Sumitomo Chemical Company, Limited

Ryohei Komaki

Satoshi Mitsuda

Keisuke Watanabe

Yuko Kobayashi

Fumitaka Kishimoto

Kanji Nishizawa

Chiaki Sugiki

Kazumi Sonoda

Masako Sugimoto

Yasutaka Ogami

There is provided a method for improving optical purity of an amine compound of the formula I: ##STR1## wherein R.sup.1 indicates a phenyl group which may be substituted or an aralkyl group having 7 to 10 carbon atoms which may be substituted, and R.sup.2 indicates an alkyl group having 1 to 6 carbon atoms, which is characterized by contacting a cutlture of a microorganism belonging to Arthrobacter having an ability to preferentially metabolize one optical isomer based on an asymmetric carbon atom to which an amino group bonds in the amine compound of the formula I or a treated product thereof with the amine compound of the formula I.

Method for improving optical purity of an amine compound

There is provided a process for production of carane-3,4-diol which includes contacting a culture of filamentous fungus having an ability to produce carane-3,4-diol from 3-carene or 3,4-epoxycarane, cells collected from the culture or treated cells with 3-carene or 3,4-epoxycarane, then recovering the resulting carane-3,4-diol.

Process for production of carane-3,4-diol

Method for producing optically active cyclopropane carboxylic acid

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Hyogo, Japan

Ryohei Komaki