Bring a large pot of salted water to a boil for pasta. Meanwhile, sauté shallot and garlic in oil in another large pot over medium-high heat until softened, 3 minutes. Add 1/2 cup wine and cook 1 minute. Stir in chile flakes and tomatoes; cook 1 to 2 minutes.
Boil pasta 5 to 6 minutes, or until halfway done. Meanwhile, add clams to garlic mixture, increase heat to high, and cook, covered, 5 minutes.
Scoop out 3/4 cup pasta water and reserve. Drain pasta and add to pan with clams. Cook together, covered, stirring occasionally, until pasta is al dente and clams have opened, 5 to 6 minutes. Add some pasta water or more wine if you want a juicier sauce. Discard any unopened clams. Toss pasta and clams with parsley.
Note: Nutritional analysis is per serving.