Kinki University

Diabetym Co., Ltd.

Osamu Muraoka

Genzoh Tanabe

Masayuki Yoshikawa

Hisashi Matsuda

Ayako Kita

Reiko Sugiura

Nozomi Tsutsui

Tatsuki Kunoh

The invention is intended to provide an excellent antitumor agent. An antitumor agent contains a glycolipid glycoside compound represented by Formula (1) or a pharmacologically acceptable salt thereof as an active ingredient: in the formula, Rto Rare the same as or different from each other and represent an alkanoyl group or a hydrogen atom, and A represents a sugar alcohol residue or a polyol residue.

Antitumor agent

Provided is a novel cyclic sulfonium salt compound which is useful for the prevention or treatment of diabetes and the like. The present invention relates to a novel cyclic sulfonium salt compound represented by general formula (I) or (II), an isomer or solvate of the compound, or a pharmaceutically acceptable salt of the compound or the isomer or solvate. The present invention also relates to an &#x3b1;-glucosidase inhibitor, a pharmaceutical composition for preventing or treating diabetes, and an anti-diabetes food, each of which comprises the compound represented by general formula (I) or (II) and the like.

Cyclic sulfonium salt, process for production of same, and &#x3b1;-glucosidase inhibitor comprising same

Cyclic onium compounds reresented by the following structural formula (I), glucosidase inhibitors using such compounds, and antidiabetic drugs or food containing such glucosidase inhibitor. wherein Ais an aniom; m is an interger between 1 and 6, n is 0 or 1, Xis Sor NQ (where Q is H or an alkyl of 1 to 4 carbon atoms).

Cyclic onium compounds and glucosidase inhibitors

Growing community of inventors

Higashiosaka, Japan

Osamu Muraoka