The present invention relates to methods and intermediates for the preparation of omacetaxine and cephalotaxine derivatives thereof. The resulting products are useful in the treatment of proliferative diseases and infectious diseases.

The invention relates to novel process for preparation of Tavaborole. The invention also relates to novel polymorphic forms of Tavaborole and process for preparation of those polymorphic forms. The invention also relates to process for purification of Tavaborole to obtain the Tavaborole in significantly high yield and substantially pure form.

The present invention relates to a pseudo-ceramide compound and a preparation method therefor. According to the present invention, the pseudo-ceramide compound has a molecular structure and a function similar to those of a natural ceramide, can be readily synthesized, and has excellent solubility in an organic solvent and excellent stability, and thus the pseudo-ceramide compound can be used as an alternative to a natural ceramide. Therefore, the pseudo-ceramide compound of the present invention can be widely applied to a skin preparation for external use, a cosmetic composition, and the like for reinforcing and maintaining a skin barrier function.

The present invention relates to a pseudo-ceramide compound and a preparation method therefor. According to the present invention, the pseudo-ceramide compound has a molecular structure and a function similar to those of a natural ceramide, can be readily synthesized, and has excellent solubility in an organic solvent and excellent stability, and thus the pseudo-ceramide compound can be used as an alternative to a natural ceramide. Therefore, the pseudo-ceramide compound of the present invention can be widely applied to a skin preparation for external use, a cosmetic composition, and the like for reinforcing and maintaining a skin barrier function.

The present invention relates to a process for the preparation of amorphous dapagliflozin. The present invention relates to 2,3-butanediol solvate of dapagliflozin and process for its preparation.

The present invention relates to a process for the preparation of amorphous dapagliflozin. The present invention relates to 2,3-butanediol solvate of dapagliflozin and process for its preparation.

The invention relates to improved method of synthesis for Treprostinil comprising condensation reaction of the carbonyl compound having allyl, alkyl, crotyl or MEM-protected phenolic hydroxyl group, compound (4) with a hydroxyl-protected alkynol (5) to give the condensation product, compound (6). Subjecting compound (6) to oxidation, reduction, hydroxyl protection and carbonylation, cyclization reactions gave the tricyclic derivative (10). Further reactions comprising reduction, hydrogenation and deprotection of the phenolic and side-chain hydroxyl groups, wherein the sequence and choice of reagents was governed by protecting groups, gave the triol intermediate, compound (14). Cyanoalkylation at phenolic hydroxyl functionality and further hydrolysis yielded the prostacyclin compound, Treprostinil (1) and its pharmaceutically acceptable salts, having desired purity.

Disclosed herein are synthesis methods for coelenterazine. Also disclosed are articles including the coelenterazine and coelenterazine derivatives. Representative absorbent articles include disposable diapers and adult incontinence products.

The present invention relates to an improved method for producing a diphenylmethane derivative which is effective as a sodium-dependent glucose cotransporter (SGLT) inhibitor, the method being carried out by means of a convergent synthesis method in which each major group is separately synthesized and then coupled. As such, in comparison to a linear synthesis method disclosed in existing documents, the synthesis pathway is compact and yield can be increased, and risk factors inherent in the linear synthesis pathway can be reduced. Furthermore, the crystal form of the compound produced according to the method has superb physicochemical characteristics, and thus can be effectively utilized in fields such as pharmaceutical manufacturing.

Disclosed herein are synthesis methods for coelenterazine. Also disclosed are articles including the coelenterazine and coelenterazine derivatives. Representative absorbent articles include disposable diapers and adult incontinence products.