Pentacyclic triterpene compounds are provided herein. Also provided are pharmaceutical formulations containing a therapeutically effective amount of one or more of the compounds, or pharmaceutically acceptable salts or prodrugs thereof, in combination with one or more pharmaceutically acceptable excipients. The pharmaceutical formulations can be administered to a pre-obese, obese, or morbidly obese patient to induce weight loss, reduce body fat, reduce food intake, improve glucose homeostasis, prevent obesity, or a combination thereof. The compounds can also be co-administered with leptin or a leptin analog.