Asymmetric synthesis of new β-heterocyclic (S)-α-aminopropionic acids
作者:Ashot S. Saghyan、Hayarpi M. Simonyan、Lala A. Stepanyan、Samvel G. Ghazaryan、Arpine V. Geolchanyan、Luiza L. Manasyan、Vahe T. Ghochikyan、Tariel V. Ghochikyan、Nelli A. Hovhannisyan、Ashot Gevorgyan、Viktor O. Iaroshenko、Peter Langer
DOI:10.1016/j.tetasy.2012.05.022
日期:2012.6
The asymmetric synthesis of novel non-proteinogenic beta-heterocyclic alpha-amino acids via the diastereoselective conjugate addition of heterocyclic nucleophiles to the dehydroalanine moiety of chiral Ni(II) complexes has been studied. The complexes were formed from the Schiff base of dehydroalanine using (S)-2-N-(N-benzylprolyl)aminobenzophenone as a chiral auxiliary. After decomposition of the complexes, the a-amino acids were isolated with 30-99% ee. (c) 2012 Published by Elsevier Ltd.
Transformations of some substituted 5-benzyl-1,2,4-triazoline-3-thiones
作者:S. M. Khripak、M. M. Tsitsika、I. V. Smolanka
DOI:10.1007/bf00959976
日期:1975.6
Strzemecka, Leokadia, Polish Journal of Chemistry, 1983, vol. 57, # 4/5/6, p. 567 - 571
作者:Strzemecka, Leokadia
DOI:——
日期:——
STRZEMECKA, L., POL. J. CHEM., 1983, 57, N 4-6, 561-566
作者:STRZEMECKA, L.
DOI:——
日期:——
STRZEMECKA, L., POL. J. CHEM., 1983, 57, N 4-6, 567-571