Preparation of polychlorinated pyridines from 2,4-dichloro-6-(trichloromethyl)pyridine
申请人:THE DOW CHEMICAL COMPANY
公开号:EP0007160A1
公开(公告)日:1980-01-23
Pentachloropyridine and polychloro derivatives of 2-(trichloromethyl)pyridine are prepared by reacting 2,4- diohloro-6-(trichloromethyl)pyridine in the liquid state with chlorine at temperatures of at least 160°C in the presence of a Lewis acid type catalyst. The products ara useful as herbicides, pesticides, or as chemical intermediates for the preparation of other products useful, for example, as herbicides or . pesticides.
Determination of the phamacophore of penclomedine, a clinically-evaluated antitumor pyridine derivative
作者:Anita Tiwari、William R Waud、Robert F Struck
DOI:10.1016/s0968-0896(02)00243-2
日期:2002.11
The main objective of this investigation was to identify the reactive pharmacophore in penclomedine (PEN, 3,5-dichloro-4,6-dimethoxy-2-(trichloromethyl) pyridine) for in vivo antitumor activity and also to discover related ring structures and sulfur analogues that might exhibit superior antitumor activity in vivo. Several new analogues of PEN and related structural variants have been synthesized and