Design, Synthesis and Antibacterial Activity of Coumarin-1,2,3-triazole Hybrids Obtained from Natural Furocoumarin Peucedanin
作者:Alla V. Lipeeva、Danila O. Zakharov、Liubov G. Burova、Tatyana S. Frolova、Dmitry S. Baev、Ilia V. Shirokikh、Alexander N. Evstropov、Olga I. Sinitsyna、Tatyana G. Tolsikova、Elvira E. Shults
DOI:10.3390/molecules24112126
日期:——
Synthesis of 1,2,3-triazole-substituted coumarins and also 1,2,3-triazolyl or 1,2,3-triazolylalk-1-inyl-linked coumarin-2,3-furocoumarin hybrids was performed by employing the cross-coupling and copper catalyzed azide-alkyne cycloaddition reaction approaches. The synthesized compounds were evaluated for their in vitro antibacterial activity against Staphylococcus aureus, Bacillius subtilis, Actinomyces
Synthetic Transformations of Higher Terpenoids. 37. Synthesis and Cytotoxicity of 4-(Oxazol-2-Yl)-18-Norisopimaranes
作者:M. A. Gromova、Y.u V. Kharitonov、M. A. Pokrovskii、I. Yu. Bagryanskaya、A. G. Pokrovskii、E. E. Shul’ts
DOI:10.1007/s10600-019-02613-x
日期:2019.1
synthesized. Reduction of the azide produced the terpenoid 5-aminomethyloxazole. Reaction of 4-[5-(bromomethyl)oxazol-2-yl]-18-norisopimarane with methyl esters of aminoacids in DMF in the presence of potash synthesized compounds with oxazole C-5 amino-acid substituents. Cytotoxicity of the new isopimaric acidderivatives gainst CEM-13, MT-4, U-937, MCF-7, and MDA-MB-231 human tumor cells was studied
LiOH-mediated N-monoalkylation of α-amino acid esters and a dipeptide ester using activated alkyl bromides
作者:Jong Hyun Cho、B.Moon Kim
DOI:10.1016/s0040-4039(01)02394-2
日期:2002.2
Selective N-monoalkylation of α-aminoesters with activated alkyl bromides was studied using various alkali or alkali earth metal bases. In the production of N-monoalkylated amino ester derivatives and suppression of N,N-dialkylation, lithium hydroxide was more effective than any other alkali or alkali earth bases examined. Using this protocol, a variety of N-alkylated α-aminoesters and even dipeptide