申请人:The Boots Co. PLC
公开号:US05079264A1
公开(公告)日:1992-01-07
A process to prepare compounds of formula I ##STR1## in which n=0, 1 or 2 comprising the cyclization of compounds of formula II ##STR2## in which n=0, 1 or 2. The cyclization may be effected in the presence of an organic or inorganic base or thermally at a temperature in the range 40.degree.-160.degree. C. Compounds of formula II and certain analogues thereof are disclosed as cardiovascular agents.
一种制备化合物I的过程,其中n = 0、1或2,包括将化合物II环化的步骤,其中n = 0、1或2。环化可以在有机或无机碱的存在下或在40℃-160℃的温度范围内热化学反应。公开了化合物II及其某些类似物作为心血管药剂。