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Heteroannelated anthraquinone derivatives and the synthesis method thereof




Title: Heteroannelated anthraquinone derivatives and the synthesis method thereof.
Abstract: wherein R1 is a substituent being one selected from a group consisting of i) a first substituent being one selected from a group consisting of a hydryl group, an amino group, a nitro group, a hydroxyl group and a cyan group, ii) a second substituent being one selected from a group consisting of (CH2)nX, a straight (CH2)n alkyl group, a (CH2)n alkoxyl group, a branched (CH2)n alkyl group, a C3˜C12nephthenic group, and a C3˜C12 cyclic alkoxyl group, wherein 1=n=12, and X is a halogen, iii) a third substituent being one selected from a group consisting of a straight C1˜C8 alkyl group with a double-bond, a C1˜C8 alkoxyl group with a double-bond, a branched C1˜C8 alkyl group with a double-bond and a C3˜C8 nephthenic group with a double-bond, and iv) a fourth substituent of a C5˜C12 heterocyclic group. A heteroannelated anthraquinone derivative compound is provided. The heteroannelated anthraquinone derivative compound is represented by a formula (I): ...


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USPTO Applicaton #: #20090253707
Inventors: Hsu-shan Huang


The Patent Description & Claims data below is from USPTO Patent Application 20090253707, Heteroannelated anthraquinone derivatives and the synthesis method thereof.

FIELD OF THE INVENTION

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The present invention relates to heteroannelated anthraquinone derivatives for inhibiting a proliferation activity of a cancer cell, and more particularly to a series of heteroannelated anthraquinone derivatives and the synthesis method thereof.

BACKGROUND

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OF THE INVENTION

In normal somatic cells, the telomere, which is located at the end of a chromosome, gets shortened at each time of cell mitosis. When the telomere is shortened to some level, the cell will lose the ability of replication and go into apoptosis stage. Telomerase, which is a ribonucleoprotein, acts on the telomere in a eukaryocyte, so as to prolong or maintain the length of the telomere. A telomerase mainly includes two portions; one is a protein sub-unit with activity of reverse transcription, i.e. the human telomerase reverse transcriptase (hTERT), and the other one is an RNA template for synthesizing repeated sequences of the telomerase, i.e. the human telomerase RNA component (hTR), wherein the RNA template includes the single RNA sequence, -AAUCCC, which is complementary to the telomerase sequence. Telomerase activity is rarely detected in normal human somatic cells, but is usually detected in the cells that keep proliferating, such as hematopoietic cells, embryogenic cells, stem cells, etc. It is estimated that about 85-90% of human tumor cells have telomerase activity, and that is the reason why tumor cells do not go into apoptosis like a normal cell and can keep proliferating (Urquidi et al., Annu. Rev. Med. 2000, 51, 65-79). Reductions in hTERT mRNA expression level and telomerase activity are observed during the processes of cell going aged or immortalized (Bestilny et al., Cancer Res. 1996, 56, 3796-802). Furthermore, the telomerase activity of a somatic cell that should not express the telomerase activity could be reproduced by introduction of the hTERT cDNA thereinto for a high level expression of telomerase activity (Bodnar et al., Science. 1998, 279, 349-52).

The telomere at chromosome ends of eukaryotic cells is guanine-rich. In normal physiological conditions, the single strand DNA of the telomere spontaneously forms a G-quadruplex structure. The G-quadruplex structure includes two portions, wherein one is a small loop composed of TTA, and the other one is a guanine-tetrad composed of four guanines formed by cyclic hydrogen bonds. In order to inhibit the differentiation of tumor cells, an alternative besides the direct inhibition to telomerase activity is to stabilize the G-quadruplex structure for inhibiting its reaction with the complementary single strand RNA (AAUCCC), so as to prevent the telomerase from extending the telomere. Chromosome replications of tumor cells may be inhibited by the mentioned method, so as to achieve the anti-caner effect directly or indirectly (Smogorzewska et al., Annu. Rev. Biochem. 2004, 73, 177-208).

