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Novel compounds as respiratory stimulants for treatment of breathing control disorders or diseases

a technology of breathing control and compounds, applied in the direction of respirators, drug compositions, extracellular fluid disorders, etc., can solve the problems of severe cardiovascular consequences, hypoxia (and the associated oxidative stress), and no breathing periods

Inactive Publication Date: 2016-09-08
GALLEON PHARMA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes a method for treating breathing control disorders such as respiratory depression, sleep apnea, and chronic obstructive pulmonary disease (COPD) using a composition containing at least one additional compound. The additional compound can be selected from a group of compounds such as acetazolamide, almitrine, theophylline, caffeine, methyl propylamine, and benzyl oxime. The composition can be administered through various routes such as inhalation, topical, oral, buccal, rectal, vaginal, or intramuscular injection. The method can also involve using a mechanical ventilation device or positive airway pressure device on the subject. The patent text provides a detailed description of the technical effects of the invention and its potential to treat breathing control disorders.

Problems solved by technology

Conversely, low CO2 levels can result in periods of apnea (no breathing) since the stimulation to breathe is absent.
Key factors that contribute to these apneas include decrease in CO2 receptor sensitivity, decrease in hypoxic ventilatory response sensitivity (e.g., decreased response to low oxygen levels) and loss of“wakefulness.” Normal breathing rhythm is disturbed by apnea events, resulting in hypoxia (and the associated oxidative stress) and eventually severe cardiovascular consequences (high blood pressure, stroke, heart attack).
The upper airway muscles lose their tone resulting in the sounds associated with snoring but also inefficient airflow, which may result in hypoxia.

Method used

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  • Novel compounds as respiratory stimulants for treatment of breathing control disorders or diseases
  • Novel compounds as respiratory stimulants for treatment of breathing control disorders or diseases
  • Novel compounds as respiratory stimulants for treatment of breathing control disorders or diseases

Examples

Experimental program
Comparison scheme
Effect test

example 1

N-(4,6-Bis-methylamino-[1,3,5]triazin-2-yl)-N,O-dimethyl-hydroxylamine hydrochloride (XX)

[0245]

2-Chloro-N-(4,6-bis-methylamino)-[1,3,5]triazine (XIX)

[0246]2,4,6-Trichloro-1,3,5-triazine (XVIII) (5.0 g, 27 mmol) was dissolved in acetone (35 mL) and poured into ice-water (50 mL) to form a very fine suspension. A solution of N-methylamine hydrochloride (3.66 g, 54 mmol) in water (20 mL) was added and the temperature maintained at approximately 0° C. To this mixture, 2N NaOH (54 mL, 108 mmol) was added in a dropwise manner to keep the temperature between 0° C. and 5° C. The mixture was stirred 30 min at ambient temperature for an additional 60 min at 50° C. The precipitate was filtered and washed with water (3×25 mL). After drying over anhydrous calcium chloride under high vacuum, 2-chloro-N-(4,6-bis-methylamino)-[1,3,5]triazine (XIX) was isolated as a white powder (4.2 g, 89% yield). LCMS (ESI) m / z=174 (M+H)+.

N-(4,6-Bis-methylamino-[1,3,5]triazin-2-yl)-N,O-dimethyl-hydroxylamine hydroc...

example 2

N-(4,6-Bis-ethylamino-[1,3,5]triazin-2-yl)-N,O-dimethyl-hydroxylamine hydrochloride (XXII)

[0248]

2-Chloro-N-(4,6-bis-ethylamino)-[1,3,5]triazine (XXI)

[0249]2,4,6-Trichloro-1,3,5-triazine (XVIII) (5.0 g, 27 mmol) was dissolved in acetone (35 mL) and poured into ice-water (50 mL) to form a very fine suspension. A solution of ethylamine (2.43 g, 54 mmol) in water (20 mL) was added and the temperature maintained at approximately 0° C. To this mixture, 2N NaOH (27 mL, 54 mmol) was added in a dropwise manner to keep the temperature between 0° C. and 5° C. The mixture was stirred for 30 min at ambient temperature, and for additional 60 min at 50° C. The precipitate was filtered off, washed with water (3×25 mL). After drying over anhydrous calcium chloride under high vacuum, 2-chloro-N-(4, 6-bis-ethylamino)-[1,3,5]triazine (XXI) was isolated as a white powder (5.0 g, 92% yield). LCMS (ESI) m / z=202 (M+H)+.

