Disclosed are a fluorine-silicon-containing polyphosphate ester and method for preparation thereof, having a chemical structural formula of: ##STR00001##
wherein R.sub.1 is ##STR00002##
R.sub.2 is ##STR00003##
n=10˜100. The fluorine-silicon-containing polyphosphate ester of the present invention uses silicon phosphorus and fluorine for improving flame retardancy. Phosphorus catalyzes the system to form a phosphorus-rich carbon layer, performing a protective-layer function and thereby preventing further breakdown of the epoxy resin. The silicon-containing epoxy resin forms a silica-containing carbon layer during the process of combustion, strengthening the carbon-layer structure and further improving the protective function of the carbon-layer. The introduction of elemental fluorine improves the thermal stability of the epoxy resin, thereby improving the flame retardancy performance of the system.

Provided herein is a use of a high-boiling solvent in a mixture comprising a (thio)phosphoric acid derivative and a process including the addition of a high-boiling solvent to a mixture comprising a (thio)phosphoric acid derivative to recover the (thio)phosphoric acid from the mixture by an evaporation process.

The disclosure provides compounds having formula (I): ##STR00001##
and the pharmaceutically acceptable salts thereof, wherein R.sub.1, R.sub.2, R.sub.2, and X are as defined as set forth in the specification. Compounds having formula (I) are prodrugs that release glutamine analogs, e.g., 6-diazo-5-oxo-L-norleucine (DON). The disclosure also provides compounds having formula (I) for use in treating cancer.

The purpose of the present invention is to provide a method for purifying and preparing a highly liposoluble phosphoramidite, as well as a capping reaction using the highly liposoluble phosphoramidite compound, and as well as a method for preparing oligonucleotide by a liquid phase process using a pseudo solid phase protecting group said method comprising the capping reaction step. The present invention also provides a method for preparing a compound represented by formula (I) [wherein, R.sup.1, R.sup.2 and R.sup.3 are defined as described in the Detailed Description], which comprises the following steps: (1) reacting an aliphatic alcohol and a trivalent phosphorus compound in organic solvent in the presence of an activator or an organic base; (2) washing the resulting reaction mixture with water in a reparatory funnel; (3) recovering the organic layer after the step (2) and concentrating it (with the proviso that the organic solvent used in the step (1) is a nitrile solvent, the steps (2) to (3) may be omitted); (4) solubilizing the resulting residue obtained in the step (3) in an aliphatic hydrocarbon solvent (with the proviso that the organic solvent used in the step (1) is an aliphatic hydrocarbon solvent, the steps (2) to (3) may be omitted); (5) washing the aliphatic hydrocarbon solution prepared in the step (4) with a nitrile solvent in a separatory funnel; (6) recovering the aliphatic hydrocarbon solution after the step (5) to obtain a solution of a phosphoramidite compound. Also the present invention provides also a solution containing highly liposoluble phosphoramidite compound obtained by the preparation method, a capping reagent comprising the same solution and optionally an additive, a capping reaction using the same capping reagent, as well as a method for preparing (oligo)nucleotide by using the pseudo solid phase protecting group, said method comprising the capping reaction step.

##STR00001##

A flame-retardant sugar derivative, a process for forming a flame-retardant sugar derivative, and an article of manufacture comprising a flame-retardant sugar derivative are disclosed. The flame-retardant sugar derivative can be synthesized from sorbitol, gluconic acid, or glucaric acid obtained from a bio-based source, and can have at least one phosphoryl or phosphonyl moiety. The process for forming the flame-retardant sugar derivative can include reacting sorbitol, gluconic acid, or glucaric acid and a flame-retardant phosphorus-based molecule to form the flame-retardant sugar derivative.

The present invention is directed to new 5-ALA derivatives, particles and formulation thereof, related methods of preparation and methods of use thereof. In particular, the invention relates to compounds of the invention, particles and formulation thereof useful in the treatment of a cancer and/or the diagnosis of a cancer cell such as in photodynamic therapy or photodynamic diagnosis.

The present invention provides prodrug modifications for chemotherapeutic drugs that allow activation in the cytosol.

Described herein are compounds, pharmaceutical compositions and medicaments that include such compounds, and methods of using such compounds to modulate transient receptor potential vanilloid 1 receptor (TRPV1) activity.

Novel non-nucleoside solid supports and phosphoramidite building blocks for preparation of synthetic oligonucleotides containing at least one non-nucleosidic moiety conjugated to a ligand of practical interest and synthetic processes for making the same are disclosed. Furthermore, oligomeric compounds are prepared using said solid supports and phosphoramidite building blocks, preferably followed by removal of protecting groups to provide oligonucleotides conjugated to ligands of interest.

This document relates to functionalized (e.g., mono- or bi-functional) polymers (e.g., polyethylene glycol and related polymers) as well as methods and materials for making and using such functionalized polymers.