Medicine for treating infection caused by gram-positive bacteria and synthetic method of medicine

The invention discloses a medicine for treating the infection caused by gram-positive bacteria and a synthetic method of the medicine. A chemical structural formula of the medicine is as shown in formula (I). The formula (I) can be used as the medicine for treating the infection caused by the gram-positive bacteria, and particularly used as the medicine for treating the infection caused by MRSA (Methicillin-resistant Staphylococcus aureus). By adopting the medicine, the gram-positive bacteria medicine treatment compound library is enriched, and a positive effect for treating the infection caused by the gram-positive bacteria is realized. (The formula is shown in the description).