Santen Pharmaceutical Co., Ltd.

Youichi Kawashima

Tadashi Iso

Takakazu Morita

Shiro Mita

Mitsushi Hikida

This invention relates to cyclic sulfur-containing compounds of the formula [I] and salts thereof which are useful for immunomodulator and treatment of liver diseases. ##STR1##

Cyclic sulfur-containing compounds

A pharmaceutical composition for treatment of an autoimmune disease, which comprises (i) a pharmaceutical carrier and (ii) a compound of the formula (I) or pharmaceutically acceptable salts thereof in an amount effective for treatment of an autoimmune disease, ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and each is lower alkyl; and R.sup.3 is hydrogen or lower alkyl.

Compositions and methods of use of cyclic sulfur-containing compounds

Cyclic sulfur-containing compounds of the formula ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and each is hydrogen or lower alkyl,

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Kyoto, Japan

Youichi Kawashima