The compound of formula I ##STR1## in which R.sup.1 is alkyl; and R is alkyl, naphthyl, benzhydryl, fluorophenylmethyl, phenethyl, 1-(fluorophenyl)ethyl, 5-chloro-2-methoxyphenyl, trifluoromethoxyphenyl, trifluoromethylphenyl, methylsulfanylphenyl or pyridyl are useful for increasing blood serum HDL levels.
式子I的化合物##STR1##中,其中R.sup.1是烷基; 而R是烷基,
萘基,苯甲基,
氟苯甲基,苯乙基,1-(
氟苯基)乙基,5-
氯-2-
甲氧基苯基,
三氟甲氧基苯基,三
氟甲基苯基,甲
硫基苯基或
吡啶基,对于增加血清高密度脂蛋白
水平是有用的。