glycinate. The ethyl ester of N,N-dibenzylglycine and Pd(OAc)2 form the cyclopalladated acetate-bridged complex 8, while the ester of N-monobenzylglycine and Na2PdCl4 affords trans-PdCl2(L)2 with a monodentate N-coordinated ligand. The structures of 2a, 4a, 5, 7, and 9 were determined by X-ray diffraction. Keywords: ferrocene, amino acids, palladium(II) complexes, crystal structures.

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