Hydantoin nucleosides were synthesized from a protected methyl 2-deoXy-D-ribofuranoside in a Friedel-Crafts catalyzed silyl-Hilbert-Johnson reaction as modified by Vorbruggen. Atypical byproducts are accounted for by assuming the initial step being a ring opening of the sugar to give an acyclic glycos-1-yl cation.
Synthesis and Antimicrobial Activity of Thiohydantoins Obtained from L-Amino Acids
作者:Priscila Goes Camargo de Carvalho、Jhonatan Macedo Ribeiro、Renata Perugini Biasi Garbin、Gerson Nakazato、Sueli Fumie Yamada Ogatta、Ângelo de Fátima、Marcelle de Lima Ferreira Bispo、Fernando Macedo
DOI:10.2174/1570180816666181212153011
日期:2019.12.31
by reaction of L-amino acids with thiourea or ammonium thiocyanate. Their antimicrobial activities were evaluated against bacterial strains by broth microdilution assays. The time-kill kinetics, the antibiofilm activity and the cytotoxicity to mammalian cells were determined for the compound that exhibited the best antimicrobial profile (1b). Results: Eleven thiohydantoins were readily obtained in good
Combined DFT calculation, Hirshfeld surface analysis, and Energy framework study of non-covalent interactions in the crystal structure of (Z)-5-ethylidene-2-thiohydantoin determined by powder X-ray diffraction
作者:Gerzon E. Delgado、Asiloé J. Mora、Luis E. Seijas、Luis Rincón、Gustavo Marroquin、Jonathan Cisterna、Alejandro Cárdenas、Iván Brito
DOI:10.1016/j.molstruc.2021.130361
日期:2021.7
crystal structure was determined and refined by powder X-raydiffraction techniques. This material crystallizes in the monoclinic system with space group P21/c, Z=4. The crystal packing is controlled by N–H•••O, N–H•••S and C–H•••O hydrogen bond interactions, forming infinite two-dimensional sheets with graph-set motifs R22(8), R12(7), and R66(26). NCI calculations, Hirshfeld surface analysis, and the