Answer:
No, they're not the same.
The first sentence, "This is very interesting to me" is written in a way the performer of the action while the second sentence, "-I am very interested in it" is the receiver of the action.
From the first sentence, the words are constructed in such a way that the object of the sentence "to me" is receiving the action.
The second sentence, the subject of the sentence "I" is performing the action.
