Abstract: The present invention provides a pentacyclic triterpenoid glycoside compound, and a preparation method therefor and a use thereof. Specifically, the present invention provides a compound as shown in formula I. The definition of each group is described in the description. The compound can be used for preparing a medicament for treating metabolic diseases such as diabetes and viral diseases caused by influenza virus, coronavirus and the like.

Abstract: The present invention relates to the fields of pharmaceutical chemistry and pharmacotherapeutics, and in particular to a compound as represented by general formula I, a racemate, an R-isomer, an S-isomer and a pharmaceutically acceptable salt thereof and a mixture of same, a preparation method therefor, a pharmaceutical composition containing the compound and the use thereof as an SIP receptor agonist. The oxadiazole compound involved in the present invention can be used for treating SIP receptor agonist related diseases.

Abstract: A YTH N6-Methyladenosine RNA Binding Protein 1 (YTHDF1) attenuating agent, with a compound, and when bound to YTHDF1, the compound binds to amino acid residues 372-392, 479-494 and 526-535 of SEQ ID NO: 1. A modified antigen presenting cell (mAPC), with the mAPC being treated with a YTHDF1 attenuating agent. A composition, with a YTHDF1 attenuating agent, a mAPC treated with the YTHDF1 attenuating agent, and optionally a pharmaceutically acceptable carrier. A method for attenuating an activity of YTHDF1, by administering an effective amount of a YTHDF1 attenuating agent. A method for determining whether or not a candidate agent is a YTHDF1 attenuating agent, by contacting the candidate agent with a YTHDF1 mutant. A method for treating a disease, disorder or condition associated with an expression of an antigen in a subject in need thereof.

Abstract: The present invention relates to the fields of medicinal chemistry and pharmacotherapy, and specifically relates to the chemical compound of formula (I), and its racemate, R-isomer, S-isomer, pharmaceutically acceptable salt, and mixtures thereof, as well as its method for preparation, a pharmaceutical composition containing said chemical compound, and use as a lysine-specific demethylase 1 (LSD 1) inhibitor. The cyclopropylamine chemical compound to which the present invention relates may be used in the treatment of cancer.

Abstract: Disclosed is use of a thieno[3,2-d]pyrimidin-4-one compound represented by general formula (I). Definition of each substituent is as stated in the description and claims, and the compound is used for preparing medicines for treating and/or preventing liver fibrosis and related diseases or preparing a DPP-4 inhibitor, or is used as a DPP-4 inhibitor.

Abstract: Use of an aldehyde-based compound as represented by general formula I, a pharmaceutical composition, a pharmaceutical salt, an enantiomer, a diastereomer and a racemic compound thereof as a novel coronavirus 2019 (2019-nCov) 3CL protease inhibitor in preparation of a medicament for treating and/or preventing and relieving respiratory tract infections, pneumonia and other related diseases caused by the novel coronavirus infection 2019.

Abstract: A class of ketoamide-based compounds, in particular, a ketoarnide-based compound as represented by general formula A is provided. The ketoamide compound may be used as a 2019 novel coronavirus (2019-nCov) 3 CL protease inhibitor and/or human cathepsin L inhibitor, and/or may be used in the preparation of a medicament for treating and/or preventing and relieving respiratory tract infection, pneumonia and other related diseases caused by 2019 novel coronavirus infection. Pharmaceutical compositions of the class of compounds, pharmaceutical salts, enantiomeric forms, diastereoisomers and racemic compounds thereof in the preparation of a medicament for treating and/or preventing and relieving respiratory tract infections and other related diseases caused by the 2019 novel coronavirus infection are also provided.

Abstract: The present invention provides a crystalline form of an acetylcholinesterase inhibitor, a preparation method therefor and application thereof. Specifically, the crystalline form is crystalline form A, crystalline form B and crystalline form C of 2-((1-(2-fluorobenzyl)-4-fluoropiperidin-4-yl) methylene)-5, 6-dimethoxy-2, 3-dihydro-1-indanone. The crystalline form of the present invention does not contain water and solvent, has high stability and low hygroscopicity, is easy to process, and is very suitable for preparing drugs for preventing and/or treating neurodegenerative diseases.

Abstract: The present invention relates to use of an aminomethylenecyclohexane-1,3-dione compound, more particularly to use of a compound shown in the following formula (I) or a pharmaceutically acceptable salt thereof alone or in combination with other drug in preparing a drug for regulating or treating a disease related to autophagy, especially mammalian ATG8 homologous proteins.

Abstract: It is related to compounds used as autophagy modulators and a method for preparing and using the same, specifically providing a compound of general formula (I), or pharmaceutically acceptable salts thereof, which is a type of autophagy modulators, particularly mammalian ATG8 homologues modulators.