N-(4,6-Bis-ethylamino-[1,3,5]triazin-2-yl)-N,O-dimethyl-hydroxylamine hydrochloride (XXI...

example 3

N-(4-Cyclopropylmethylamino)-N-(6-n-propylamino) [1,3,5]triazin-2-yl)-N,O-dimethyl-hydroxylamine (XXV)

[0251]

2, 4-Dichloro-N-(6-n-propylamino)-[1,3,5]triazine (XXIII)

[0252]2,4,6-Trichloro-1,3,5-triazine (XVIII) (20 g, 109 mmol) was dissolved in acetone (100 mL) and poured into ice-water (50 mL) to form a very fine suspension. A solution of propan-1-amine (7.1 g, 120 mmol) in water (20 mL) was added and the temperature maintained at approximately 0° C. To this mixture, 2N NaOH (60 mL, 120 mmol) was added in a dropwise manner to keep the temperature between −5° C. and 0° C. The mixture was stirred at 0° C. for 60 min. The precipitate was filtered off and washed with water (3×25 mL). After drying over calcium chloride under high vacuum, 2,4-dichloro-N-(6-n-propylamino)-[1,3,5]triazine (XXIII) was isolated as a white powder (18 g, 80% yield). LCMS (ESI) m / z=208 (M+H)+.

2-Chloro-N-(4-cyclopropylmethyl)-N-(6-n-propylamino) [1,3,5]triazine (XXIV)

[0253]2,4-Dichloro-N-(6-n-propylamino)-[1,3,5]...

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Abstract

The present invention includes a composition comprising a compound, such as a 2,4,6-triamino-1,3,5-triazine, 2,4,6-triaminopyrimidine, 2,4-diamino-6,7-dihydro-5H-pyrrolo[2,3-d]pyrimidine or 2,4-diamino-7H-pyrrolo[2,3-d]pyrimidine, that is useful in the treatment of breathing control diseases or disorders in a subject in need thereof. The present invention also includes a method of treating a respiratory disease or disorder in a subject in need thereof, comprising administering to the subject a therapeutically effective amount of a pharmaceutical composition of the invention. The present invention further includes a method of preventing destabilizing or stabilizing breathing rhythm in a subject in need thereof, comprising administering to the subject a therapeutically effective amount of a pharmaceutical composition of the invention.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The present application is entitled to priority under 35 U.S.C. §119(e) to U.S. Provisional Patent Applications No. 61 / 417,777, filed Nov. 29, 2010, and No. 61 / 494,268, filed Jun. 7, 2011, all of which are hereby incorporated by reference in their entireties herein.BACKGROUND OF THE INVENTION[0002]Normal control of breathing is a complex process that involves the body's interpretation and response to chemical stimuli such as carbon dioxide, pH and oxygen levels in blood, tissues and the brain. Breathing control is also affected by wakefulness (i.e., whether the patient is awake or sleeping). Within the brain medulla, there is a respiratory control center that interprets the various signals that affect respiration and issues commands to the muscles that perform the work of breathing. Key muscle groups are located in the abdomen, diaphragm, pharynx and thorax. Sensors located centrally and peripherally then provide input to the brain's cent...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61K31/53C07D413/04A61K31/5355C07D409/12C07D403/12C07D401/14C07D405/14C07D498/06C07D239/50A61K31/505C07D487/04A61K31/519A61M16/04A61M16/06C07D251/66
CPCA61K31/53A61M16/06C07D413/04A61K31/5355C07D409/12C07D403/12C07D401/14C07D405/14C07D498/06C07D239/50A61K31/505C07D487/04A61K31/519A61M16/0465C07D251/66A61K31/522A61K31/57A61K45/06A61P7/00A61P7/06A61P11/00A61P11/16A61P43/00C07D405/12C07D251/54
Inventor DAX, SCOTT L.WOODWARD, RICHARDPENG, SEAN
Owner GALLEON PHARMA INC
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