申请人:Laboratoire Roger Bellon
公开号:US05484921A1
公开(公告)日:1996-01-16
This invention relates to a method for the preparation of benzo[b]naphthyridines having the general formula (I) ##STR1## comprising: 1) condensation of an amine having the formula R'--NH--CH.sub.2 --CH.sub.2 --R" with a chlorofluoroquinoline of formula (II) ##STR2## 2) cyclization of the obtained fluoroquinoline of formula (IV) ##STR3## and; 3) oxidation of tetrahydro-1,2,3,4benzo[b]naphthyridine-1,8 of formula (V) ##STR4## is effected, and then, optionally, the ester obtained is transformed into an acid and optionally into a salt.
这项发明涉及一种制备具有通式(I)的苯并[b]萘啉的方法,包括:1)将具有通式R'--NH--CH.sub.2--CH.sub.2--R"的胺与具有通式(II)的氯氟喹啉进行缩合;2)将得到的氟喹啉进行环化得到具有通式(IV)的产物;3)氧化得到的四氢-1,2,3,4-苯并[b]萘啉-1,8(通式V),然后可选地将所得酯转化为酸,再可选地转化为盐。