申请人:THE WELLCOME FOUNDATION LIMITED
公开号:EP0249950A1
公开(公告)日:1987-12-23
Compounds of the formula (IX):
or an ester, or amide thereof, wherein X is nitrogen; the group R¹CO₂H is attached to the 6-position of the pyridine ring; R¹ is (CH₂)n wherein n is an integer 1 to 7, or (CH₂)aCH=CH(CH₂)b wherein a and b are independently 0 to 5 and the sum of a and b does not exceed 5; and R⁴ is hydrogen, halogen, C1-4 alkyl, C1-4 alkoxy or trifluoromethyl. The compounds are useful intermidiates for the preparation of certain aromatic compounds having antihistaminic activity.
式(IX)化合物:
或其酯或酰胺,其中 X 为氮;基团 R¹CO₂H 连接到吡啶环的 6 位;R¹为(CH₂)n,其中 n 为 1 至 7 的整数,或 (CH₂)aCH=CH(CH₂)b ,其中 a 和 b 独立地为 0 至 5,且 a 和 b 之和不超过 5;以及 R⁴ 为氢、卤素、C1-4 烷基、C1-4 烷氧基或三氟甲基。这些化合物是制备某些具有抗组胺活性的芳香族化合物的有用中间体。