Abstract: The present invention relates to processes for preparing a dihydropyrimidine derivative having Formula (I) or a tautomer thereof having Formula (Ia), as well as a intermediate thereof. The processes of the invention have simple operation, high optical purity of product, high yield and convenient work-up, which is suitable for industrial production.

Abstract: The present invention relates to crystalline forms of dihydropyrimidine derivatives, and pharmaceutical compositions comprising the crystalline forms disclosed herein, which may be used for preventing, managing, treating or lessening the severity of a viral disease in a patient, especially hepatitis B infection or a disease caused by hepatitis B infection.

Abstract: Provided herein are dihydropyrimidine compounds and their pharmaceutical applications, especially for use in treating and preventing HBV diseases. Specifically, provided herein are compounds having Formula (I) or (Ia), or an enantiomer, a diastereoisomer, a tautomer, a hydrate, a solvate, or a pharmaceutically acceptable salt thereof, wherein the variables of the formulas are as defined in the specification. Also provided herein is the use of the compounds having Formula (I) or (Ia), or an enantiomer, a diastereoisomer, a tautomer, a hydrate, a solvate, or a pharmaceutically acceptable salt thereof for treating and preventing HBV diseases.

Abstract: Provided herein are dihydropyrimidine compounds and their pharmaceutical applications, especially for use in treating and preventing HBV diseases. Specifically, provided herein are compounds having Formula (I) or (Ia), or an enantiomer, a diastereoisomer, a tautomer, a hydrate, a solvate, or a pharmaceutically acceptable salt thereof, wherein the variables of the formulas are as defined in the specification. Also provided herein is the use of the compounds having Formula (I) or (Ia), or an enantiomer, a diastereoisomer, a tautomer, a hydrate, a solvate, or a pharmaceutically acceptable salt thereof for treating and preventing HBV diseases.

Abstract: The present invention relates to crystalline forms of dihydropyrimidine derivatives, and pharmaceutical compositions comprising the crystalline forms disclosed herein, which may be used for preventing, managing, treating or lessening the severity of a viral disease in a patient, especially hepatitis B infection or a disease caused by hepatitis B infection.

Abstract: Provided herein are dihydropyrimidine compounds and their pharmaceutical applications, especially for use in treating and preventing HBV diseases. Specifically, provided herein are compounds having Formula (I) or (Ia), or an enantiomer, a diastereoisomer, a tautomer, a hydrate, a solvate, or a pharmaceutically acceptable salt thereof, wherein the variables of the formulas are as defined in the specification. Also provided herein is the use of the compounds having Formula (I) or (Ia), or an enantiomer, a diastereoisomer, a tautomer, a hydrate, a solvate, or a pharmaceutically acceptable salt thereof for treating and preventing HBV diseases.