US 5,237,091 A · Naphthalene derivatives

Naphthalene derivatives

AssigneeEisai Co., Ltd.

InventorsHiroyuki Yoshimura, Shinya Abe, Tetsuya Kawahara, Naoyuki Shimomura, Kazuo Okano, Richard S. J. Clark, Takashi Mori, Shuhei Miyazawa, Ryoichi Hashida, Kenzo Muramoto, Koukichi Harada, Takashi Inoue, Hiroshi Shirota, Kenichi Chiba, Kenichi Kusube, Toru Horie, Takeshi Suzuki, Isao Yamatsu

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Abstract

The present invention relates to a naphthalene derivative. More particularly, it relates to a naphthalene derivative exhibiting an excellent activity as a drug.

Claims5

Dependent claims

A compound of the formula:

##STR129## wherein R.sup.a is a benzyl group;
R.sup.b is a hydrogen atom or a lower alkyl group;
R.sup.c is a lower alkyl group;
and
R.sup.d is a hydrogen atom or a group of the formula:
##STR130## wherein R.sup.e is a hydroxyl group or a lower alkyl group.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

07/890,223Filed 29 May 1992 · division

Priority

JP 2-31106616 Nov 1990

Granted

17 Aug 1993

Term ends

Not estimatedThe source records don’t support an estimate.

Classification16 codes

C07C 255/41
Having cyano groups bound to acyclic carbon atoms of a carbon skeleton containing at least one six-membered aromatic ring: the carbon skeleton…
C07C 39/40
Halogenated derivatives: with at least one hydroxy group on a condensed ring system containing more than two rings
C07C 43/202
Having an ether-oxygen atom bound to a carbon atom of a six-membered aromatic ring: the aromatic ring being a naphthalene
C07C 43/23
Having an ether-oxygen atom bound to a carbon atom of a six-membered aromatic ring: containing hydroxy or O-metal groups