Process for the preparation of aminotriazine derivatives
申请人:Ciba-Geigy Corporation
公开号:US05648487A1
公开(公告)日:1997-07-15
A process for the preparation of a compound of the formula ##STR1## where Z and R are defined herein. A compound of formula II ##STR2## where R.sub.1 defined herein, is reacted with hydrazine hydrate and then subjected to hydrolysis to form the compound of formula I ##STR3## and the compound of the formula I is reacted with the aldehyde of the formula ##STR4## into the resulting compound of the formula IV.
Process for the preparation of aqueous nicotinaldehyde
申请人:Ciba-Geigy Corporation
公开号:US05646288A1
公开(公告)日:1997-07-08
A process for the preparation of an aqueous medium of nicotinaldehyde by the catalytic reduction of 3-cyanopyridine under hydrogen in the presence of Raney-nickel.
This invention is directed to a compound of formula (I):
wherein R
1
, R
2
, R
3
, R
4
and L
1
are as defined herein, a pharmaceutical composition comprising the compound, and the use of the compound to treat allergic and/or inflammatory disorders, particularly disorders such as allergic rhinitis, asthma and/or chronic obstructive pulmonary disease (COPD).