Abstract: Provided is a method and an apparatus for displaying a live broadcast room, a device, and a storage medium. The method includes: acquiring a live broadcast screenshot of at least one live broadcast room under a target classification label; inputting the live broadcast screenshot of the at least one live broadcast room into an image detection model to obtain a live broadcast screenshot that satisfies a set type condition; adding a display identifier to a live broadcast room corresponding to the live broadcast screenshot of the set type condition; and arranging and displaying the at least one live broadcast room according to the display identifier in a display interface corresponding to the target classification label.

Abstract: Provided is a method and an apparatus for displaying a live broadcast room, a device, and a storage medium. The method includes: acquiring a live broadcast screenshot of at least one live broadcast room under a target classification label; inputting the live broadcast screenshot of the at least one live broadcast room into an image detection model to obtain a live broadcast screenshot that satisfies a set type condition; adding a display identifier to a live broadcast room corresponding to the live broadcast screenshot of the set type condition; and arranging and displaying the at least one live broadcast room according to the display identifier in a display interface corresponding to the target classification label.

Abstract: The present invention relates to a disaccharide intermediate and a synthesis method thereof, relates to the chemical pharmaceutical field, and more specifically relates to a method for preparing a disaccharide segment of a key intermediate for chemically synthesizing heparin and heparinoid compounds. Disclosed are a new disaccharide intermediate and three methods for synthesizing the disaccharide intermediate, that is, compounds of a formula (4) and glucopyranose protected by different anomeric carbon are made to react in the presence of an active agent, to obtain the disaccharide intermediate. According to the technical solutions of the present invention, synthetic raw materials are easy to obtain, have a mild reaction condition, and are suitable for industrialized production.

Abstract: A molecule with neural activities, especially 4-substituent-2-hydroxymorpholin-3-one, as a new intermediate of neurokinin-1 receptor antagonist aprepitant, and preparation method thereof.

Abstract: The present invention relates to a disaccharide intermediate and a synthesis method thereof, relates to the chemical pharmaceutical field, and more specifically relates to a method for preparing a disaccharide segment of a key intermediate for chemically synthesizing heparin and heparinoid compounds. Disclosed are a new disaccharide intermediate and three methods for synthesizing the disaccharide intermediate, that is, compounds of a formula (4) and glucopyranose protected by different anomeric carbon are made to react in the presence of an active agent, to obtain the disaccharide intermediate. According to the technical solutions of the present invention, synthetic raw materials are easy to obtain, have a mild reaction condition, and are suitable for industrialized production.

Abstract: Disclosed is a new method for preparing a methyl substitute of a linezolid intermediate, (S)-2-(3-(3-fluoro-4-morpholinophenyl)-2-oxo-5-oxazoline) (I), wherein the intermediate (I) is obtained by the cyclization of 3-fluoro-4-morpholinophenyl isocyanate (II) and epoxy compound (III). This process has a short process route, low cost, easy operation, and high yield, so is suitable for a large-scale industrial production.

Abstract: A molecule with neural activities, especially 4-substituent-2-hydroxymorpholin-3-one, as a new intermediate of neurokinin-1 receptor antagonist aprepitant, and preparation method thereof.

Abstract: Disclosed is a new method for preparing a methyl substitute of a linezolid intermediate, (S)-2-(3-(3-fluoro-4-morpholinophenyl)-2-oxo-5-oxazoline) (I), wherein the intermediate (I) is obtained by the cyclization of 3-fluoro-4-morpholinophenyl isocyanate (II) and epoxy compound (III). This process has a short process route, low cost, easy operation, and high yield, so is suitable for a large-scale industrial production.