Preheat oven to 400°.
Drain oranges and reserve the liquid. Cut oranges in half and place in a measuring cup. Add orange extract and reserved liquid to make 8 ounces. Set aside.
Combine flour, baking powder, soda, salt and sugar in large bowl. In a separate bowl combine the egg, sour cream, orange mixture, and melted butter.
Make a well in the dry ingredients. Add the orange mixture and pecans. Stir to blend. Spoon into greased muffin tins. Bake for 20-25 minutes.