Teijin Limited

Mikio Ota

Kenichiro Kataoka

Tatsuki Shiota

Hisao Yamaguchi

Takumi Takeyasu

Hirofumi Tanabe

Tsutomu Mochizuki

Yasuhiro Takano

Shigehisa Kitahara

Hideki Horiuchi

Shiro Kondo

Masatoshi Kano

Protecting agent for organ or tissue

A benzopyran derivative represented by the formula (I) or its pharmaceutically acceptable salt: ##STR1## wherein either one of X and Y stands for the following formula ##STR2## and the other one of X and Y and R.sup.1 -R.sup.10 stand for various substituents, and ACAT inhibitor, anti-hyperlipidemia agent and anti-atherosclerosis agent compositions containing the same as an active ingredient.

Benzopyran derivative, process for producing the same and pharmaceutical

Pharmaceutical compositions containing a benzoxazole compound and a 2,3-dihydrobenzofuran compound represented by the following formula (I) and its pharmaceutically acceptable salt: ##STR1## In the formula, any one of P, Q, R and S is a group represented by the formula: ##STR2## and R.sub.1, R.sub.2 and the reining three substituents out of the substituents P to S each independently stand for various substituents. These compositions are used as an ATCAT inhibitor or for treating hyperlipidemia and atherosclerosis.

Benzoxa condensed ring compounds, process for producing the same and

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Hino, Japan

Mikio Ota