Original: Berzelius was a prolific correspondent with such leading scientists as Mulder, Claude Louis Berthollet, Humphry Davy, Friedrich Wöhler and Eilhard Mitscherlich).
Simplified: He helped many leading scientists (such as Mulder, Claude Louis Berthollet, Humphry Davy, Friedrich Wöhler and Eilhard Mitscherlich), and many less-notable scientists.