From left: William Rudin and 110 Wall Street Rudin Management, which was reportedly eyeing a residential conversion for its Superstorm Sandy-damaged office building at 110 Wall Street, purchased nearly 36,000 square feet of development rights from a neighboring FiDi hotel earlier this month. William Rudin’s firm paid $7.76 million – or about $217 per square foot – to acquire 35,815 square feet of development rights from the Eurostar Hotel at 129 Front Street, property records show. Niether Rudin management nor Eurostar’s parent company, the Barcelona-based hospitality giant Hotusa Group, could be immediately reached for comment. After the deal was done, the eight-story, 53-room …