Abstract: A ketoamide compound and a preparation method, a pharmaceutical composition, and a use thereof. Specifically, the ketoamide compound shown in formula (A), a racemate, an enantiomer, or a diastereoisomer thereof, or any mixture of same, or a pharmaceutically active metabolite thereof, or a pharmaceutically acceptable salt, solvate, or prodrug thereof. The ketoamide compound can effectively inhibit coronavirus or Ebola virus, and thereby implement the prevention or treatment of diseases related to coronavirus or diseases related to Ebola virus.

Abstract: Provided are a class of fused-cyclic pyrazolone formamide compounds and a preparation method therefor, a pharmaceutical composition and the use thereof. Specifically, provided is a compound having the structure as shown in formula (I) (with each group defined in the description). The compound can be used as an AXL inhibitor in the preparation of a pharmaceutical composition for treating tumors.

Abstract: The present invention provides an isoindolone-imide ring-1,3-dione-2-ene compound, and a preparation method, a pharmaceutical composition and use thereof. Specifically, the present invention provides a compound of Formula (I) below or a pharmaceutically acceptable salt thereof, wherein Ar is an isoindolinone-imide group represented by Formula (II), L is absent or is a divalent, trivalent or tetravalent linking group, and X is a group represented by Formula (III). Definitions of the other groups are as described in the specification. The compound of Formula (I) is an autophagy modulators, particularly a mammalian ATG8 homolog modulator.

Abstract: Disclosed is a Glechoma longituba (Nakai) Kupr. extract, specifically compounds I and II, a preparation method for same, and a use thereof in preparing a medicament for blood glucose decease, blood lipids decrease, weight loss, and kidney disease treatment or a method for treatment of said diseases, and a composition containing the extract.

Abstract: The present invention relates to phenyl [a]indole[2,3-g]quinolizine compounds represented by formula (I), a preparation method therefor, a pharmaceutical composition, and applications thereof. Specific applications are applications in the preparation of drugs for treating diseases related to a proprotein convertase subtilisin Kexin-9 (PCSK9), comprising the applications in the preparation of drugs for treating hyperlipemia, hypercholesterolemia, hypertriglyceridemia, fatty liver deformation, atherosclerosis, obesity and other metabolic diseases.

Abstract: Disclosed are a novel tetrahydroisoquinoline compound, a method for preparing intermediates thereof, a pharmaceutical composition thereof and the use thereof. The tetrahydroisoquinoline compound of the present invention has a good inhibitory effect on phosphodiesterase (PDE4), and can be used in the prevention, treatment or auxiliary treatment of multiple diseases associated with the activity or expression of phosphodiesterase, especially PDE4-associated immune and inflammatory diseases, such as psoriasis and arthritis.

Abstract: Disclosed is use of a thieno[3,2-d]pyrimidin-4-one compound represented by general formula (I). Definition of each substituent is as stated in the description and claims, and the compound is used for preparing medicines for treating and/or preventing liver fibrosis and related diseases or preparing a DPP-4 inhibitor, or is used as a DPP-4 inhibitor.

Abstract: Disclosed is a method for synthesizing a novel chiral ligand, a metal chelate, a variety of non-natural amino acids, Maraviroc and a key intermediate thereof. In the invention, (R)-2-methyl proline is selected and used as a starting raw material, (S)-?3-amino acid is obtained by asymmetric resolution induced by using a nickel chelate, and Maraviroc is synthesized by using (S)-3-amino-3-phenylpropionic acid as a key intermediate with a high yield and the ee value reaching 98.2% or more. The method of the present invention has widely available materials, mild synthetic process conditions, is easy to control, and produces a product of a high optical purity.

Abstract: Provided is a fluorinated cyclopropylamine compound represented by formula I, a racemate thereof, an R-isomer thereof, an S-isomer thereof, a pharmaceutical salt thereof, and a mixture thereof. Also provided are pharmaceutical compositions containing the compound, a preparation method for the compound, and uses thereof as a lysine specific demethylase 1 (LSD1) inhibitor, and in the treatment of cancers.

Abstract: A fluorine-containing triazolopyridine represented by formula (I) and a racemate, R-stereoisomer, S-stereoisomer, pharmaceutically acceptable salt, or mixture thereof are described. The triazolopyridine can be used as a positive allosteric modulator of an mGluR2, and is highly selective in activating the mGluR2, exerting no activation or very limited activation of other homologous metabotropic glutamate receptor. The triazolopyridine can thus be used to prepare a product for treating an mGluR2-related disease, such as a central nervous system disease or neurological disease.