In a medium bowl combine the garlic, prunes, olives, capers, olive oil, vinegar, bay leaves, oregano, salt and pepper. Mix well. Spread mixture in the bottom of a 10x15 inch baking dish. Add the chicken pieces, stir and turn to coat. Cover and refrigerate overnight.
When ready to prepare, preheat oven to 350 degrees F (175 degrees C). Remove dish from refrigerator. Sprinkle brown sugar on top and pour white wine all around chicken.
Bake in preheated oven for 1 hour, spooning juices over chicken several times as it is baking. Serve on a platter, pouring juices over the top, and garnish with fresh parsley.