54430-64-7Relevant articles and documents
AMINOACYL DERIVATIVES OF NUCLEOSIDES, NUCLEOTIDES, AND POLYNUCLEOTIDES 17. POSSIBLE USE OF N,N'-THIOCARBONYLDIIMIDAZOLE FOR SYNTHESIS OF 2'(3')-O-AMINOACYLNUCLEOTIDES
Purygin, P. P.,Laletina, Z. P.
, p. 2356 - 2358 (1983)
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N-carbamate protected amino acid derived guanidine organocatalysts
Al-Taie, Zahraa S.,Anderson, Joseph M.,Bischoff, Laura,Christensen, Jeppe,Coles, Simon J.,Froom, Richard,Gibbard, Mari E.,Jones, Leigh F.,de Kleijne, Frank F.J.,Murphy, Patrick J.,Thompson, Emma C.
, (2021/05/05)
We report the preparation of a range of N-protected amino acid derived guanidine organocatalysts and their application to the Michael addition of 2-hydroxy-1,4-napthoquinone to β-nitrostyrene, achieving a maximum ee of 26%. Whilst these catalysts gave poo
Synthesis and preliminary biological evaluations of (+)-isocampholenic acid-derived amides
Gro?elj, Uro?,Golobi?, Amalija,Knez, Damijan,Hrast, Martina,Gobec, Stanislav,Ri?ko, Sebastijan,Svete, Jurij
, p. 667 - 676 (2016/07/12)
The synthesis of two novel (+)-isocampholenic acid-derived amines has been realized starting from commercially available (1S)-(+)-10-camphorsulfonic acid. The novel amines as well as (+)-isocampholenic acid have been used as building blocks in the constru
Cu(I)-catalyzed [3+2] cycloadditions of tert-butyl (S)-(3-oxopent-4-yn-2- yl)carbamate to 1-benzylidenepyrazole-3-one-derived azomethine imines
Pusavec, Eva,Mirnik, Jona,Senica, Luka,Groselj, Uros,Stanovnik, Branko,Svete, Jurij
, p. 615 - 626 (2014/06/10)
Parallel screening of suitable reaction conditions for Cu(I)-catalyzed [3+2] cycloadditions of (1Z,4R*,5R*)-4- benzoylamino-1-benzylidene-5-phenyl-3-oxopyrazolidin-1-ium-2-ide (1a) to methyl propiolate (2) has established that this reaction proceeds smoothly at room temperature in acetonitrile in the presence of CuI and Huenig's base. The optimized reaction conditions were then applied in regio- and stereo-selective 1,3-dipolar cycloadditions of racemic azomethine imines 1a-e to tert-butyl (S)-(3-oxopent-4-yn-2-yl)carbamate (6) leading to mixtures of diastereomeric non-racemic chromatographically separable cycloadducts 7a-d, 7′ a-d, 8e, and 8′e. The structures of the products were confirmed by NMR spectroscopy.