1
|
Dölling K. Synthesis and reactivity of β-stannylated phenylalanines. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2017. [DOI: 10.1515/znb-2017-0060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The free radical hydrostannation of a series of N-benzoyl and N-acetyl dehydrophenylalanine esters 2a
–
h yields β-stannylated phenylalanine derivatives 3 and 4. This addition of tin hydride to such unsaturated compounds simultaneously creates two new chiral centers leading to mixtures of two diastereomeric pairs of enantiomers. The reaction of 3-stannylated phenylalanine 3 with methanolic HCl yields chlorostannyl-substituted compounds 5 and 6 and, with one equivalent of bromine, the bromostannylated compounds 7 and 8 are formed. The bromostannylated phenylalanine derivative 7 reacts with one further equivalent of bromine to produce the dibromostannylated compound 9. Even the chlorostannylated phenylalanine derivative 5 reacts with one further equivalent of HCl to give the dichlorostannylated compound 10. The products were characterized by elemental analysis, infrared (IR), and multinuclear (1H, 13C, 119Sn) nuclear magnetic resonance (NMR) spectroscopy. Attempts were made to assign the preferred conformation of the stannylated phenylalanine derivatives using Karplus-type relationship of coupling constants 3
J(H,H), 3
J(Sn,H), and 3
J(Sn,C=O). The results of these analyses have been confirmed by three crystal structure determinations.
Collapse
Affiliation(s)
- Karin Dölling
- Martin-Luther Universität Halle-Wittenberg , Biozentrum, 06099 Halle , Germany
| |
Collapse
|
2
|
Vafaee M, Amini MM, Khavasi HR, Ng SW, Tiekink ERT. Synthesis, structural characterization and antimicrobial activity of mixed aryl-alkyl diorganotin(IV) compounds with quinoline-2-carboxylate (L−): {RR′SnLCl}n and RR′SnL2. Appl Organomet Chem 2012. [DOI: 10.1002/aoc.2890] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Marzieh Vafaee
- Department of Chemistry; Shahid Beheshti University; Tehran; 1983963113; Iran
| | - Mostafa M. Amini
- Department of Chemistry; Shahid Beheshti University; Tehran; 1983963113; Iran
| | - Hamid Reza Khavasi
- Department of Chemistry; Shahid Beheshti University; Tehran; 1983963113; Iran
| | | | | |
Collapse
|
3
|
Meunier-Piret J, van Meerssche M, Gielen M, Vanden Eynde I. Molecular Structure Determination and Spectroscopic Investigation of {Mn (CO)4 [S- (C6H5) 2P-N (CH3) [CH(CH3) (C6H5)]]}2. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bscb.19840930406] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
4
|
Gielen M, Biesemans M, Willem R. Organotin compounds: from kinetics to stereochemistry and antitumour activities. Appl Organomet Chem 2005. [DOI: 10.1002/aoc.771] [Citation(s) in RCA: 159] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
5
|
Albano VG, Castellari C, Monari M, De Felice V, Panunzi A, Ruffo F. Addition−Elimination Equilibria Involving 16e- Platinum(0) and 18e- Platinum(II) Complexes. Organometallics 1996. [DOI: 10.1021/om960268s] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | - Vincenzo De Felice
- Facoltà di Agraria, Università del Molise, via Tiberio 21/A, Campobasso I-86100, Italy
| | | | | |
Collapse
|
6
|
Single crystal and molecular structure of methylphenyltin(IV) dichloride, intermediate between polymeric and monomeric R2SnCl2 structures. J Organomet Chem 1987. [DOI: 10.1016/0022-328x(87)80199-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
7
|
|
8
|
|
9
|
Vanden Eynde I, Gielen M, Stühler G, Mannschreck A. Complete separation of the enantiomers of a tetraorganotin by chromatography on microcrystalline cellulose triacetate and fractional crystallization. Polyhedron 1982. [DOI: 10.1016/s0277-5387(00)81059-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|