Assembling of medium/long chain-based β-arylated unnatural amino acid derivatives via the Pd(II)-catalyzed sp3 β-C-H arylation and a short route for rolipram-type derivatives
paper, we report the assembling of libraries of β-arylated short/medium/long chain-based non-α-amino acid (aminoalkanoic acid) derivatives via the Pd(II)-catalyzed, bidentate directing group 8-aminoquinoline-aided sp3 β-C-H activation/arylation method. Short/medium chain-based unnatural amino acid derivatives containing an aryl group at the β-position are promising small molecules with therapeutic
VASILEVA, O. S.;USIK, N. V.;SINILINA, I. P.;SMIRNOVA, A. A., METODY SINTEZA, STROENIE I XIM. PREVRASHCHENIYA NITROSOED. I AMINOKISLOT,+
作者:VASILEVA, O. S.、USIK, N. V.、SINILINA, I. P.、SMIRNOVA, A. A.
DOI:——
日期:——
Divergent Synthesis of γ‐Amino Acid and γ‐Lactam Derivatives from<i>meso</i>‐Glutaric Anhydrides
作者:Simon N. Smith、Ryan Craig、Stephen J. Connon
DOI:10.1002/chem.202003280
日期:2020.10.21
The first divergent synthesis of both γ‐amino acid and γ‐lactam derivatives from meso‐glutaric anhydrides is described. The organocatalytic desymmetrisation with TMSN3 relies on controlled generation of a nucleophilic ammonium azide species mediated by a polystyrene‐bound base to promote efficient silylazidation. After Curtius rearrangement of the acyl azide intermediate to access the corresponding
作者:A. N. Reznikov、V. A. Ostrovskii、Yu. N. Klimochkin
DOI:10.1134/s1070428018110155
日期:2018.11
Nonracemic 3-substituted 4-(1H-tetrazol-1-yl)butanoic acids, analogs of the neurotropic drugs phenibut, tolibut, and baclofen, were synthesized by a three-component reaction of the R-isomers of the corresponding amino acids, triethyl orthoformate, and sodium azide. The key stage of the synthesis is the asymmetric addition of diethyl malonate to nitroalkenes, catalyzed by a Ni(II) complex of (S,S)-N