Daiichi Pharmaceutical Co., Ltd.

Ps4 Luxco S.a.r.l.

Kouji Sato

Tsutomu Yagi

Akihiro Imura

Yoshihiro Takayanagi

Keiji Nakayama

Katsuhiko Okano

Mikihiro Itoh

Yukinari Kobayashi

Tomoyuki Nagai

Satoshi Isa

Hiromasa Takeda

Yutaka Kitagawa

Shigeru Ichikawa

Kazuo Kubota

A semiconductor device comprises a substrate, pluralities of first and second external electrodes formed in two end portions of one surface of the substrate, a first semiconductor chip mounted on the other surface of the substrate, the first semiconductor chip having an electrode pad row formed in one end portion of one surface of the first semiconductor chip and electrically connected to the first external electrodes, the first semiconductor chip being disposed so that the one end portion of the first semiconductor chip is positioned on an end portion on which the first external electrodes of the substrate are formed, and a second semiconductor chip mounted on the first semiconductor chip, the second semiconductor chip having an electrode pad row formed in one end portion of one surface of the second semiconductor chip and electrically connected to the second external electrode, the second semiconductor chip being disposed so that the one end portion of the second semiconductor chip is positioned on an end portion on which the second external electrodes of the substrate are formed.

Semiconductor device with respective electrode pad rows and respective external electrodes electrically connected and arranged in the respective end portions of the substrate

Treatment of a lactic acid ester derivative with an enzyme or the like, which has asymmetric ester-hydrolyzing ability, can specifically hydrolyze the ester moiety of an isomer existing as the pair to the racemic derivative. Use of the compound obtained by this hydrolysis makes it possible to produce an optically active propoxyaniline derivative by a shorter process than the conventional art 

Process for preparation of optically active propoxyaniline derivatives

Processes for producing antibacterial agents and intermediates useful in producing antibacterial agents are provided and include producing compound (VI-a) in accordance with the following reaction schema, as well as production intermediates thereof 

Process for producing benzoxazine derivative and production intermediate thereof

A process for producing a compound represented by the following formula (II) which comprises treating a compound represented by the following formula (I) (wherein R, Rand Rrepresent each a specific substituent) with an enzyme capable of asymmetrically hydrolyzing an ester and the novel compound (II). The process of the present invention makes it possible to easily obtain an optically active 2-azetidinone derivative in a large amount at a low cost 

Method for producing 2-azetidinone derivative

Processes for producing antibacterial agents and intermediates useful in producing antibacterial agents are provided and include producing compound (VI-a) in accordance with the following reaction schema, as well as production intermediates thereof.

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Edogawa-ku, Japan

Kouji Sato