101 results about "Modafinil" patented technology

Pharmaceutical compositions comprising modafinil in the form of particles of defined size. The particle size of modafinil can have a significant effect on the potency and safety profile of the drug.

Compositions and methods for the treatment of sleep related breathing disorders are provided. Compositions include mirtazapine in combination with other active pharmaceutical ingredients, such as zonisamide, topiramate or modafinil. The treated sleep related breathing disorders include sleep apnea and sleep hypopnea. In some embodiments, the pharmaceutical compounds are used as adjuvant therapy with positive airway pressure (PAP) therapy, thereby lowering the pressure required to maintain airway patency during PAP therapy.

Pharmaceutical compositions comprising at least one alpha2-adrenergic agonist or baclofen and at least one alpha1-adrenergic agonist are disclosed. Pharmaceutical compositions comprising tizanidine and modafinil are disclosed. Methods for reducing somnolence, sleepiness, lethargy, dizziness, drowsiness, somnolence, tiredness, lightheadedness, increased weakness, confusion, unsteadiness, clumsiness, or a combination of the symptoms thereof in a human patient; treating pain; and attenuating muscle spasticity, using pharmaceutical compositions comprising at least one alpha2-adrenergic agonist or baclofen and at least one alpha1-adrenergic agonist are disclosed.

Compositions and methods for the treatment of sleep related breathing disorders are provided. Compositions include setiptiline in combination with other active pharmaceutical ingredients, such as zonisamide, topiramate or modafinil. The treated sleep related breathing disorders include sleep apnea and sleep hypopnea. In some embodiments, the pharmaceutical compounds are used as adjuvant therapy with positive airway pressure (PAP) therapy, thereby lowering the pressure required to maintain airway patency during PAP therapy.

Co-crystals and solvates of racemic, enantiomerically pure, and enantiomerically mixed modafinil are formed and several important physical properties are modulated. The solubility, dissolution, bioavailability, dose response, and stability of modafinil can be modulated to improve efficacy in pharmaceutical compositions.

The present invention provides an improved process for preparing modafinil, whereby it may be isolated in high purity by a single crystallization. The process produces modafinil free of sulphone products of over-oxidation and other byproducts. The invention further provides new crystalline Forms II-VI of modafinil and processes for preparing them. Each of the new forms is differentiated by a unique powder X-ray diffraction pattern. The invention further provides pharmaceutical compositions containing novel modafinil Forms II-IV and VI.

Compositions are described that comprise a modafÊnil component that is a combination of the d- and l-enantiomers of modafinil and wherein the modafÊnil component is greater than 50% by weight d-modafÊnil for use in promoting or enhancing the state of wakefulness, alertness, and/or central nervous system stimulation in an individual.

Pharmaceutical compositions comprising modafinil. The pharmaceutical compositions can have a release profile which is different than that of traditional pharmaceutical compositions of modafinil.

The present invention is directed to a process for the isolation of the enantiomeric forms of modafinil with high enantiomeric purity and high overall yields by means of a continuous chromatographic process.

Modified release formulations comprising at least one of modafinil and sildenafil, and combinations thereof, and a time-controlled delivery system coating.

Polymorphs and solvates of racemic, enantiomerically pure, and enantiomerically mixed modafinil are formed and discussed. In addition, said forms are described as useful for the treatment of many conditions including, but not limited to, narcolepsy.

Mixtures of a modafinil compound with a cyclodextrin, methods for their use, and compositions thereof are disclosed, along with complexes comprising a modafinil compound and a cyclodextrin which are taste-masked and suitable for oral consumption in an aqueous solution.

The present invention provides novel methods for the synthesis of racemic and enantiomers of modafinil via microbial oxidation-amidation transformation. The methods include the successive oxidation-amidation of benzhydrylsulfanyl carboxylic acid to produce racemic and enantiomers of modafinil using at least one microorganism of yeast, bacteria, or fungus. Also disclosed are pharmaceutical compositions of racemic and enantiomers of modafinil along with their use in the treatment of diseases, including attention deficit hyperactivity disorder and drug addiction.

The invention relates to a method for preparing a sulphoxide compound of formula (I) either as a single enantiomer or in an enantiomerically enriched form, comprising the steps of: a) contacting a pro-chiral sulphide of formula (II) with a metal chiral complex, a base and an oxidizing agent in an organic solvent; and optionally

b) isolating the obtained sulphoxide of formula (I);

wherein n, Y, R₁, R_1a, R₂ and R_2a are as defined herein.

The present invention discloses new process of synthesizing Modafinil, or 2-(diphenylmethyl sulfinyl) acetamide. The process includes the reaction of diphenyl methane as main material and bromine to obtain the intermediate diphenyl bromomethane, further condensation with mercapto acetic acid to obtain the intermediate diphenyl methylthio acetic acid, acyl chlorination to obtain the intermediate diphenyl methylthio acetyl chloride, amidation to obtain the intermediate diphenyl methylthio acetamide, and final sulfur-oxidation to obtain ultimate product Modafinil. The synthesis process of the present invention has facile material, mild reaction condition, relatively simple preparation and purification, and high product yield and quality, and is suitable for industrial production.

The invention relates to a method for preparing a sulphoxide compound of formula (I) either as a single enantiomer or in an enantiomerically enriched form, comprising the steps of: a) contacting a pro-chiral sulphide of formula (II) with a metal chiral complex, a base and an oxidizing agent in an organic solvent; and optionally

b) isolating the obtained sulphoxide of formula (I).

• • wherein n, Y, R₁, R_1a, R₂ and R_2a are as defined in claim 1.