摘要 |
Compounds of Formula I <IMAGE> wherein the bond is a single bond or a double bond, X is hydrogen, flourine, chlorine, or bromine, R1 is formyl, alkanoyl or alkoxyalkyl each of which contains 2-8 carbon atoms, or benzoyl, and Y is chlorine, hydroxy, formyl, alkanoyloxy of 2-8 carbon atoms, or benzoyloxy, have valuable anti-inflammatory properties. |