Takeda Chemical Industries, Inc.

Takeda Chemical Company, Ltd.

Eiko Imamiya

Keizo Inoue

Hiroaki Nomura

Yutaka Kawamatsu

Takahiro Saraie

Yukihiko Hamuro

Hiroshi Akimoto

A compound represented by the formula: ##STR1## wherein R represents a hydrogen atom or a lower alkyl group;

Carboxylic acid derivatives

Novel compounds having the formula: ##STR1## wherein ##STR2## represents a nitrogen-containing aromatic 6-membered ring; R.sup.1 represents a higher alkyl group which may be substituted; R.sup.2 represents a tertiary amino group or a quaternary ammonium group; and m represents 2 or 3; and salts thereof have superior antitumor activities including differentiation-inducing activity, and are useful as antitumor agents.

2-O-pyrimidinyl glycerol derivatives

.alpha.-CHLOROCARBOXYLIC ACIDS OF THE FORMULA ##STR1## wherein Y stands for a lower alkyl group having 1 to 6 carbon atoms or a phenyl group, a benzoyl group or a phenylalkyl group having 7 to 11 carbon atoms, which may have a lower alkyl group having 1 to 3 carbon atoms, a lower alkoxy group having 1 to 3 carbon atoms or a halogen on the phenyl rings as a substituent; R.sup.1 stands for a lower alkylene group having 1 to 4 carbon atoms or a valency bond; L stands for a lower alkyl group having 1 to 3 carbon atoms; and Z stands for a carboxyl group or a group convertible to carboxyl group, are useful as, for example, remedies for hyperlipemia, diabetes and so on of mammals including human beings.

.alpha.-Chlorocarboxylic acids

Compounds of the formula: ##STR1## wherein R.sup.1 represents hydrogen, lower alkyl having 1 to 5 carbon atoms, halogen, hydroxyl, lower alkoxy having 1 to 4 carbon atoms or trifluoromethyl; R.sup.2 and R.sup.3 are the same or different and each represents hydrogen or a lower alkyl having 1 to 5 carbon atoms; Y represents an alkylenethio group having 1 to 6 carbon atoms, alkyleneoxy having 1 to 6 carbon atoms, or alkylenedioxy having 1 to 6 carbon atoms; Z represents a carboxyl group or a group convertible to carboxyl and n is 1 or 2. The compounds have utility in treatment of hyperlipemia and diabetes.

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Tondabayashi, Japan

Eiko Imamiya