The present invention discloses a new 11-oxo-7,11-dihydro-6H-benzyl [f] pyridin [1,2‑d] [1,4] azaxazolate as a hepatitis B surface antigen inhibitor ‑10‑Carboxylic acid derivatives, which specifically disclose compounds represented by formula (V) or pharmaceutically acceptable salts thereof, as well as compounds represented by formula (V) or pharmaceutically acceptable salts thereof and pharmaceutical compositions Application of hepatitis B virus.本發明公開了新的作爲乙肝表面抗原抑制劑的11‑氧代‑7,11‑二氫‑6H‑苯幷[f]吡啶幷[1,2‑d][1,4]氮氧雜卓‑10‑羧酸衍生物，具體公開了式(V)所示化合物或其藥學上可接受的鹽，以及式(V)所示化合物或其藥學上可接受的鹽和藥用組合物在治療乙型病毒性肝炎中的應用。
