Taito Company, Ltd.

Yoshitomi Pharmaceutical Industries, Ltd.

Takeshi Ikumoto

Osamu Yamamoto

Tetsuro Shingu

Yoshio Takeda

Hidetoshi Okuyama

Shigeo Sasaki

Tetsuro Fujita

Ryousuke Touyama

Hiroyuki Inouye

Kenji Chiba

Hiroyuki Inoue

Yukio Hoshino

Takeki Okumoto

Chiba Kenji

Ryosuke Toyama

Immunosuppressant

There are disclosed 2-aminopentanoic acid compounds represented by the formula ##STR1## wherein R is as defined in the specification, their optical isomers, their pharmacologically acceptable salts and their use as an immunosuppressant.

2-aminopentanoic acid compounds and their use as immunosuppressants

Novel nitrogen-containing monoterpene derivatives having pyrindine skeleton and dimers, trimers and higher polymers thereof as low toxic and efficient dyestuffs. Their pharmacological effects are expected.

Novel nitrogen-containing monoterpene derivatives

PCT No. PCT/JP78/00054 PCT Filed Dec. 14, 1978 Sec. 371 Date Aug. 9, 1979 Sec. 102(e) Date Aug. 9, 1979 PCT Pub. No. WO79/00394 PCT Pub. Date Jul. 12, 1979. Novel reddish coloring compounds of varying hue and the method for its production, obtained by reaction between iridoid compounds contained in biological substances, where if necessary, by pretreatment with chemical or enzymic means to form --COOH at the C-4 position, and in the case of glycosides by hydrolysis of iridoid compounds to aglycones with chemical or microbial or enzymic means, and a substance possessing a primary amino group under acidic condition.

Red coloring composite and the method for its production

Novel nitrogen-containing monoterpene derivatives having pyrindine skeleton synthesized by, for example, substitution of an oxygen atom in an iridoid skeleton for a nitrogen atom as low toxic and efficient dyestuffs. Their pharmacological effects are expected.

Nitrogen-containing monoterpene derivatives

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Kobe, Japan

Takeshi Ikumoto