It is observed in current studies that anthraquinone can stabilize the G-quadruplex structure for its formula with plane tri-cyclic structure. According to the researches to the quindoline derivatives (10H-indolo[3,2-b]quinoline) with tetra-cyclic structure, berberin with non-plane polycyclic structure and the analogs synthesized therefrom, it is known that the aromatic groups of the mentioned compounds play an important role in the bonding to the G-quardruplex structure. Over-expressions of known oncogenes usually induce cancers and are associated with many cell proliferation disorders, such as chronic lymphocytic leukemia, esophagus cancer, myeloma, etc. In additions, those genes also participate in many pathological and physiological processes. Many experiments have proved that over-expressions of tumor suppressor genes play important role in the prevention and treatment of tumors. Therefore, the research and development of the drugs for curing cell proliferation disorders can be applied in the cure of human cancers, just like the disclosures of Canadian Patent No. 2,428,206.

Although it has been published that a heteroannelated anthraquinone derivative can be synthesized by an acylation reaction of 1,2-diaminoanthraquinone to obtain a bis-substituent derivative, followed by a consensation reaction. However, this method only discloses the substituent of aromatic groups, and has a poor production rate (Peng et al., J. Org. Chem. 2005, 70, 10524-31).

Based on the above, the present invention provides heteroannelated anthraquinone derivatives and the synthesis method thereof, which is accomplished by preserving the chromophore group with plane tri-cyclic structure and the carbonyl groups at 9 and 10, which have better binding ability, then changing the tri-cyclic structure into tetra-cyclic structure and adding various side chains derived from different modified substituents, so as to synthesize a series of heteroannelated anthraquinone derivatives.

SUMMARY

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OF THE INVENTION

The present invention provides a series of heteroannelated anthraquinone derivatives for inhibiting the proliferation activity of cancer cells, which facilitate the study and application regarding cancer cells.

In accordance with the first aspect of the present invention, a heteroannelated anthraquinone derivative compound is provided. The compound is represented by a formula (I):

wherein R1 is a substituent being one selected from a group consisting of i) a first substituent being one selected from a group consisting of a hydryl group, an amino group, a nitro group, a hydroxyl group and a cyan group, ii) a second substituent being one selected from a group consisting of (CH2)nX, a straight (CH2)n alkyl group, a (CH2)n alkoxyl group, a branched (CH2)n alkyl group, a C3˜C12nephthenic group, and a C3˜C12 cyclic alkoxyl group, wherein 1=n=12, and X is a halogen, iii) a third substituent being one selected from a group consisting of a straight C1˜C8 alkyl group with a double-bond, a C1˜C8 alkoxyl group with a double-bond, a branched C1˜C8 alkyl group with a double-bond and a C3˜C8 nephthenic group with a double-bond, and iv) a fourth substituent of a C5˜C12 heterocyclic group, wherein one of the nephthenic group and the heterocyclic group further has at least one of an ortho-substitution, a meta-substitution and a para-substitution, and comprises at least a fifth substituent for any of the substitutions being one selected from a group consisting of an alkyl group with a C1˜-C3 substituent branch, an amino group, a nitro group, a hydroxyl group and a cyan group, a C1˜C5 alkyl group, a halogen substituted C1˜C5 alkyl group, a C1˜C5 alkoxyl group, a halogen substituted C1˜C5 alkoxyl group, a C1˜C5 cyclic alkoxyl group, and a halogen substituted C1˜C5 cyclic alkoxyl group.

Preferably, the halogen is one selected from a group consisting of a fluorine, a chlorine, a bromine and an iodine.

Preferably, the second substituent is one selected from a group consisting of a methyl group, an ethyl group, a propyl group, a butyl group, an isobutyl group, a pentyl group, an isopentyl group, a cyclopentyl group, a heptyl group, an isoheptyl group, a cycloheptyl group, an octyl group, an isooctyl group, a cyclooctyl group, a straight alkyl group with a branch substituted by a straight C1˜C5 alkyl group, a nephthenic group with a branch substituted by a straight C1˜C5 alkyl group, alkoxyl derivatives of the mentioned alkyl groups, and halogenated derivatives of the mentioned alkyl groups.

