- Full text PDF available (4)
- This year (0)
- Last 5 years (1)
- Last 10 years (5)
Journals and Conferences
α-Heterocyclic α-aminoesters were obtained in good yields by reaction of a glycine cation equivalent and different heterocyclic nucleophiles; diastereoselectivity using a carbohydrate (galactopyranose) as N-protecting group was modest.
Interest in non-natural amino acids is growing because of their potential biological activity. We describe in this paper, a synthesis of phosphonic analogues of 4-hydroxy proline and 5-hydroxy pipecolic acid.
The asymmetric unit of the title compound, C(10)H(6)N(2)O(2), contains two independent mol-ecules. The dihedral angles between the acetonitrile and the 1H-isoindole-1,3(2H)-dione units are 69.0 (7)° and 77.0 (5)° in the two mol-ecules. One of the two terminal N atoms is disordered over two positions in a 0.66 (8):0,34 (8) ratio. In the crystal structure,… (More)
Interest in non-natural alpha-amino acids is growing because of their potential biological activity. We describe, in this paper, a synthesis of beta-tetrazolyl alpha-amino esters by action of 5-aryl tetrazoles, 2, on N-benzyloxycarbonyl di-dehydro methylalaninate, 3.
In the structure of the title compound, C(9)H(8)N(2)O, the amide group is twisted by a dihedral angle of 21.86 (7)° with respect to the benzene ring, while the planes of the benzene ring and cyano-methyl group form a dihedral angle of 53.13 (11)°. In the crystal structure, mol-ecules are linked via N-H⋯O hydrogen bonds, forming a chain running parallel to… (More)
We conducted a study on the perception towards videogames among pre-service teachers in three Regional Teachers' Training Centers in Morocco (Centres Régionaux des Métiers de l'Education et de la Formation (CRMEF)). 180 pre-service teachers responded to our primary general survey which mainly focused on their perceptions and attitudes… (More)
In the mol-ecule of the title compound, C(15)H(11)NS, the butterfly angle between the two planes defined by the two wings of the phenothia-zine unit is 33.5 (8)°. The dihedral angles between the two benzene rings and the propynyl group are 85 (4) and 63 (4)°.
We report here the synthesis of biheterocyclic alpha-amino acids by 1,3 dipolar cycloaddition of acetylenic compounds on alpha-azido alpha-amino esters.