Abstract: The present application relates to a method for preparing Ibutinib as shown by the following synthetic route and the intermediate compounds involved therein.

Abstract: The present application falls within the field of drug synthesis, and in particular, the present application relates to a method for preparing ruxolitinib, and a method for preparing the intermediate and relevant intermediates used. The method comprises reacting a compound of formula II with a compound of formula IV or a salt thereof to obtain a compound of formula III, and then subjecting the compound of formula III to an acyl halogenation reaction, an amidation reaction, and a reaction dehydrating an amide to form a cyano group or removing the protecting group to prepare ruxolitinib. The method has the characteristics of brief steps, a high stereoselectivity, a high utilization ratio of atoms, mild reaction conditions and convenient post treatment. The method avoids using expensive asymmetric reaction catalysts, and is suitable for industrial production.

Abstract: The present invention relates to the field of medicinal technology, and in particular, to sorafenib hemi-p-tosylate monohydrate crystal and preparation process thereof. The crystal has diffraction peaks occurring at 2? angle of about 5.62, 6.67, 8.05, 9.06, 9.63, 9.91, 10.95, 11.25, 13.48, 14.00, 14.60, 15.08, 15.75, 16.20, 16.62, 16.80, 17.23, 18.40, 18.97, 19.32, 19.82, 20.49, 20.74, 21.51, 22.56, 22.86, 23.37, 23.71, 24.20, 24.71, 24.97, 25.54, 25.80, 26.18, 27.14, 27.48, and 28.29 degree in a X-ray powder diffraction pattern, and some advantages, such as a high stability, a low hygroscopicity and the like.

Abstract: The present application relates to a substituted amino six-membered saturated heteroalicycle represented by formula I as a long-acting DPP-IV inhibitor, a method for preparing the same, a pharmaceutical composition comprising the same, and a use of the same in treating and/or preventing diseases and disorders benefitting from DPP-IV inhibition.

Abstract: The present application relates to a substituted amino six-membered saturated heteroalicycle represented by formula I as a long-acting DPP-IV inhibitor, a method for preparing the same, a pharmaceutical composition comprising the same, and a use of the same in treating and/or preventing diseases and disorders benefitting from DPP-IV inhibition.

Abstract: The present application relates to a method for preparing Ibutinib as shown by the following synthetic route and the intermediate compounds involved therein.

Abstract: The present invention relates to a crystalline form of tenofovir dipivoxil fumarate, a crystalline composition and a pharmaceutical composition comprising the crystalline form, and also to a process for preparing the same and the use for prophylaxis or treatment of a disease associated with a viral infection. The crystalline form has an X-ray powder diffraction pattern using Cu-K? radiation, expressed in terms of lattice spacing “d” comprising peaks at about 18.4714 ?, 5.0350 ?, 4.6380 ?, 4.5347 ?, 4.3838 ?, 4.2874 ? and 3.6304 ?.

Abstract: A compound represented by formula II, a preparation method, and uses thereof in treating liver damage and inflammation and so on are disclosed. A method for preparing glycyrrhetinic acid derivatives are also disclosed. In the compound represented by formula II, R1 is H, linear or branched C1-C18 alkylformyl, linear or branched C1-C18 alkenylformyl or arylacyl; R2 is linear or branched C1-C18 alkoxy or aryloxy.