Preferably, the third substituent is one selected from a group consisting of a vinyl group, a propenyl group, a butenyl group, an isobutenyl group, a pentenyl group, an isopentenyl group, a cyclopentenyl group, a hexenyl group, a cyclohexenyl group, a heptenyl group, an cycloheptenyl group, a straight alkyl group with a branch substituted by a straight C1˜C3 alkyl group, a nephthenic group with a branch substituted by a straight C1˜C3 alkyl group, alkoxyl derivatives of the mentioned groups, and halogenated derivatives of the mentioned groups.

Preferably, the heteroannelated anthraquinone derivative compound is used as an effective component together with an excipient to provide a pharmaceutic composition for inhibiting one selected from a group consisting of a growth of a cancer cell, a disease of cell proliferation, and a growth of cell telomere.

In accordance with the second aspect of the present invention, a heteroannelated anthraquinone derivative compound is provided. The compound is represented by a formula (II):

Preferably, the heteroannelated anthraquinone derivative compound is used as an effective component together with an excipient to provide a pharmaceutic composition for inhibiting one selected from a group consisting of a growth of a cancer cell, a disease of cell proliferation, and a growth of cell telomere.

In accordance with the third aspect of the present invention, a heteroannelated anthraquinone derivative compound is provided. The compound is represented by a formula (III):

wherein either one of R2 and R3 is one of i) a first substituent being one of a hydryl group and a sulfuryl-group, and ii) a second substituent being one selected from a group consisting of a C1˜C8 alkyl group, a C1˜C8 alkoxyl group, a C3˜C8 nephthenic group, and a C3˜C8 cyclic alkoxyl group, a straight alkyl group with a branch substitutent, a nephthenic group with a branch substitutent by a straight C1˜C5 alkyl group and halogenated derivatives of the mentioned substitent groups.

Preferably, the second substituent is one selected from a group consisting of a methyl group, an ethyl group, a propyl group, a butyl group, an isobutyl group, a pentyl group, an isopentyl group, a cyclopentyl group, a heptyl group, an isoheptyl group, a cycloheptyl group, an octyl group, an isooctyl group, a cyclooctyl group, a phenyl group, a benzyl group, a phenethyl group, a straight alkyl group with a branch substituted by a straight C1˜C3 alkyl group, a nephthenic group with a branch substituted by a straight C1˜C3 alkyl group, alkoxyl derivatives of the mentioned substituent groups, and halogenated derivatives of the mentioned substituent groups.

Preferably, the heteroannelated anthraquinone derivative is used as an effective component together with an excipient to provide a pharmaceutic composition for inhibiting one selected from a group consisting of a growth of a cancer cell, a disease of cell proliferation, and a growth of cell telomere.

In accordance with the fourth aspect of the present invention, a heteroannelated anthraquinone derivative compound is provided. The compound is represented by a formula (IV):




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stats Patent Info
Application #
US 20090253707 A1
Publish Date
10/08/2009
Document #
File Date
12/31/1969
USPTO Class
Other USPTO Classes
International Class
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Drawings
0


Anthraquinone

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Drug, Bio-affecting And Body Treating Compositions   Designated Organic Active Ingredient Containing (doai)   Heterocyclic Carbon Compounds Containing A Hetero Ring Having Chalcogen (i.e., O,s,se Or Te) Or Nitrogen As The Only Ring Hetero Atoms Doai   Hetero Ring Is Six-membered Consisting Of Two Nitrogens And Four Carbon Atoms (e.g., Pyridazines, Etc.)   1,4-diazine As One Of The Cyclos   At Least Three Rings In The Polycyclo Ring System  

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20091008|20090253707|heteroannelated anthraquinone derivatives and the synthesis method thereof|wherein R1 is a substituent being one selected from a group consisting of i) a first substituent being one selected from a group consisting of a hydryl group, an amino group, a nitro group, a hydroxyl group and a cyan group, ii) a second substituent being one selected from a |National-Defense-Medical-Center