Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Ester doai
Reexamination Certificate
2001-04-04
2003-11-18
Raymond, Richard L. (Department: 1624)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Ester doai
C514S562000, C514S563000, C560S012000, C560S018000, C560S036000, C560S045000, C560S048000, C562S430000, C562S432000, C562S441000, C562S455000, C562S457000
Reexamination Certificate
active
06649656
ABSTRACT:
TECHNICAL FIELD
The present invention relates to a new anthranilic acid derivative expressed by the formula (1) or the formula (2), its pharmacologically permissible salts or solvated products (which may be collectively called as “the anthranilic acid derivative of the present invention” hereinafter), a pharmaceutical composition composed thereof and a preventive and/or therapeutic agent composed thereof. More particularly, it relates to a new anthranilic acid derivative having benzene skeleton or pyridine skeleton on the principal anthranilic acid skeleton and further having a benzene skeleton or a naphthalene skeleton substituted by a side chain containing hetero-atom, i.e. a derivative having three aromatic groups at the same time, its pharmacologically permissible salt or solvated product, a pharmaceutical composition composed thereof and a preventive and/or therapeutic agent composed thereof.
Further, the anthranilic acid derivative of the present invention is a compound clinically applicable as a carcinostatic agent owing to its strong cytotoxic action and also clinically applicable as a preventive and/or therapeutic agent for allergic diseases owing to its activity to suppress the formation of IgE antibody.
BACKGROUND ARTS
Examples of the compound having naphthalene skeleton and anthranilic acid skeleton at the same time are those disclosed in the specification of JP-A 1-287066 (hereinunder, JP-A means “Japanese Unexamined Patent Application”). The specification describes compounds such as N-(2-naphthoyl)anthranylbenzoic acid and shows that these compounds have antiallergic activity or 5-lipoxygenase inhibiting activity. However, these compounds consist of a bicyclic aromatic ring derivative substituted by hydroxyl group or alkoxy group and directly bonded to an anthranilic acid skeleton through an amide bond, and there is no description or suggestion in the specification whether these compounds have cytotoxic action or IgE antibody production suppressing action or not.
Compounds having naphthalene skeleton and anthranilic acid skeleton and exhibiting antiallergic activity and IgE antibody production suppressing activity are described in the specifications of JP-A 1-106818, International Application WO90/12001 and JP-A 7-285858. However, these compounds are different from the compound of the present invention because there is no compound having a principal skeleton containing three aromatic rings at the same time in these compounds.
International Application WO95/32943 and a document “Journal of Medicinal Chemistry (J.Med.Chem.) vol.40, No.4, sections 395-407 (1997)” describe compounds having naphthalene skeleton and anthranilic acid skeleton and exhibiting antiallergic activity and IgE antibody production suppressing activity. Further, International Application WO97/19910 describes compounds having benzene skeleton and anthranilic acid skeleton and exhibiting antiallergic activity and IgE antibody production suppressing activity. However, these compounds are also different from the compound of the present invention because the substituent corresponding to the side chain of benzene skeleton or naphthalene skeleton is limited to alkoxy groups, alkenyloxy groups or aralkyloxy groups. Furthermore, the specification merely describes the presence of antiallergic activity and IgE antibody production suppressing activity in these compounds having the above specific substituents.
Compounds having pyridine ring skeleton and anthranilic acid skeleton and exhibiting antibacterial activity are described in the specification of International Application WO95/25723. The specification further describes that the substituent of the pyridine ring includes phenyloxy group and phenylthio group which may have substituents. However, there is no detailed explanation on the kind of the substituents. In the compounds of the present invention, for example, the pyridine ring is always substituted by phenyloxy group, phenylthio group, phenylsulfonyl group, phenylsulfinyl group, phenylcarbonyl group, phenylmethyl group, naphthyloxy group, naphthylthio group, naphthylsulfonyl group, naphthylsulfinyl group, naphthylcarbonyl group or naphthylmethyl group and furthermore the phenyl group or the naphthyl group constitutes the mother nucleus and always substituted by alkoxy group, aryloxy group, etc., which may contain hetero-atoms and, accordingly, the compound of the present invention is different from the compounds described in the above specification. Further, there is no comment on the IgE antibody production suppressing activity in the specification.
Meanwhile, the creation of a new compound having strong cytotoxic action is extremely important in the development of an excellent carcinostatic agent. Since the carcinostatic activity and carcinostatic spectrum of a compound are highly dependent upon its chemical structure in general, it is highly possible to enable the development of a carcinostatic agent having excellent characteristics compared with conventional carcinostatic agents practically in use at present from a cytotoxic compound having a new structure different from the structure of known compounds.
Examples of known low-molecular compound having benzene skeleton or aryl skeleton and exhibiting cytotoxic activity are substituted phenylsulfonyl derivative (JP-A 5-9170), 2-arylquinolinol derivative (JP-A 7-33743) and benzoylacetylene derivative (JP-A 7-97350).
However, the fact that a compound having benzene skeleton or aryl skeleton together with anthranilic acid skeleton has cytotoxic activity or carcinostatic activity is utterly unknown.
The object of the present invention is to provide a new compound usable as a clinically applicable therapeutic agent for cancer and preventive and/or therapeutic agent for allergic diseases.
DISCLOSURE OF THE INVENTION
As a result of vigorous investigation performed by the inventors of the present invention to achieve the above purpose, the inventors have found the following items 1 to 16 and completed the present invention.
In the description of atomic group expressing substituent, etc., the mark “—” showing the direction of bond is described in a group supposed to have ambiguous bonding form, however, the mark may be omitted for a group having clear bonding form.
1. The anthranilic acid derivative expressed by the following formula (1) or the following formula (2) or its pharmacologically permissible salt or solvate.
<<in the formulas, Y
1
is the group of the following formula (3)-1 or (3)-2.
{in the formulas, Z is a straight-chain, branched or cyclic saturated, unsaturated or aromatic C1 to C12 hydrocarbon group substituted by one or more —NR
10
R
11
, —COOR
12
, —(C═O)NR
13
R
14
, —(C═O)R
15
or OR
16
[the C1 to C12 hydrocarbon group is optionally substituted by a substituent L (L is a C1 to C6 alkyl group, a halogen atom, —NO
2
or —CN)],
a 3 to 8-membered saturated ring containing one or plural —NR
17
—, —O— or —S— in the ring and optionally containing one or more —C(═O)— groups in the ring, a C1 to C4 straight or branched-chain saturated or unsaturated hydrocarbon group having one or two double bonds or triple bonds and optionally substituted by the above 3 to 8-membered ring, or a C5 to C10 straight or branched-chain saturated or unsaturated hydrocarbon group substituted by a monocyclic or bicyclic aromatic ring containing one or more hetero-atoms selected from oxygen, nitrogen and sulfur atom in the ring (the aromatic ring is optionally substituted by the substituent L).
the groups R
10
, R
11
, R
12
, R
13
, R
14
, R
15
, R
16
, and R
17
are each independently hydrogen atom, a straight or branched-chain C1 to C6 alkyl group which is optionally substituted, a C7 to C11 aralkyl group which is optionally substituted, a C6 to C10 aryl group which is optionally substituted (the substituent is a halogen atom, —OH, a C1 to C4 alkoxy group, —CN, —NO
2
or —COOR
18
), or a group selected from the following formulas (4)-1, (4)-2 and (4)-3. The groups R
10
and R
11
, or R
13
and R
14
may together form a 3 to 12-
Hase Naoki
Takeuchi Susumu
Takeyasu Takumi
Tsuchiya Naoki
Tsuruo Takashi
Raymond Richard L.
Teijin Limited
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