The invention relates to sterol esters and methods for producing purified sterols that can be utilized in methods for producing a lipid nanoparticle.

Described herein are processable compositions comprising at least one moiety that is processable in its free form. Also described herein are compositions and methods for the treatment of ocular diseases or disorders including glaucoma, blepharitis, ocular inflammation, diabetic macular edema, posterior inflammation, anterior inflammation, macular degeneration (e.g., wet macular degeneration (AMD) or dry AMD), post-cataract surgery, and retinal vein occlusion. Said compositions and methods comprise steroids and prostaglandins which demonstrate anti-inflammatory activity, intraocular pressure (IOP) lowering, and/or other desirable activities. Injection of said compositions in the eye provides therapeutic benefit to patients suffering from ocular disorders.

Compounds are provided according to Formula (A): and pharmaceutically acceptable salts thereof, and pharmaceutical compositions thereof; wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, and R.sup.G are as defined herein. Compounds of the present invention are contemplated useful for the prevention and treatment of a variety of conditions.

##STR00001##

Compounds are provided according to Formula (A): and pharmaceutically acceptable salts thereof, and pharmaceutical compositions thereof; wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, and R.sup.G are as defined herein. Compounds of the present invention are contemplated useful for the prevention and treatment of a variety of conditions.

##STR00001##

Described herein are steroids of Formula (I): ##STR00001##
and pharmaceutically acceptable salts thereof; wherein R.sup.1, R.sup.2a, R.sup.2b, R.sup.3, R.sup.4, R.sup.5a, R.sup.5b, R.sup.6, and Z are as defined herein. Such compounds are contemplated useful for the prevention and treatment of a variety of CNS-related conditions, for example, treatment of sleep disorders, mood disorders, schizophrenia spectrum disorders, convulsive disorders, disorders of memory and/or cognition, movement disorders, personality disorders, autism spectrum disorders, pain, traumatic brain injury, vascular diseases, substance abuse disorders and/or withdrawal syndromes, and tinnitus.

Described herein are steroids of Formula (I): ##STR00001##
and pharmaceutically acceptable salts thereof; wherein R.sup.1, R.sup.2a, R.sup.2b, R.sup.3, R.sup.4, R.sup.5a, R.sup.5b, R.sup.6, and Z are as defined herein. Such compounds are contemplated useful for the prevention and treatment of a variety of CNS-related conditions, for example, treatment of sleep disorders, mood disorders, schizophrenia spectrum disorders, convulsive disorders, disorders of memory and/or cognition, movement disorders, personality disorders, autism spectrum disorders, pain, traumatic brain injury, vascular diseases, substance abuse disorders and/or withdrawal syndromes, and tinnitus.

The present invention refers to a process for preparing (3α,5α)-hydroxy-3-methyl-pregnan-20-one, a compound also known as Ganaxolone, having the formula below: (I):

##STR00001##

Compounds are provided according to Formula (A): and pharmaceutically acceptable salts thereof, and pharmaceutical compositions thereof; wherein R.sup.1, R.sup.2, R.sup.3′ R.sup.4, R.sup.5, R.sup.6, and R.sup.G are as defined herein. Compounds of the present invention are contemplated useful for the prevention and treatment of a variety of conditions.

##STR00001##

Compounds are provided according to Formula (A): and pharmaceutically acceptable salts thereof, and pharmaceutical compositions thereof; wherein R.sup.1, R.sup.2, R.sup.3′ R.sup.4, R.sup.5, R.sup.6, and R.sup.G are as defined herein. Compounds of the present invention are contemplated useful for the prevention and treatment of a variety of conditions.

##STR00001##

Described herein are neuroactive steroids of the Formula (II): or a pharmaceutically acceptable salt thereof; wherein A, R.sup.1, R.sup.2a, R.sup.2b, R.sup.3a, R.sup.3b, R.sup.4a, R.sup.4b, R.sup.5, R.sup.6 and are as defined herein. Such compounds are envisioned, in certain embodiments, to behave as GABA modulators. The present invention also provides pharmaceutical compositions comprising a compound of the present invention and methods of use and treatment, e. g., such for inducing sedation and/or anesthesia.

##STR00001##