The present application relates generally to novel aminosterol compounds, compositions comprising the same, and methods of making and using the novel aminosterol compounds and compositions.

The present invention relates to salts of budesonide 21-phosphate with β2 adrenergic agonists, preferably with formoterol, pharmaceutical compositions containing the same and the use thereof in the treatment of respiratory inflammatory pathologies, obstructive pathologies and allergen-induced airway dysfunctions. The invention further relates to the process for preparing said salts.

Described herein are protein steroid conjugates that are useful, for example, for the target-specific delivery of glucocorticoids (GCs) to cells.

The invention relates to brassinosteroid-derived cholestane derivatives, their use in the protection of cell damage, injury and cell death and compositions containing these derivatives. New generation of compounds possess also selective antineurodegenerative properties on neuronal cells and tissues and can be particularly used in the treatment and prophylaxis of neurodegenerative disease, particularly in the treatment and prophylaxis of Parkinson's disease.

Described herein protein drug conjugates and compositions thereof that are useful, for example, for the target-specific delivery of drugs to cells. By administering these compounds, compositions, and conjugates as described herein to specific target cells, side-effects due to non-specific binding phenomena, for example, to non-target cells are reduced. In certain embodiments, compounds, compositions, and conjugates are provided, which include hydrophilic residues in linker-payloads and protein conjugates thereof.

Described herein are protein steroid conjugates that are useful, for example, for the target-specific delivery of glucocorticoids (GCs) to cells.

A compound and pharmaceutically acceptable salts thereof for treating cancer, having a structure represented by the following formula (I) or formula (II): ##STR00001##
in which X and Y each individually represent: ##STR00002## R.sub.1, R.sub.2, R.sub.3, R.sub.4, and R.sub.5 individually represents hydrogen atom, acyl having 20 or less carbon atoms, alkyl having 20 or less carbon atoms, alkanoyl having 20 or less carbon atoms, aroyl having 20 or less carbon atoms, aryl having 20 or less carbon atoms, aralkyl having 20 or less carbon atoms, sulfonyl having 20 or less carbon atoms, phosphonyl having 20 or less carbon atoms, or haloacyl having 20 or less carbon atoms.

Described herein are protein steroid conjugates that are useful, for example, for the target-specific delivery of glucocorticoids (GCs) to cells.

A compound and pharmaceutically acceptable salts thereof for treating cancer, having a structure represented by the following formula (I) or formula (II):

##STR00001##

in which X and Y each individually represent:

##STR00002## R.sub.1, R.sub.2, R.sub.3, R.sub.4, and R.sub.5 individually represents hydrogen atom, acyl having 20 or less carbon atoms, alkyl having 20 or less carbon atoms, alkanoyl having 20 or less carbon atoms, aroyl having 20 or less carbon atoms, aryl having 20 or less carbon atoms, aralkyl having 20 or less carbon atoms, sulfonyl having 20 or less carbon atoms, phosphonyl having 20 or less carbon atoms, or haloacyl having 20 or less carbon atoms.

A compound and pharmaceutically acceptable salts thereof for treating cancer, having a structure represented by the following formula (I) or formula (II): ##STR00001##
in which X and Y each individually represent: ##STR00002## R.sub.1, R.sub.2, R.sub.3, R.sub.4, and R.sub.5 individually represents hydrogen atom, acyl having 20 or less carbon atoms, alkyl having 20 or less carbon atoms, alkanoyl having 20 or less carbon atoms, aroyl having 20 or less carbon atoms, aryl having 20 or less carbon atoms, aralkyl having 20 or less carbon atoms, sulfonyl having 20 or less carbon atoms, phosphonyl having 20 or less carbon atoms, or haloacyl having 20 or less carbon atoms.