Teijin Limited

Toru Minoshima

Satoshi Sugiura

Atsuo Hazato

Yoshinori Kato

Kenichiro Kataoka

Hiroko Tanaka

Noriaki Endo

Seizi Kurozumi

Tatsuki Shiota

Takaharu Tsutsumi

Masahiro Koga

Masayasu Tabe

Takuya Morita

Takahiko Hada

Yasuko Koshihara

Koji Ishii

A 5-(3-cyanophenyl)-3-formylbenzoic acid compound of the formula (IV) is prepared by reacting a 5-bromo-3-(hydroxymethyl)benzoic acid compound of the formula (I) with manganese dioxide to provide a 5-bromo-3-formylbenzoic acid compound of the formula (II), and then reacting the resultant compound of the formula (II) with 3-cyanophenylboronic acid of the formula (III) in the presence of a palladium complex.R is a H atom or a C-Calkyl group.

Process for producing 5-(3-cyanophenyl)-3-formylbenzoic acid compound

Intermediates for vitamin D and processes for the preparation thereof

Prostaglandins and processes for production thereof

7-thiaprostaglandins and method of production thereof

A 2-substituted-2-cyclopentenone compound represented by the following formula (I) and an anticancer agent and a bone formation accelerator comprising the same as an effective active ingredient: ##STR1##

2-substituted-2-cyclopentenone compound and anticancer agent and bone

A 2,3-epoxycyclopentanone represented by the formula (IV): ##STR1## wherein the variables are as defined in the specification, which is used in the preparation of a 2-substituted-2-cyclopentanone compound suitable for use as an anticancer agent and a bone formation accelerator.

Cyclopentanone/cyclopentenone derivative

2-Substituted-2-cyclopentenones represented by the formula (I): ##STR1## wherein A is a hydroxyl group or ##STR2## and B is a hydrogen atom or A and B are bonded together to form one bonding arm;

2-substituted-2-cyclopentenones

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Hino, Japan

Toru Minoshima