摘要:
The present invention provides a method of predicting a food-drug interaction in vivo, in the case of an orally administered drug interactive with digestive enzymes in the gastrointestinal tract, by measuring the activity of the drug to the digestive enzymes in vitro, which is based on the fact that the ingestion of foods causes the absorption of drug in vivo to decrease due to the above interaction between a drug and digestive enzymes. The present invention further provides methods of minimizing the change of absorption in vivo caused by the ingestion of foods by reducing the action of digestive enzymes, for example, introduction of prodrugs, modification of the chemical structure of drug, design of drug formulation, etc.
摘要:
The present invention relates to a new process for preparing diisopropyl {[1-(hydroxymethyl)-cyclopropyl]oxy}methylphosphonate (2), which is a key intermediate for synthesizing an antiviral (particularly, against hepatitis B virus) nucleoside analogue. The present invention also relates to new intermediates, and a process for preparing the antiviral nucleoside analogue from the compound (2) prepared according to the present invention.
摘要:
The present invention relates to a maleic acid salt of (2S)-N-{5-[amino(imino)methyl]-2-thienyl}methyl-1-{(2R)-2-[(carboxymethyl)amino]-3,3-diphenylpropanoyl}-2-pyrrolidinecarboxamide.
摘要:
The present invention relates to a new process for preparing diisopropyl {[1-(hydroxymethyl)-cyclopropyl]oxy}methylphosphonate (2), which is a key intermediate for synthesizing an antiviral (particularly, against hepatitis B virus) nucleoside analogue. The present invention also relates to new intermediates, and a process for preparing the antiviral nucleoside analogue from the compound (2) prepared according to the present invention.
摘要:
Disclosed is a process for preparing a compound of the following formula (2): including the steps of reacting a compound of the following formula (4): with trityl chloride to prepare trityloxy-acetic acid ethyl ester of the following formula (8): reacting the compound of formula (8) with ethyl magnesium halide to prepare 1-trityloxymethyl-cyclopropanol of the following formula (9): combining the 1-trityloxymethyl-cyclopropanol of formula (9) with diisopropylbromo-methylphosphonate in a solvent in the presence of a base to prepare (1-trityloxymethyl-cyclopropoxymethyl)-phosphonic acid diisopropyl ester of the following formula (10): as a solid form, and converting the trityl group of the compound of formula (10) into a hydroxyl group.
摘要:
The present invention provides a novel process for preparing a compound represented by the above formula 7, which is an important intermediate for an oral thrombin inhibitor, by one-pot reaction. In accordance with the present invention, the above intermediate for the thrombin inhibitor may be obtained in a high yield.
摘要:
The present invention relates to crystalline forms of (2S)-N-5-[amino(imino)methyl]-2-thienyl-methyl-1-(2R)-2-[(carboxymethyl)amino]-3,3-diphenylpropanoyl-2-pyrrolidinecarboxamide nH2O.