[EN] IMIDAZOPYRAZINE DERIVATIVES, PROCESS FOR PREPARATION THEREOF, AND THEIR USES AS LUCIFERINS<br/>[FR] DÉRIVÉS D'IMIDAZOPYRAZINE, LEUR PROCÉDÉ DE PRÉPARATION ET LEURS UTILISATIONS EN TANT QUE LUCIFÉRINES
申请人:PASTEUR INSTITUT
公开号:WO2018197727A1
公开(公告)日:2018-11-01
The present invention is in the field of bioluminescence in biology and/or medicine. In particular, the invention provides imidazopyrazine derivatives, processes for preparation thereof, and their uses as luciferins.
Biphenyl aldehyde-based ternary catalytic system catalyzed Tsuji–Trost allylation of N-unprotected amino acid esters
作者:Zhao-Wei Wu、Wei Wen、Qi-Xiang Guo
DOI:10.1016/j.tet.2022.133235
日期:2023.2
the direct α-allylation reaction of N-unprotected amino acid esters and allyl alcohol acetates. The chemoselectivity of C-allylation and N-allylation is efficiently controlled and various racemic α,α-disubstituted amino acid esters are generated in good-to-high yields. The target products can be readily converted into structurally diverse α,α-disubstituted amino acids at a gram scale.
to manzacidins A and D, here we report a highly efficient catalyticasymmetric α-allenylic alkylation reaction of NH2-unprotected aminoacid esters that is promoted by combined chiral aldehyde/palladium catalysis. Fifty examples of unnatural α,α-disubstituted aminoacid esters are reported with good-to-excellent yields and stereoselectivities. Based on this methodology, a key intermediate leading to
IMIDAZOPYRAZINE DERIVATIVES, PROCESS FOR PREPARATION THEREOF, AND THEIR USES AS LUCIFERINS
申请人:Institut Pasteur
公开号:EP3395803A1
公开(公告)日:2018-10-31
The present invention is in the field of bioluminescence in biology and/or medicine. In particular, the invention provides imidazopyrazine derivatives, processes for preparation thereof, and their uses as luciferins.
Sequential C–N and C–O Bond Formation in a Single Pot: Synthesis of 2<i>H</i>-Benzo[<i>b</i>][1,4]oxazines from 2,5-Dihydroxybenzaldehyde and Amino acid Precursors
作者:Javed Iqbal、Neelima D. Tangellamudi、Balakrishna Dulla、Sridhar Balasubramanian
DOI:10.1021/ol2031747
日期:2012.1.20
Functionalized beta-aryl alanine ester derivatives were found to undergo rapid C-N and C-O bond formation with quinol carbonyl compounds to afford 2H-benzo[b][1,4]oxazines in good to excellent yields. This unprecedented finding reported herein offers a straightforward, highly efficient, and rapid method for the synthesis of 2H-benzo[b][1,4]oxazines.