申请人:Fisons plc
公开号:US04614802A1
公开(公告)日:1986-09-30
Disclosed are compounds of the formula ##STR1## in which R is hydrogen or alkyl C.sub.1 to C.sub.6 and R.sub.5 and R.sub.10, which may be the same or different, are hydrogen or alkyl C.sub.1 to C.sub.6, X represents a group --AR.sub.6, A is CO or SO.sub.2 and R.sub.6 is halogen, C.sub.1 -C.sub.6 haloalkyl, C.sub.1 -C.sub.6 alkoxy, C.sub.6 -C.sub.9 aryloxy or phenyl optionally substituted by C.sub.1 -C.sub.6 alkyl, and salts, esters, and amides which are intermediates to anti-allergic compounds.
本发明揭示了化合物的结构公式为##STR1##其中,R是氢原子或C.sub.1到C.sub.6的烷基,R.sub.5和R.sub.10可以相同也可以不同,是氢原子或C.sub.1到C.sub.6的烷基,X代表--AR.sub.6基团,A是CO或SO.sub.2,R.sub.6是卤素,C.sub.1-C.sub.6卤代烷基,C.sub.1-C.sub.6烷氧基,C.sub.6-C.sub.9芳氧基或苯环,可选择用C.sub.1-C.sub.6烷基取代的苯环,以及用于制备抗过敏化合物的盐,酯和酰胺等中间体。