Oxathiane derivatives of formula ##STR1## in which R represents alkyl and A represents optionally substituted phenyl or a heteroaromatic group containing 1 or 2 nitrogen atoms optionally substituted by alkyl, alkoxy or halogen, and salts thereof possess pharmacological activity and are also useful in inhibiting head hair loss.
式子为##STR1##的Oxathiane衍
生物,其中R代表烷基,A代表可选取代的苯基或含有1或2个氮原子的杂环芳基,可选取代为烷基,烷氧基或卤素,其盐具有药理活性,同时也有助于抑制头发脱落。