95598-13-3Relevant articles and documents
Catalytic Asymmetric Synthesis of Unprotected β2-Amino Acids
Zhu, Chendan,Mandrelli, Francesca,Zhou, Hui,Maji, Rajat,List, Benjamin
, p. 3312 - 3317 (2021/04/07)
We report here a scalable, catalytic one-pot approach to enantiopure and unmodified β2-amino acids. A newly developed confined imidodiphosphorimidate (IDPi) catalyzes a broadly applicable reaction of diverse bis-silyl ketene acetals with a silylated aminomethyl ether, followed by hydrolytic workup, to give free β2-amino acids in high yields, purity, and enantioselectivity. Importantly, both aromatic and aliphatic β2-amino acids can be obtained using this method. Mechanistic studies are consistent with the aminomethylation to proceed via silylium-based asymmetric counteranion-directed catalysis (Si-ACDC) and a transition state to explain the enantioselectivity is suggested on the basis of density functional theory calculation.
INHIBITORS OF AKT ACTIVITY
-
Page/Page column 44, (2008/12/04)
Invented are novel pyrazole compounds, the use of such compounds as inhibitors of protein kinase B activity and in the treatment of cancer and arthritis.
Efficient synthesis of β2-amino acid by homologation of α-amino acids involving the reformatsky reaction and Mannich-type imminium electrophile
Moumne, Roba,Lavielle, Solange,Karoyan, Philippe
, p. 3332 - 3334 (2007/10/03)
Development of new methods for the synthesis of β-amino acids is important as polymers of these compounds are promising peptidomimetic candidates in medicinal chemistry. We report here our findings on a new and highly efficient general strategy for the synthesis of β2-amino acids by homologation of α-amino acids, involving the Reformatsky reaction and Mannich-type imminium electrophile.
