Facile Rearrangements of Alkynylamino Heterocycles with Noble Metal Cations
作者:Roger Lok、Ronald E. Leone、Antony J. Williams
DOI:10.1021/jo952101z
日期:1996.1.1
A number of 2-(alkynylamino)-substituted heterocycles have been synthesized. These heterocycles rearrange in the presence of silver(I) and gold(I) salts to give novel 2H-pyrimido[2,1-b]benzoxazoles, 2H-pyrimido[2,1-b]benzothiazoles, and a 2H-pyrimido[2,1-b]benzoselenazole. Two of the the 2H-pyrimido[2,1-b]benzoxazoles were isolated in good yield. The kinetics of the silver tetrafluoroborate-catalyzed rearrangements of selected (alkynylamino)benzoxazoles and benzothiazoles have been examined by H-1 NMR in CD3CN. Factors affecting the electron densities of the triple bond and of the nitrogen atom in the heterocycle are important in influencing the rate of rearrangement.
A study of the kinetics of the interaction of benzoxazoline-2-thiones with butylamine
作者:D. Simov、K. Davidkov、L. Prangova
DOI:10.1007/bf00506387
日期:1984.9
ANTIBIOTIC COMPOUNDS
申请人:DISCUVA LTD.
公开号:US20190194179A1
公开(公告)日:2019-06-27
The present invention relates to antibiotic compounds of formula (I), to compositions containing these compounds and to methods of treating bacterial diseases and infections using the compounds. The compounds find application in the treatment of infection with, and diseases caused by, Gram-positive and/or Gram-negative bacteria, and in particular in the treatment of infection with, and diseases caused by,
Neisseria gonorrhoeae
.
US5347008A
申请人:——
公开号:US5347008A
公开(公告)日:1994-09-13
[EN] SUBSTITUENT-INCLUDING UREA COMPOUND<br/>[FR] COMPOSÉ D'URÉE COMPRENANT UN SUBSTITUANT<br/>[JA] 置換基を有するウレア化合物