| 摘要 |
Compounds of formula <IMAGE> (I) wherein A represents a lower alkylene chain optionally containing one double or triple bond, RO represents (lower)alkoxy, aryl(lower)alkoxy, hydroxy or protected hydroxy, R1 and R2 which may be the same or different each represent hydrogen, hydroxyl, lower alkyl, lower alkoxy, halo(lower)alkyl, halogen, amino or mono- or di(lower)alkylamino and R3 and R4 each independently represent hydrogen or lower alkyl and their pharmaceutically acceptable acid addition salts are useful as hypoglycaemics or as intermediates for hypoglycaemics.
|
