Evaluation the Safety and Tolerance of GP681 Tablets in Healthy Subjects

The GP681 in this test is a prodrug of a polymerase acidic protein (PA, Polymerase Acidic protein) inhibitor. Its metabolite GP1707D07 can selectively inhibit the cap-dependent endonuclease of influenza virus and prevent influenza virus replication. Mechanism of action against influenza virus. The results of previous non-clinical studies show that GP681 can effectively inhibit influenza virus replication, has good safety, and has antiviral activity 1,000 times that of oseltamivir phosphate. It also has good antiviral activity against oseltamivir resistant strains. And it is expected to have a longer half-life than oseltamivir phosphate. Therefore, it is expected that a new type of PA inhibitor can be developed to provide patients with influenza with a new mechanism of action, better efficacy, and higher compliance.

Inclusion criteria

• 18-45 years old, male or female (the food impact test is limited to males); male ≥50 kg, female ≥45kg,BMI19-26; Fully understand the purpose and requirements of this trial, voluntarily participate in the clinical trial and sign a written informed consent form, and be able to complete the entire trial process according to the trial requirements.

Exclusion criteria

• history of allergies, allergic diseases or allergies to drugs in research; medical history of the central nervous system, cardiovascular system, digestive system, respiratory system, urinary system, blood system, metabolic disorders, etc. or other diseases that are not suitable for participating in clinical trials (such as mental illness history, etc.); donated blood or blood loss ≥ 400 mL within 3 months before enrollment;