The present invention relates to new odorous acetals which are useful as fragrance or flavor materials in particular in providing vanilla and spicy notes with a natural impression resembling vanilla absolute.

The present invention relates to new odorous acetals which are useful as fragrance or flavor materials in particular in providing vanilla and spicy notes with a natural impression resembling vanilla absolute.

Ketamine derivatives and pharmaceutical compositions thereof are disclosed. When administered orally the ketamine derivatives provide increased bioavailability of ketamine in the systemic circulation. The ketamine derivatives can be used to treat neurological diseases, psychological diseases and pain.

This invention relates to an acid labile surfactant. In particular, the surfactants of the present invention include a dioxolane or dioxane functional group which enables the surfactant to hydrolyze in an acidic environment. Surfactants of this type can be utilized to enhance protein solubilization/enzyme digestion. Following hydrolysis to destroy the surfactant (which may chromatographic issues), there are generally two components formeda hydrophilic one, and a hydrophobic one. By altering the chemistry of the hydrolysable linker, the polarity of the hydrophobic residue can be altered, allowing it to be solubilized by significantly less organic solvent, and to minimize the potential loss of peptide material and to expand the chromatographic conditions that can be utilized.

This invention relates to an acid labile surfactant. In particular, the surfactants of the present invention include a dioxolane or dioxane functional group which enables the surfactant to hydrolyze in an acidic environment. Surfactants of this type can be utilized to enhance protein solubilization/enzyme digestion. Following hydrolysis to destroy the surfactant (which may chromatographic issues), there are generally two components formeda hydrophilic one, and a hydrophobic one. By altering the chemistry of the hydrolysable linker, the polarity of the hydrophobic residue can be altered, allowing it to be solubilized by significantly less organic solvent, and to minimize the potential loss of peptide material and to expand the chromatographic conditions that can be utilized.

A polymer compound is provided which is changed from a water-insoluble state to a water-soluble state by irradiation with light. The polymer compound is represented by Formula (5), where A and B are a single bond or a functional group, R.sup.3, R.sup.4, and R.sup.9 are hydrogen or an alkyl group, and R.sup.6 and R.sup.7 are hydrogen, an alkyl group, or the like.

Disclosed herein are analogues of itraconazole that are both angiogenesis and hedgehog signaling pathway inhibitors, formulations thereof, including lipsome formulations thereof. The compounds are expected to be useful in the treatment of cell proliferation disorders such as cancer, particularly cancers that are dependent upon the hedgehog signaling pathway such as basal cell carcinoma and medulloblastoma.

A hydrophilic polymer derivative having a cyclic benzylidene acetal linker represented by the following formula (1):

##STR00001##

wherein R.sup.1 and R.sup.6 are each independently a hydrogen atom or a hydrocarbon group; R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are each independently an electron-withdrawing or electron-donating substituent or a hydrogen atom; X.sup.1 is a chemically reactive functional group; P is a hydrophilic polymer; s is 1 or 2, t is 0 or 1, and s+t is 1 or 2; w is an integer of 1 to 8; and Z.sup.1 and Z.sup.2 are each independently a selected divalent spacer.

A hydrophilic polymer derivative having a cyclic benzylidene acetal linker represented by the following formula (1):

##STR00001##

wherein R.sup.1 and R.sup.6 are each independently a hydrogen atom or a hydrocarbon group; R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are each independently an electron-withdrawing or electron-donating substituent or a hydrogen atom; X.sup.1 is a chemically reactive functional group; P is a hydrophilic polymer; s is 1 or 2, t is 0 or 1, and s+t is 1 or 2; w is an integer of 1 to 8; and Z.sup.1 and Z.sup.2 are each independently a selected divalent spacer.

A method for synthesizing halogenated organic compounds, such as halogenated alkenyl group-containing and halogenated alkyl group-containing compounds having a heteroatom (e.g., O,N.S) coupled to a carbon atom of a halogenated alkenyl or halogenated alkyl group, involves reacting a halogenated olefin such as a chloro-substituted trifluoropropenyl compound with an active hydrogen-containing organic compound such as an alcohol (e.g., an aliphatic monoalcohol, aliphatic polyalcohol, or a phenolic compound), a primary amine, a secondary amine or a thiol.