Takasago Perfumery Co., Ltd.

Takasago International Corporation

Lotte Co., Ltd.

Haruki Tsuruta

Toyohiko Kobayashi

Hitoshi Kondo

Susumu Akutagawa

Akio Yamaguchi

Shigeru Mitsuhashi

Toshio Yoshida

Tetsuharu Okazaki

Shinji Endoh

Hiroko Kudo

Yoshiki Okeda

Yoshifumi Yuasa

Shichigoro Tezuka

Kiyohito Sawano

Yoshinori Sato

Koichi Ogawa

Akio Tachikawa

Michio Moroe

Toshimitsu Hagiwara

Akira Nagakura

(2R,3R)-3-N-(L-aspartyl)amino-1-(1-methyl-2-norbornyl)-2-butanol and (2R,3R)-3-N-(L-aspartyl)amino-1-(3-methyl-2-norbornyl)-2-butanol as well as a sweetener comprising the same are disclosed. These compounds, which have excellent sweetness characteristics and are stable in acidic aqueous solutions, are highly useful as a sweetener in various fields.

N-(l-aspartyl)amino alcohol derivative and sweetener containing the same

A liquid crystal compound represented by formula: ##STR1## wherein R.sub.1 represents a straight chain alkyl group having from 4 to 18 carbon atoms; R.sub.2 represents a straight chain alkyl group having from 2 to 6 carbon atoms or a branched alkyl group having from 3 to 6 atoms and having a methyl group as a side chain; and m and n each represents 1 or 2, is disclosed. The liquid crystal compound of formula (I) is optically and electrically stable and exhibits fast electro-optical switching in image display.

Ferroelectric smectic liquid crystal compound and composition containing

A 1,1,4,4-tetraphenyl-1,3-butadiene derivatives represented by formula (I): ##STR1## wherein R.sub.1 represents a di-lower alkylamino group, and R.sub.2 represents a hydrogen atom or a di-lower alkylamino group, is disclosed, which has useful characteristics such as excellent static charge retention ability. An electrophotographic light-sensitive material using the foregoing derivative can satisfy the requirements, e.g., for high sensitivity, low residual potential, less light fatigue even after repeated use, and excellent durability.

1,1,4,4-tetraphenyl-1,3-butadiene derivative and electrophotographic

A perfume composition is described, which contains at least one compound of bicyclo[2,2,2]octane and bicyclo[2,2,2]octene derivatives represented by the general formula (I) ##STR1## wherein the symbols are the same as defined hereinbefore.

Perfume composition

A process for preparing a brassylic diester of the formula:

Process for preparing brassylic diester

A norbornane or norbornene derivative of the formula (I): ##STR1## wherein the bond represented by the dotted line is present or absent and n is 0 or 1, the norbornane and norbornene derivatives having a characteristic odor of sandalwood oil and useful for perfumery; and a process for the production thereof.

Norbornane and norbornene derivatives

A chewing gum base containing natural rubber, basic gum additives and a decomposition product obtained by thermally decomposing natural rubber at a temperature of 200.degree. C. to 350.degree. C. in an inert atmosphere and removing low boiling point fractions up to 160.degree. C. at a pressure of approximately 1 mm Hg.

Chewing gum base containing a thermally decomposed product of a natural

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Tokyo, Japan

Haruki Tsuruta