A process of preparation of O-Desmethyl tramadol through potassium hydroxide mediated demethylation of Tramadol under phase transfer conditions.

A process of preparation of O-Desmethyl tramadol through potassium hydroxide mediated demethylation of Tramadol under phase transfer conditions.

A process of preparation of O-Desmethyl tramadol through potassium hydroxide mediated demethylation of Tramadol under phase transfer conditions.

Metabolism-resistant fenfluramine analogs are provided. The subject fenfluramine analogs find use in the treatment of a variety of diseases. For example, methods of treating epilepsy by administering a fenfluramine analog to a subject in need thereof are provided. Also provided are methods of suppressing appetite in a subject in need thereof. Pharmaceutical compositions for use in practicing the subject methods are also provided.

Metabolism-resistant fenfluramine analogs are provided. The subject fenfluramine analogs find use in the treatment of a variety of diseases. For example, methods of treating epilepsy by administering a fenfluramine analog to a subject in need thereof are provided. Also provided are methods of suppressing appetite in a subject in need thereof. Pharmaceutical compositions for use in practicing the subject methods are also provided.

Chemical syntheses and medical uses of novel inhibitors of the uptake of monoamine neurotransmitters and pharmaceutically acceptable salts and prodrugs thereof, for the treatment and/or management of psychotropic disorders, anxiety disorder, generalized anxiety disorder, depression, post-traumatic stress disorder, obsessive-compulsive disorder, panic disorder, hot flashes, senile dementia, migraine, hepatopulmonary syndrome, chronic pain, nociceptive pain, neuropathic pain, painful diabetic retinopathy, bipolar depression, obstructive sleep apnea, psychiatric disorders, premenstrual dysphoric disorder, social phobia, social anxiety disorder, urinary incontinence, anorexia, bulimia nervosa, obesity, ischemia, head injury, calcium overload in brain cells, drug dependence, attention deficit hyperactivity disorder, fibromyalgia, irritable bowel syndrome, and/or premature ejaculation are described.

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Chemical syntheses and medical uses of novel inhibitors of the uptake of monoamine neurotransmitters and pharmaceutically acceptable salts and prodrugs thereof, for the treatment and/or management of psychotropic disorders, anxiety disorder, generalized anxiety disorder, depression, post-traumatic stress disorder, obsessive-compulsive disorder, panic disorder, hot flashes, senile dementia, migraine, hepatopulmonary syndrome, chronic pain, nociceptive pain, neuropathic pain, painful diabetic retinopathy, bipolar depression, obstructive sleep apnea, psychiatric disorders, premenstrual dysphoric disorder, social phobia, social anxiety disorder, urinary incontinence, anorexia, bulimia nervosa, obesity, ischemia, head injury, calcium overload in brain cells, drug dependence, attention deficit hyperactivity disorder, fibromyalgia, irritable bowel syndrome, and/or premature ejaculation are described.

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Disclosed is a crystal form of dezocine. The X-ray powder diffraction (XRD) pattern thereof is determined using Cu/K-1 and has diffraction peaks at the 2 value of 9.10.2 and 12.20.2, with the height % of these diffraction peaks greater than 20. Also disclosed are a preparation method for the crystal form, a pharmaceutical composition and use thereof. The crystal form of dezocine has good solubility, the preparation method has simple operations, good reproducibility, suitability for industrial production and the like.

Disclosed is a crystal form of dezocine. The X-ray powder diffraction (XRD) pattern thereof is determined using Cu/K-1 and has diffraction peaks at the 2 value of 9.10.2 and 12.20.2, with the height % of these diffraction peaks greater than 20. Also disclosed are a preparation method for the crystal form, a pharmaceutical composition and use thereof. The crystal form of dezocine has good solubility, the preparation method has simple operations, good reproducibility, suitability for industrial production and the like.

The present invention relates to the technical field of medicine, in particular to a conjugate of dezocine and polyethylene glycol and a pharmaceutical composition thereof. The conjugate of dezocine and water-soluble oligomer provided by the present invention has better pharmacokinetic properties and a high drug absorption degree, may reduce the side effects of the drug, and achieve a smaller administration dosage and a more diverse mode of administration, such as oral administration, in clinic. Compared with dezocine, the conjugate of the present invention has a stronger analgesic effect and a longer analgesic duration, may reduce the frequency of drug administration, improve patient compliance, and has advantages in effectiveness and safety of the drug, as well as drug tolerance, etc.