was there any attempt to make sequels of it?
An attempt was made but  had been canceled.
Spider-Man 3
ony Pictures announced in January 2010 that plans for "Spider-Man 4" had been canceled due to Raimi's withdrawal from the project. 
who plays edward brock jr in spiderman 3 UNANSWERABLE when did the film come out? April 16, 2007 what is it's storyline? Set shortly after the events of "Spider-Man 2", as Peter Parker prepares for his future with Mary Jane Watson, he faces three more villains: Uncle Ben's true killer, Harry Osborn, and Eddie Brock. who played the title character in it? Tobey Maguire where was it filmed? Los Angeles who all were the other actors in it? Kirsten Dunst, James Franco, Thomas Haden Church, Topher Grace, Bryce Dallas Howard, James Cromwell was the movie a hit commercially? Worldwide, it is the third-highest-grossing film of 2007 was it nominated for any awards? Both the 35th Annie Awards and 61st British Academy Film Awards gave this movie one nomination, the former for Best Animated Effects and the latter for Best Special Visual Effects. did it win any? No,  "Spider-Man 3" did not win any of the four Visual Effects Society Awards nominations it received.
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Spider-Man 3 [SEP] Cancelled sequels
According to sources online, an early draft of the film would have had the Vulture buying out the "Daily Bugle", forcing Spider-Man to kill him. Felicia Hardy, Vulture's daughter in this version of the script, would have had an affair with Peter Parker in order to shatter his engagement with Mary Jane. These rumors were never confirmed. Raimi stated years later during an interview in 2013, however, that Hathaway was going to be Black Cat if "Spider-Man 4" had been made. Sony Pictures announced in January 2010 that plans for "Spider-Man 4" had been canceled due to Raimi's withdrawal from the project.