A novel delivery system for drugs, and especially macromolecules such as proteins or oligonucleotides through biological membranes is provided, and specifically delivery of siRNA. The delivery system comprises conjugation of the macromolecule drug to a moiety that enables effective passage through the membranes. Respectively, novel compounds and pharmaceutical compositions are provided, utilizing said delivery system. In one aspect of the invention, the compounds may be utilized in medical practice, for example, in delivery of siRNA or antisense oligonucleotides across biological membranes for the treatment of medical disorders.

A system for delivery of drugs, and especially genetic drugs such as siRNA or antisense oligonucleotides (ASO) across biological membranes is provided. It comprises a trans-membrane delivery moiety, energized by the membrane internal electrical field, and a redox-sensitive disulfide moiety, designed to be reduced at the cytoplasm, thus releasing the cargo drug to exert its pharmaceutical effects at its target sites.

The present invention relates to the synthesis of N-trifluoromethylcarbonyl compounds starting from isothiocyanates, which can be converted into N-trifluoromethylcarbamoyl fluorides or similar compounds, which later on can be derivatized further to amides, ureas, carbamates, thiocarbamates and selenocarbamates.

The present invention relates to novel 2-Methoxyestradiol derivatives and their medical use. In particular, the novel derivatives of the present invention are useful for the treatment or prevention of liver or lung fibrosis. Accordingly, the present invention also provides medical uses of the 2-Methoxyestradiol derivatives of the present invention. The present invention also provides a method of treating or preventing liver or lung fibrosis comprising administering an effective amount of the 2-Methoxyestradiol derivatives of the present invention.

Provided are a compound including a cleavable linker, a use thereof, and an intermediate compound for preparing the same, and more particularly, the compound including a cleavable linker of the present invention may include an active agent (for example, a drug, a toxin, a ligand, a probe for detection, etc.) having a specific function or activity, a SO.sub.2 functional group which is capable of selectively releasing the active agent, and a functional group which triggers a chemical reaction, a physicochemical reaction and/or a biological reaction by external stimulation, and may further include a ligand (for example, oligopeptide, polypeptide, antibody, etc.) having binding specificity for a desired target receptor.

The present invention relates to fulvestrant prodrugs of formula II and process for the preparation thereof. The present disclosure also relates to pharmaceutical composition of fulvestrant prodrugs and method of treatment using the same.

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Provided herein are steroid sulfatase inhibitor compounds and androgen receptor inhibitor compounds that can be useful in, for example, the treatment of cancers such as prostate cancer and breast cancer. Pharmaceutical compositions and kits including the compounds are described, as well as methods for the treatment of cancer such as prostate cancer and breast cancer.

Provided are a compound including a cleavable linker, a use thereof, and an intermediate compound for preparing the same, and more particularly, the compound including a cleavable linker of the present invention may include an active agent (for example, a drug, a toxin, a ligand, a probe for detection, etc.) having a specific function or activity, a SO.sub.2 functional group which is capable of selectively releasing the active agent, and a functional group which triggers a chemical reaction, a physicochemical reaction and/or a biological reaction by external stimulation, and may further include a ligand (for example, oligopeptide, polypeptide, antibody, etc.) having binding specificity for a desired target receptor.

Methods for modulating lipoprotein lipase (LPL) and Apoliprotein C2 (ApoC2) expression and/or activity in the treatment of peripheral and central nervous system tissue disease states with C-6 substituted estradiol derivatives are presented herein.

The present invention relates to novel steroidal compounds of formula (I), process for preparation of the same and composition comprising these compounds.

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