Sweet taste modulators

The present invention includes compounds having the structural formula (I), or a pharmaceutically acceptable salt, solvate, and / or ester. These compounds are useful as a sweetening modifier. The present invention also provides compositions comprising the present compounds, and also includes a method of enhancing the sweetness of the ingestible composition. Furthermore, the present invention provides a process for preparing the compound. In another embodiment, the present invention provides a compound of the present invention and includes an excipient that is acceptable for ingestion, provides ingestible compositions. .BACKGROUND