申请人:Yamamoto Chemical Industrial Co., Ltd.
公开号:US04634768A1
公开(公告)日:1987-01-06
This invention relates to derivatives of 3-methylflavone-8-carboxylic acid represented by the formula (1) ##STR1## wherein R represents a hydrogen atom, a lower alkyl group or a group ##STR2## (wherein R.sup.1 and R.sup.2 represent a lower alkyl group or R.sup.1 and R.sup.2, when taken together with the nitrogen atom to which they are attached, may form a heterocyclic ring with or without an intervening hetero atom, and n is an integer of 1 to 4), and X represents a halogen atom, which are useful as intermediates. This invention also relates to processes for preparing the same.
这项发明涉及由式(1)表示的3-甲基黄酮-8-羧酸衍生物
##STR1##
其中R代表氢原子、较低的烷基基团或基团
##STR2##
(其中R.sup.1和R.sup.2代表较低的烷基基团或R.sup.1和R.sup.2,当与它们连接的氮原子一起时,可以形成具有或不具有介入杂原子的杂环环,n为1至4的整数),X代表卤原子,这些衍生物可用作中间体。这项发明还涉及制备这些衍生物的方法。