The present disclosure relates to stereodefined polycyclic (e.g., tetracyclic) compounds that contain quaternary centers at one or multiple ring fusions, synthetic methods for preparing such compounds, and methods of using such compounds to treat a disease, such as a brain tumor and, particularly, a glioma.

Synthetic methods for preparing deoxycholic acid and intermediates thereof are provided.

Provided herein are 3,3-disubstituted 19-nor-steroidal compounds according to Formula (I):

##STR00001##

and pharmaceutical compositions thereof. 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, 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, tinnitus, status epilepticus.

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 relates to compounds which are intermediates in the synthesis of bile acid derivatives with pharmacological activity. The invention relates to compounds of general formula (I): ##STR00001##
wherein:
, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 and Y are as defined herein. The compounds are intermediates in the synthesis of synthetic bile acids which are useful in the treatment of conditions such as liver disease. In addition, the invention relates to a method of synthesizing these intermediates and a method of preparing obeticholic acid and obeticholic acid analogues from the compounds of the invention.

Provided herein are compounds of Formula (I-I): and pharmaceutically acceptable alts thereof; wherein p, R.sup.1, R.sup.3a, R.sup.2a, R.sup.11a, R.sup.11b, R.sup.6a, and R.sup.6b are defined herein. Also provided herein are pharmaceutical compositions comprising a compound of Formula (I-X) and methods of using the compounds, e.g., in the treatment of CNS-related disorders.

##STR00001##

Disclosed are compounds that accumulate in Gram-negative bacteria. Also disclosed are method of antimicrobial treatment using the compounds.

Described herein are neuroactive steroids of the Formula (I): or a pharmaceutically acceptable salt thereof; wherein -------, R.sup.1, R.sup.2, R.sup.5, A and L 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##

Described herein are neuroactive steroids of the Formula (I):

##STR00001##

or a pharmaceutically acceptable salt thereof; wherein , R.sup.1, R.sup.2a, R.sup.2b, R.sup.3 and A 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.

Compounds are provided according to Formula (I):

##STR00001##

and pharmaceutically acceptable salts thereof, and pharmaceutical compositions thereof; wherein X, Y, R.sup.1, R.sup.2a, R.sup.2b, R.sup.4a, R.sup.4b, R.sup.5a, R.sup.5b, R.sup.6a, R.sup.6b, R.sup.7, and R.sup.8 are as defined herein. Compounds of the present invention are contemplated useful for the prevention and treatment of a variety of conditions.