The present invention relates to a novel fatty acid derivative of the following formula: ##STR1## wherein R.sup.1 is acyl group, etc.; R.sup.2 is acyl(lower)alkyl; R.sup.3 is lower alkyl, etc.; R.sup.4 is hydrogen, etc.; and X is --O--, etc; and a pharmaceutically acceptable salt thereof, which is useful as a medicament; the processes for the preparation of said fatty acid derivative or a salt thereof; a pharmaceutical composition comprising said fatty acid derivative or a pharmaceutically acceptable salt thereof; etc.
本发明涉及以下结构的新型
脂肪酸衍
生物:其中R.sup.1是酰基,等等;R.sup.2是酰(较低)烷基;R.sup.3是较低烷基,等等;R.sup.4是氢,等等;X是--O--,等等;以及其药学上可接受的盐,其作为药物有用;制备所述
脂肪酸衍
生物或其盐的方法;包含所述
脂肪酸衍
生物或其药学上可接受的盐的药物组合物;等等。