The pyrrolo[2,3-d]pyrimidine nucleoside antibiotics tubercidin, toyocamycin, and sangivamycin and the synthetic analogues 5-chloro-, 5,6-dichloro-, 5-bromo-, 6-bromo-, 5,6-dibromo-, 5-iodo-, 5-(1-hydroxyethyl)-, 5-(1-methoxyethyl)-, (E)-5-(2-bromoethenyl)-, (E)-5-(2-cyanoethenyl)-, 5-(2-buten-1-yl)-, 5-(3-hydroxypropyl)-, and 5-butyltubercidin were evaluated for their antiviral properties again...

In the mol-ecule of the title compound, C(15)H(13)Cl(2)N(3)O(2), the triazole ring is oriented at dihedral angles of 14.8 (2) and 81.5 (1)° to the furan and dichloro-benzene rings, respectively. The dihedral angle between the dichloro-benzene and furan rings is 86.3 (2)°. An intra-molecular C-H⋯O hydrogen bond results in the formation of a planar [maximum deviation 0.012 (2) Å] five-membered ri...

The conformation of the H-N-C=O unit in the title compound, C(13)H(9)Cl(2)NO, is trans, similar to the conformation observed in N-(3-chloro-phen-yl)benzamide, N-(2,3-dichloro-phen-yl)benzamide, N-(2,4-dichloro-phen-yl)benzamide, N-(2,6-dichloro-phen-yl)benzamide and N-(3,4-dichloro-phen-yl)benz-amide. The amide group makes dihedral angles of 14.3 (8) and 44.4 (4)° with the benzoyl and aniline r...

The enol phosphate 2,2-dichloro-1-(trichloromethyl)ethenyl diethyl phosphate (1), easily available by a Perkow reaction between hexachloroacetone and triethyl phosphite, reacts with sodium trifluoroethoxide/trifluoroethanol in the presence of cyclic 5-membered 1,3-dienes to furnish alpha,alpha,alpha',alpha'-tetrachloro-substituted[3.2.1]bicyclic ketones 2. A [4+3] cycloaddition of a tetrachloro...

4,6-Dichloro-2-(methylthio)pyrimidine (3) reacts with EtONa in EtOH, at ca. 20 ◦C, for 2 h, to give exclusively 4-chloro-6-ethoxy-2-(methylthio)pyrimidine (5) in 89% yield. The latter is presented as a useful multifunctionalised pyrimidine scaffold.

We use mass spectrometry analysis and molecular modelling to show the established antimicrobial inhibitor 4,5-dichloro-1,2-dithiol-3-one (HR45) acts by forming a covalent adduct with the target β-ketoacyl-ACP synthase III (FabH). The 5-chloro substituent directs attack of the essential active site thiol (C112) via a Michael-type addition elimination reaction mechanism.

Z. Naturforsch. 54 b, 209-213 (1999); received September 9, 1998 Phosphinine Complex, Platinum, X-Ray Data, NMR Data, frans-Influence C/5-Dichloro-bis(2 ,6 -dimethyl-4 -phenyl-77'-phosphinine)platinum (3) has been prepared by ligand substitution from cis -dichloro(2,5-cyclooctadiene)platinum and characterized by spec­ troscopy ('H , 13C, 31P NMR, IR, UV-Vis), CV and X-ray diffraction (space gro...