Peel zest in long strips from half of orange with a vegetable peeler and trim any white pith from zest.
Cut zest into fine julienne strips. Halve orange and squeeze 1/3 cup juice.
Combine zest, juice, wine, sugar, and 2 cups water in a 3-quart heavy saucepan. Scrape seeds from vanilla bean with a sharp knife into wine mixture, reserving pod for another use. Bring mixture to a boil, stirring until sugar is dissolved, then continue to boil, uncovered, until reducedto about 3 cups, about 10 minutes.
While syrup is boiling, cut off and discard fig stems and halve figs lengthwise.
Add figs to syrup and simmer, covered, until they soften, about 5 minutes.
Add apricots and prunes, then simmer, covered, until plump, 8 to 10 minutes.
Transfer compote to a heatproof bowl and cool to warm or room temperature, 1 to 2 hours.
• Compote can be made 1 day ahead and chilled, covered. Reheat over moderately low heat.
Each serving with 2 tablespoons low-fat sour cream contains about 429 calories and 4 grams fat (without sour cream: 384 calories and 1 gram fat).